Electricity: motive power systems inventions 12/08

20080315802 - Elevator control device: An elevator control device that drives a cage in a high-efficient speed pattern without using a load detector such as a conventional scale device. The elevator control device includes: a current detector for detecting a current that is supplied to a motor from an inverter; a speed detector for detecting... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080315803 - Hybrid electric vehicle: A hybrid electric vehicle includes, in one example, a motor-generator driven by an engine to generate alternating current, wherein the motor-generator is further configured to start the engine, a motor for driving the vehicle, a diode rectifier to rectify alternating current generated by the motor-generator, an inverter connected to a... Agent: Alleman Hall Mccoy Russell & Tuttle LLP

20080315804 - Load drive control circuit: A load drive control circuit for controlling a load that includes connection terminals. The load drive control circuit includes bridge circuits respectively connected to the connection terminals of the load. Each bridge circuit includes two semiconductor elements, which are connected between a power supply and ground, and an output terminal.... Agent: Patterson, Thuente, Skaar & Christensen, P.A.

20080315805 - Chopper circuit topologies for adapting an electrical braking system in a traction vehicle: An adaptable electrical braking system for an electrical propulsion system of a traction vehicle is provided. The electrical braking system is configured to dissipate electrical energy in a plurality of resistor grids. The braking system includes a braking system assembly including a baseline chopper circuit topology. The baseline chopper circuit... Agent: Beusse Wolter Sanks Mora & Maire, P.A.

20080315806 - Kit and method for reconfiguring an electrical braking system for a traction vehicle: A kit and method for reconfiguring an electrical braking system for a traction vehicle are provided. The kit may include a braking system assembly including a chopper having a first chopper circuit topology. The first chopper circuit topology includes a first semiconductor-based circuitry having a footprint that defines at least... Agent: Beusse Wolter Sanks Mora & Maire, P.A.

20080315807 - Method for operating an electronically commutated motor, and motor for carrying out a method such as this: An electronically commutated motor (ECM 20) has terminals (56, 62) for connection to a DC power source (63). It has a permanent-magnet rotor (22), also a first and a second series circuit (40, 50) in each of which a stator winding strand (30, 32) is connected in series with a... Agent: Ware Fressola Van Der Sluys & Adolphson, LLP

20080315808 - Motor drive device with lock protection function: A cooling system is provided with a motor drive device, a fan motor, and a Hall element. The motor drive device includes a lock protection circuit and a lock controller. When a control signal instructing rotation of the fan motor that is to be driven instructs stoppage of the motor... Agent: Cantor Colburn, LLP

20080315810 - Motor control apparatus and motor control method: The motor control apparatus includes a memory that stores a correction data group for suppressing a fluctuation of an output of a motor, and a calculating unit that generates, by using a correction value calculated on the basis of a first output command value input thereto and the correction data... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20080315809 - Motor controller and electric power steering apparatus: The micro computer 17 continue an output of a motor control signal to execute a current control to carry to each of two phases a phase current changing like a secant curve or a cosecant curve at making a predetermined rotational angle according to the phase generated the current-carrying failure... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080315811 - System and method for collecting characteristic information of a motor, neural network and method for estimating regions of motor operation from information characterizing the motor, and system and method for controlling motor: A method for collecting operational parameters of a motor may include controlling the energization of a phase winding of the motor to establish an operating point, monitoring operational parameters of the motor that characterize a relationship between the energization control applied to the motor's phase winding and the motor's response... Agent: Dickinson Wright PLLC James E. Ledbetter, Esq.

20080315812 - Method and device for starting an electric machine with a magnetically mounted rotor: A method and a device with a control apparatus (50) for starting an electric machine (10) with a rotor (20), particularly the spinning cup of an open-end spinning machine, magnetically mounted by a bearing having permanent magnets (31, 32, 33, 34). An actuator system controls the position in the axial... Agent: Karl S. Sawyer, Jr. Kennedy Covington Lobdell & Hickman, L.L.P.

