Electricity: motive power systems inventions 01/08

20080024077 - Portable linear actuator and a method of limiting the maximum force of a motor of such an actuator: The linear portable actuator comprises a direct current electric motor rotationally driving a screw with the aid of a reduction element, wherein said engine is controlled by an electronic module comprising means for the acquisition of instantaneous intensity of the supply current for the motor. The invention is characterized in... Agent: Wenderoth, Lind & Ponack, L.L.P.

20080024078 - Power conversion device and vehicle equipped therewith: A power conversion portion (10) and a connection portion (20) converting power between a fuel cell (FC) and a battery (BAT) corresponding to dc power supply and a motor generator (MG) corresponding to an ac machine, are configured of a matrix converter. For a power flow pattern requiring that the... Agent: Oliff & Berridge, PLC

20080024079 - Motor driving apparatus: A motor driving apparatus includes a converter unit that converts alternating-current voltage supplied from an external power source into direct-current voltage, and a motor driving unit that receives direct-current power output from the converter unit and drives a motor. The motor driving apparatus stores direct-current power from the converter unit... Agent: Lowe Hauptman Ham & Berner, LLP

20080024080 - Motor protection system: To precisely detect the temperature of a power assist motor without using a temperature sensor and enhance an overheating protection function. A calorific value calculating unit calculates a calorific value based upon the difference between a calorific value by current supplied to a motor and the quantity of heat radiation.... Agent: Birch Stewart Kolasch & Birch

20080024081 - Controlling device for range switch mechanism: A controlling device includes a range switch mechanism, range switch operating means, operation frequency monitoring means, and heat generation limit controlling means. The range switch mechanism is adapted to change a shift range using a motor. Through the range switch operating means, an occupant inputs a required shift range. The... Agent: Nixon & Vanderhye, PC

20080024082 - Controller for motor: A controller for a motor carries out field weakening control by using a simple construction to change the phase difference between two rotors, which are disposed around a rotating shaft, without depending on the number of revolutions of a motor. The controller for a motor includes a field weakening current... Agent: Arent Fox LLP

20080024083 - Numerical controller: Disclosed is a numerical controller capable of foreseeing the occurrence of interference during operation of a machine and securely preventing the interference. An advanced position calculating section determines advanced time for the next interference check, based on an end time point of an interference check by an interference checking device... Agent: Staas & Halsey LLP

20080024084 - Linear electric motor controller and system for providing linear control: The invention relates to a method of, and system for, linear speed control for an electric motor, in which a digital to analog converter means is used for converting an 8-bit digital signal to an analog voltage for setting voltage across a motor, a digital state machine means is used... Agent: Winston & Strawn LLP Patent Department

20080024085 - Method for improving scanning probe microscope imaging by inverse filtering: In accordance with the invention, an inverse filter is used to improve scanned images from a scanning probe microscope by removing the effect of the scanning system dynamics from the image data. This may be done in-line or as a post-processing operation.... Agent: Agilent Technologies Inc.

20080024086 - Semiconductor device for controlling rotation of motor: A semiconductor device included in a motor driving apparatus for driving a motor is disclosed. The semiconductor device configured to control rotation of the motor by changing the gain of a control loop of the motor driving apparatus. The semiconductor apparatus includes plural gain maintaining parts, each gain maintaining part... Agent: Dickstein Shapiro LLP

20080024087 - System and method for starting a wound rotor motor: A system and method for starting and regulating a wound rotor motor especially during the period between inactivity and a speed determined by the voltage ratings of the drive system. In a first embodiment, a starting resistor and a starting bypass contactor are connected between the rotor of the motor... Agent: Woods, Rogers, P.L.C

20080018269 - Electronic steering apparatus: An electronic steering and control apparatus and related control methods for a pair of variable drive units. The variable drive units may be hydrostatic, continuously variable transmissions (CVTs), or other similar devices. The apparatus is shown in use with a vehicle that may include a mowing deck.... Agent: Neal, Gerber, & Eisenberg

20080018270 - Method and apparatus for increasing the run time of an electric cart: A method and apparatus for improving the run duration of an electric motor powered by a battery pack is provided. The apparatus inclues an electric motor having a rated motor voltage, a battery pack having an output voltage exceeding the rated motor voltage, and a motor controller which converts the... Agent: Sughrue Mion, PLLC

20080018271 - Rotation control device, rotation control method and construction machine: A control device 50 of an electric rotary excavator generates a rotation speed coefficient in accordance with a setting condition of a fuel dial 13 and a selection condition of a mode selection switch 14 and changes a value of a target speed command value based on the rotation speed... Agent: Frishauf, Holtz, Goodman