20080315813 - Control apparatus for motor: A normal revolution number calculation unit calculates a normal revolution number of a driving motor generator in every control period, based on a signal from a rotational position sensor. A moving average calculation unit calculates a moving average revolution number of the normal revolution number given in every control period.... Agent: Oliff & Berridge, PLC

20080315814 - Motor control device, motored vehicle equipped therewith, and method of controlling a motor: When a motor temperature exceeds a threshold value, a torque control unit reduces a torque control value for a motor generator. A torque limitation control unit determines from torque control value and vehicular speed whether limiting a torque by the torque control unit should be alleviated, and if so the... Agent: Kenyon & Kenyon LLP

20080315815 - Control device and control method: A control device for controlling a recovery from a locking of a motor includes: a switching unit which supplies a motor current from a current supplying unit to the motor; and a driving control unit which supplies a PWM control signal to the switching unit to control a driving of... Agent: Sughrue-265550

20080315816 - Motor control device and compressor: A motor control device performing vector control for a motor that drives a load whose load torque varies periodically. The motor control device has: a motor speed deriving portion estimating or detecting a motor speed; a speed controller producing a specified torque current value such that the motor speed is... Agent: Ndq&m Watchstone LLP

20080315817 - Control system for a hybrid electric vehicle and a method for controlling a hybrid electric vehicle: A control system and method for a hybrid electric vehicle. One example control system includes a current calculating module to calculate a current, the current being at least one of a current to drive a motor of the vehicle and a current generated by the motor, and a feed controller... Agent: Alleman Hall Mccoy Russell & Tuttle LLP

20080315818 - Axial gap type motor/generator: An axial gap type motor/generator is provided with a stator, a rotor and an alternating current control device. The alternating current control device executes alternating current control of a single phase or multiple phase alternating current flowing in the coils. The alternating current control device includes a superpositioning control section... Agent: GlobalIPCounselors, LLP

20080315819 - Parallel multiplex matrix converter: The parallel multiplex matrix converter couples in parallel at least two matrix converters, each of which PWM-controls bidirectional switches coupling input phases from an AC power supply to each output phases so as to output an arbitrary AC voltage or DC voltage. The output sides of the matrix converters are... Agent: Sughrue Mion, PLLC

20080315820 - Industrial robot: An industrial robot having: an arm, a wrist element rotatably interconnected to the arm, a work tool mounted on a distal end of the wrist element, and a motor mounted on the wrist element; wherein an umbilical-member connected to the work tool and a flat cable connected to the motor... Agent: Lowe Hauptman Ham & Berner, LLP

20080315821 - Device for finding a home position for a moveable member: A device for finding a home position of a moveable member includes a magnet mounted on the moveable member and two switch-type Hall effect detectors, one on each side of the home position and equally spaced from the home position. The device includes a device for measuring movement of the... Agent: Robert L. Marsh

20080315822 - Rotor position detection at standstill and low speeds using a low power permanent magnet machine: For a multiphase alternating current (AC) wound field synchronous machine (WFSM) that has a stator with a selected number of poles, the WFSM having an associated exciter and multiphase AC permanent magnet machine (PMM) directly coupled to the WFSM, a method of sensing the position of a rotor in the... Agent: Stephen George Mican

20080315823 - Control and power device for a rotating electrical machine: A control and power device for a rotating electrical machine comprising a management circuit and a power circuit including a number of power transistors and driver circuits associated with the power transistors. The invention is characterized in that it comprises connection means between the management circuit and the driver circuits... Agent: Matthew R. Jenkins, Esq.

20080315824 - Induction motor drive unit, motor drive system, and elevating system: A slip frequency is estimated from a current instruction or detected currents in an induction motor. Acceleration impossibility in an induction motor drive unit is determined, when the slip frequency exceeds the maximum torque generating slip frequency for the predetermined interval or the time integrating result exceeds a predetermined value;... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080309260 - Shaft type linear motor, mounting head and component mounting device with the linear motor, and position detection method for shaft for driving the linear motor: A shaft type linear motor including a stator in which plural hollow cylindrical coils are disposed so that the center through holes thereof are arranged linearly so as to form a shaft insertion hole; a driving shaft including permanent magnets, the same magnetic poles, the north or south magnetic poles,... Agent: Wenderoth, Lind & Ponack L.L.P.

20080309261 - Electric drive fuel control system and method: An electric drive fuel control system and method for controlling a total drive torque supplied to a fuel metering pump includes a first main drive motor, a second main drive motor, and a backup drive motor, all coupled to the fuel metering pump. The operability of a main motor control... Agent: Honeywell International Inc.

20080309262 - Multiple phase electric motor and drive: A multiple phase electric motor provided with multiple inverter power circuits is described herein. The capacity of the capacitor bank required for multiple phase motors operating from a DC power source is therefore decreased. This is done by forming groups of phases that are powered by a separate inverter power... Agent: Fay Kaplun & Marcin, LLP

20080309263 - Method and device for controlling power car window lift: The invention discloses a method for controlling a power car window lift. The method includes the following steps: detecting an operation state signal of the car window with a detection element; inputting the detection signal of the detection element into the controller; and the controller sending a control signal to... Agent: EagleIPLimited

20080309264 - Control apparatus for rotational electric machine and driving apparatus for vehicle: A control apparatus for controlling a rotational electric machine and a driving apparatus for a vehicle that include an AC motor that rotates wheels and is driven by a power supplied from a battery, an instant variation detecting unit provided in a motor controller that detects a instant variation of... Agent: Crowell & Moring LLP Intellectual Property Group

20080309266 - Device for controlling a rotating electrical machine: A device for determining the position of the rotor of a rotating electrical machine. The invention is characterized in that the device comprises a plurality of magnetic field sensors stationary relative to the stator and adapted to deliver multiphase electric signals representing a magnetic field detected by the sensors, and... Agent: Matthew R. Jenkins, Esq.

20080309265 - Motor control device: In a motor control device according to the invention, upon velocity control of a motor, a superimposed signal generating unit 9 outputs a superimposed signal idh of a repetitive waveform, such as a triangular wave or a sine wave. A d-axis current command generating unit 10 adds the superimposed signal... Agent: Sughrue Mion, PLLC

20080309267 - Method and apparatus for resolver compensation: A system and method for compensating a resolver are disclosed. Briefly described, one embodiment receives at least one output signal from the resolver, the resolver detecting a current position of a rotor coupled to the resolver; determines if the current position of the rotor is detected by a first pole-pair... Agent: Carlson, Gaskey & Olds, P.C.

20080309268 - Initial pole position estimating apparatus and method for ac synchronous motor: The present invention provides an initial pole position estimating apparatus and method for an AC synchronous motor without using magnetic pole detector. The initial pole position estimating apparatus includes a thrust force or torque pattern generating portion for generating a thrust force or torque pattern, a pole position command generating... Agent: Sughrue-265550

20080309269 - Microcontroller interface with hall element: A device controller system incorporates an inexpensive Hall element to detect motion of a brushless DC motor. A magnet, which is part of a motor rotor, passes by the Hall element producing a Hall voltage each rotation. The Hall voltage is coupled through an interface port to a comparator within... Agent: Schwegman, Lundberg & Woessner / Atmel

20080309270 - Motor controller and electric power steering apparatus: In a motor controller, in the case that occurrence of a failure of electric current flow is detected in any phase of a motor, a phase electric current command value changing in accordance with a secant curve or a cosecant curve with an asymptotic line at a predetermined rotation angle... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080309271 - Control and power module for a rotating electric machine: A control and power module for a rotating electric machine comprising a bridge of switches, a plurality of driver circuits for driving a bridge of switches, a control circuit and a plurality of communication connections between driver circuits and a control circuit. When the machine is in a rest mode,... Agent: Matthew R. Jenkins, Esq.

20080309272 - Motor controller and control method thereof: In the motor controller including a position control section (3) that generates a speed command based on a position command and a motor position, a speed control section (4) that generates a torque command based on the speed command and a motor speed, and a motor driving section (8) that... Agent: Sughrue-265550

20080309273 - Controller for controlling robot body with power-off brake: In a controller, a first switch unit establishes electrical connection between a power-off brake and a power source when a servomotor is energized. The electrical connection causes the power-off brake to be released. A second switch unit is provided between the power-off brake and the power source. The second switch... Agent: Oliff & Berridge, PLC

20080309274 - Dual mode stepper motor: A method and structure receives a desired rotational speed and/or step frequency for an electric motor. If the desired rotational speed is above a predetermined limit, the method performs closed-loop mode control of coil current of the electric motor by varying the average voltage supplied to the electric stepper motor... Agent: Gibb & Rahman, LLC

20080309275 - Dual swing gate control system: A control system and method for ensuring proper closure of a dual swing gate. The control system employs position sensors for monitoring the position of each gate arm. A “differential position” is maintained between the arms during closing to ensure proper sequencing. The control system regulates the speed of the... Agent: William H. Hollimon

20080309276 - Five axis compensated rotating stage: A rotating stage assembly performs high precision rotational angle and position error correction by continuous sensing and correcting motor stage assembly errors. It performs these corrections, to adjust for motor environmental and operational errors by sensing and correcting using five sensors placed to measure the adjustments of five corresponding actuators,... Agent: Houston Eliseeva

20080309277 - Driving system for mobile robot: In a system for driving a mobile robot having a body, a plurality of legs each comprising a thigh link and a shank link, a first electric motor and a second motor for driving the thigh link in a forwarding direction, a power line connecting a power source to the... Agent: Squire, Sanders & Dempsey L.L.P.

20080309278 - Method of designing a reluctance resolver: A method of designing a reluctance resolver, and the resolver comprises a stator and a rotor, and an exciting coil and two sets of outputting wires wind around the tooth portion of the stator. The designing method comprises the following steps: fixing relative position; calculating the turn ratio of the... Agent: Dr. Banger Shia

20080309279 - Motor controller: A motor controller includes: a notch filter arranged inside a control system; an oscillation frequency estimating section which estimates an oscillation frequency component in a motor; and a notch control section which controls a notch filter so as to change a notch frequency and a notch width. The notch control... Agent: Wenderoth, Lind & Ponack L.L.P.

20080309280 - Calibrating stepper motor by driving fractional ranges: A stepper motor driving a driven member is calibrated by periodically driving the member from its current operational position to an end stop of the driven member's total travel range; however, the driven member approaches the end stop in a series of ever-shorter travel segments. The first travel segment is... Agent: William O'driscoll - 12-1 Trane

20080309281 - Starting control apparatus and method for motor: An exciting coil of a motor is formed to be controlled by using an analog timer to thus control an excitation control circuit of a motor control apparatus, whereby an excitation control circuit that excites an exciting coil of a motor control apparatus can be simplified and complexity can be... Agent: Ked & Associates, LLP

20080309282 - Restart control of an a.c. motor drive: Method of and system for controlling the restart of an A.C. motor drive comprising an A.C. motor (4), a power converter (20, 21, 22) for stepless speed control of the A.C. motor and a load switch (3) arranged between the power converter and the A.C motor, wherein when the power... Agent: Birch Stewart Kolasch & Birch

20080303458 - Enhancement of the efficiency of energy recovery during spindle motor step-up phases for parking the r/w head of a disk storage device upon external supply failure: Energy recovery during recirculation phases of the phase windings of a multiphase spindle motor is increased when all the MOSFETs of the output bridge stage associated therewith are turned off (tristated) for charging a hold capacitor. This is accomplished by allowing the recirculation of the motor currents through the same... Agent: Allen, Dyer, Doppelt, Milbrath & Gilchrist P.A.

20080303459 - Generator control unit: In order to control the DC voltage of the DC voltage output terminal in a state where an electric load is connected to the DC voltage output terminal of a power generation unit, a PWM signal generation unit 429 generates a field voltage to be applied to a field winding... Agent: Crowell & Moring LLP Intellectual Property Group

20080303460 - Method and device for identifying pinching situations in displacing drives in motor vehicles: Disclosed is a method for identifying pinching situations in a motor-driven displacing device. During a displacing process along an actuating direction, values (W(n) to (W(n−m)) of a quantity (1), which characterizes the currently occurring displacing force, or a quantity derived therefrom are determined and stored, and a quantity (8) that... Agent: Craig Hallacher Continental Teves Inc.

20080303461 - Method and apparatus for detecting blocking of a direct current motor: Both a method and a use by this method of an apparatus for detecting blocking of a direct current motor (10), in particular a direct current motor (10) for a blower of a motor vehicle, is presented. The direct current motor (10) is deactivated by a computer unit (20) with... Agent: Michael J. Striker

20080303462 - Method for operation of a three-phase rotating electrical machine, and an apparatus for carrying out the method: A method and apparatus are provided for operation of a three-phase rotating electrical machine which has at least two stator winding sets and each stator winding set has three phase windings connected in star, and the star circuits of the stator winding sets have a phase shift of 30 degrees... Agent: Buchanan, Ingersoll & Rooney PC

20080303463 - Motor control: A washing machine and a method of operating same is disclosed. A electronically commutated motor for using in a washing machine is also disclosed. The washing machine has an agitator operated by an electronically commutated motor. An agitate cycle of the washing machine is detected. During an agitate cycle, the... Agent: Trexler, Bushnell, Giangiorgi, Blackstone & Marr, Ltd.

20080303464 - Brushless dc motor and electric apparatus mounting it: Current control circuit controls an output voltage of DC power supply so as to increase current passing through inverter circuit as the motor increases its the speed. The control offers an RPM—torque characteristic of the motor in which torque increases as the RPM increases. By virtue of the RPM—torque characteristic,... Agent: Ratnerprestia

20080303465 - Drive control system of an electric vehicle: The object of the present invention is to provide a drive control system of an electric vehicle that can prevent overshoot of the amount of slip. The drive control system of the electric vehicle includes: a motor to drive a driving wheel; a PDU; a number-of-revolution sensor that detects the... Agent: Arent Fox LLP

20080303466 - Fan system containing fan control apparatus and fan control method: A fan system includes a fan attached to a housing; and a DC motor configured to drive the fan. A fan control apparatus includes a control unit configured to control a rotation speed of the fan so as to periodically change around a specific rotation speed based on data corresponding... Agent: Nec Corporation Of America

20080303467 - Motor control device: A motor control device includes a sensing circuit, a phase-shifting circuit, a comparing circuit and a control circuit. The sensing circuit senses the motor to generate a sensing signal. The phase-shifting circuit is electrically connected to the sensing circuit and receives the sensing signal to generate a phase-shifting signal. The... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20080303468 - Correction method for microprocessor-controlled digital regulation: In a correction method for a microprocessor-controlled digital regulation of a drive motor, wherein the measurement arrangement used for the regulation of the motor is simplified. recognizing that the real value surveying cannot always be implemented periodically by the microprocessor at the requested point in time, making sporadic measurement errors... Agent: Schiff Hardin, LLP Patent Department

20080303469 - Variable frequency drive system apparatus and method for reduced ground leakage current and transistor protection: As applications of variable frequency drives (VFD) (50) continue to grow so do challenges to provide VFD (50) systems meeting application specific requirements. For multiple reasons to include safety standards and electromagnetic interference, reduced ground leakage current is desirable. Building high output voltage VFDs (50) using transistors rated at voltages... Agent: Sughrue Mion, PLLC

20080303470 - Single processor dual motor control: A motor control processor is provided for motor phase current sampling of multiple variable frequency controlled electric motors. The motor control processor comprises an analog-to-digital (A/D) converter and a controller. The A/D converter has multiple analog inputs and generates a digital output signal in response to the multiple analog inputs.... Agent: General Motors Corporation Legal Staff

20080303471 - Motor control apparatus: A motor control apparatus includes: an electric motor having an outer rotor and an inner rotor which can alter mutual relative phases; a phase alternation device which alters the relative phase; a phase position sensor which detects a phase position with respect to the relative phase; and a fail-decision control... Agent: Arent Fox LLP

20080303473 - Robot control apparatus: A robot control apparatus for soft control operation of a robot has position and velocity control loops for each control axis of the robot. The position control gain and the velocity control gain of a specified control axis in soft control operation is set lower than those of the other... Agent: Drinker Biddle & Reath (dc)

20080303472 - Method for replacement of a defective field device by a new field device in a system which communicates via a digital fieldbus, in particular an automation system: A method for replacement of a field device to be replaced by a new field device in a system which communicates via a digital fieldbus, e.g., an automation system; wherein previous parameters, information and/or values of the field device to be replaced are compared by an electronic control unit, which... Agent: Buchanan, Ingersoll & Rooney PC

20080303474 - Systems and methods for controlling limited rotation motor systems: A control system is disclosed for controlling the movement of a limited rotation motor. The control system includes a computer system and a closed-loop motor controller. The computer system is for generating command digital data including digital input commands for controlling the movement of the limited rotation motor. The closed-loop... Agent: Gauthier & Connors, LLP

20080303475 - Method and system for torque control in permanent magnet machines: Methods and systems are provided for controlling permanent magnet machines. The method includes determining a maximum torque of the PM machine based on an error between a commanded d-axis flux and an estimated d-axis flux of the PM machine, and adjusting a torque command based on the maximum torque. The... Agent: General Motors Corporation Legal Staff

20080303476 - Electric motor control device: An excitation current processor of a current controller processes the excitation current corresponding to the magnetic flux instruction from the magnetic flux instruction processor. It multiplies this excitation current with a boost coefficient to obtain an excitation current instruction. Here, the boost coefficient is determined based on the difference obtained... Agent: Lowe Hauptman Ham & Berner, LLP

20080303477 - Oil pump systems and methods for preventing torque overload in motors of oil pump systems: Methods and apparatus are provided for preventing a voltage overload condition of an alternating current (“AC”) motor electrically coupled to an inverter. In an embodiment, the system includes an oil pump, a motor in communication with the oil pump, an inverter module in electrical communication with the motor, the inverter... Agent: General Motors Corporation Legal Staff

20080297073 - Electric force transmission device: An electric force transmission device employs a differential device, having at least three rotating members and having two degrees of freedom that, when rotating states of two of the rotating members are determined, a rotating state of the other is determined, and in which differential device an output to a... Agent: Foley And Lardner LLP Suite 500

20080297074 - Linear-rotary actuators, actuator systems, and methods of operation therefor: In an embodiment, an actuator includes a plurality of stator windings adapted to produce a first stator magnetic field that translates along a stator axis, and to produce a second stator magnetic field that rotates around the stator axis. In addition, the actuator includes a rotor, coupled to a shaft,... Agent: Hope Baldauff Hartman, LLC

20080297075 - Power system with multiple generator units: A method of operating a power system is provided. The method may include running one or more of a plurality of generator units that each include a power source, a first electric generator, and a second electric generator. Additionally, the method may include supplying electricity from one or more of... Agent: Caterpillar/finnegan, Henderson, L.L.P.

20080297076 - Closure panel control apparatus: A controller prestores average moving speed data, which corresponds to respective corresponding positions of a window glass of a door driven by a motor at the time of the closing movement of the window glass, as learning data. The controller senses pinching of an object by the window glass based... Agent: Posz Law Group, PLC

20080297078 - Motor control device: A motor control device that controls the driving of a motor having a permanent magnet provided at a rotor has: an angle detector that detects the angle of the rotor by use of an angle sensor; a current detector that detects, as a detected current, the outflow current from or... Agent: Ndq&m Watchstone LLP

20080297077 - Motor drive control device, motor drive control method and electric power steering device using motor drive control device: A motor drive control device includes: a generation part for generating a current command value; a current detection part for detecting a drive current of an electric motor; a motor feedback control part for controlling feedback of the electric motor based on the current command value and a drive current... Agent: Sughrue-265550

20080297079 - Rotor position sensing system of brushless motor: A rotor position detecting circuit includes a first position detecting circuit having a low-pass filter that shapes up phase voltage induced in a phase coil and a first comparator that compares the output voltage of the low-pass filter with a threshold level to form a first rotor position signal, and... Agent: Posz Law Group, PLC

20080297080 - Hand-guided or stationary power tool having a drive unit: A hand-guided or stationary power tool has a drive unit having a motor that includes a rotor having a permanent magnet and a stator and has a motor control designed to trigger the motor in a first rotational speed range according to a voltage-controlled mode and to trigger the motor... Agent: Kenyon & Kenyon LLP

20080297081 - Brushless motor driving apparatus: In a brushless motor driving apparatus, a drive circuit arranged to rotate a magnet rotor by sequentially switching energization of coils of phases, detect a position of the magnet rotor based on back electromotive force voltage generated in each phase coil, and control the energization of each phase coil based... Agent: Oliff & Berridge, PLC

20080297082 - Drive control device of motor and a method of start-up: A drive control device of motor capable of starting up even a motor of such a type that the polarity of induced voltage does not switch every 180° of electrical angle or the polarity, positive or negative, does not occur with accuracy without causing a reverse rotation is provided. In... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20080297083 - Single-sensor based commutation of multi-phase motor: System, method, and apparatus for commutating and controlling a multi-phase motor using one output rotor sensor and circuitry that measures time between rotor pole-to-pole transitions is disclosed. The exemplary system, method, and apparatus may utilize the polarity of the single-output rotor sensor and the measured time between the polarity transitions... Agent: Mark E. Collins

20080297084 - Control circuit for an electronically commutated motor: A control circuit for an electronically commutated motor (120), having a power stage (122) that comprises at least two semiconductor switches (216, 218) to influence the motor current. The semiconductor switches are controllable by way of commutation signals. The control circuit comprises a current measuring element (170) to make available... Agent: Ware Fressola Van Der Sluys & Adolphson, LLP

20080297085 - Motor driver system and method for protecting motor driver: A motor driver system includes an inverter configured to apply a three-phase voltage to a motor; an inverter driver configured to generate a reference voltage to the inverter to control a motor speed to follow a reference speed; and a motor protector configured to control the inverter driver so that... Agent: Birch Stewart Kolasch & Birch

20080297086 - Cleaner and method for driving the same: A cleaner that can be operated at motive force of sufficient strength by using a battery voltage as well as by using a AC voltage. The cleaner uses a low-resistance-mode motor to rotate a collecting fan. The low-resistance-mode motor is driven by a motor driver. The motor driver drops a... Agent: Greenblum & Bernstein, P.L.C

20080297087 - Apparatus and method for controlling a motor: A motor control device is disclosed that reduces the shock caused by torque increase during switching output of a motor's power generator from PWM wave voltage driving to square-wave voltage driving. Switching of PWM wave voltage driving and square-wave voltage driving is determined based on rotation speed of the motor... Agent: Young & Basile, P.C.

20080297088 - Fuel/electric drive system: A fuel/electric drive system having an internal combustion engine is disclosed, having a generator which is driven by the internal combustion engine and has a first stator winding set, having a first rectifier which is connected to the first stator winding set at the AC voltage end and to a... Agent: Buchanan, Ingersoll & Rooney PC

20080297090 - Drive control circuit for electric motor and electric motor equipped with same: The drive control circuit (200) includes a driver circuit (250) for intermittently supplying the magnetic coils with a supply voltage VSUP; a switching signal generating circuit (240) that generates a switching signal supplied to the driver circuit (250); and a voltage setter (270) that supplies a supply voltage control value... Agent: Harness, Dickey & Pierce, P.L.C

20080297089 - Method for operating a two-phase rotary current controller: A method is disclosed for operating a two-phase rotary current controller. In order to optimize the operation of a two-phase rotary current controller, magnitudes of a parameter that can be varied in both controllable phases of a two-phase rotary current controller is matched in these phases. In particular, the existing... Agent: Harness, Dickey & Pierce, P.L.C

20080297091 - Foot of walking robot and walking robot having the same: Disclosed are a foot of a walking robot, which minimizes tilting of a sole of the foot and reduces a degree of freedom to easily control the walking of the robot, and a walking robot having the same. The foot includes a frame connected to a lower portion of a... Agent: Staas & Halsey LLP

20080297092 - Machining robot control apparatus: A control apparatus (10) for a machining robot (1) adapted to machine a workpiece (20) by coming into contact with an effector (19) of a tool (18) attached to the machining robot with the workpiece comprises: detecting means (15) for detecting a force or moment acting between the effector of... Agent: Drinker Biddle & Reath (dc)

20080297093 - Systems and methods for reduction of cross coupling in proximate signal lines: Various systems and methods for reducing cross coupling in proximate signals are disclosed. As one example, a system for reducing cross-coupling in adjacent signals that includes an active slew rate limiter circuit is disclosed. The active slew rate limiter circuit is operable to receive an input signal, and to provide... Agent: Hamilton,desanctis & Cha

20080297094 - Control apparatus, control method, program and robot: A control apparatus includes: a memory storing data regarding an interference matrix; a position compensation calculator calculating position compensation by using the data based on a target position of an output shaft and a detected position of the output shaft; a torque compensation calculator calculating torque compensation by using the... Agent: Amin, Turocy & Calvin, LLP

20080297095 - Drive control circuit for polyphase motor capable of reducing variation among armature currents of respective phases, and spindle apparatus using the same: Even when there is some degree of variation in the characteristics among components constituting a polyphase motor and a driving circuit therefor, current control signals of respective phases being input to the drive circuit have their amplitude finely adjusted by an amplitude control circuit, so that amplitude is uniform among... Agent: Mcdermott Will & Emery LLP

20080297096 - Disk playback apparatus and stepping-motor control apparatus: When the magnitude of a traverse signal exceeds a predetermined level, the value of a microstep drive signal is changed by one microstep angle so that the rotation angle of the stepping motor changes in a rotation direction in which the magnitude of the traverse signal decreases. A determination is... Agent: Alpine/bhgl

20080297097 - Motor driver system and method for controlling motor driver: A motor driver system and its control methods are discussed. Even when a command magnetic flux decreases as a motor operates in a field weakening region, a current angle can be maintained always below a limit value, thereby obtaining the stability of the motor control.... Agent: Birch Stewart Kolasch & Birch

20080297098 - Washing machine apparatus and method: A washing machine is provided that includes an induction motor and a motor control circuit with a feedback loop. The feedback loop provides rotor speed to a microprocessor of the motor control circuit. The motor control circuit and feedback loop control the motor such that the motor operates in a... Agent: General Electric Company Ge Global Patent Operation

20080297099 - Motor controller, washing machine, and motor control method: A motor controller includes an output voltage modulator that outputs sinusoidally-modulated voltage for driving a motor; a modulation factor specifier allowing specification of a modulation factor greater than 1.0 for the output voltage; a current detector that detects current flowing in the motor; and a field-oriented controller that divides the... Agent: Pearne & Gordon LLP

20080297100 - Apparatus, systems, and methods for reducing voltage source inverter losses: Apparatus, systems, and methods are provided for reducing voltage source inverter losses. One apparatus includes a sensor couplable to the motor and configured to sense an operating frequency of the motor and an amount of torque produced by the motor. The apparatus also includes a controller coupled to the sensor,... Agent: Christopher Devries General Motors Corporation, Legal Staff

20080297101 - Cleaner and method for driving the same: A cleaner that can have the sufficient capability of collecting pollutant particles by a battery voltage as well as a AC voltage. The cleaner uses a switched reluctance motor to rotate a collecting fan. The switched reluctance motor is driven by a motor driver in one of a PWM mode... Agent: Greenblum & Bernstein, P.L.C

20080297102 - Cleaner and method for driving the same: A cleaner that can automatically respond to a change in an AC voltage and a voltage of a battery. In the motor, a motor for rotating a collecting fan is driven by a motor driver. The motor driver drives the motor using a voltage from a voltage selector. The voltage... Agent: Greenblum & Bernstein, P.L.C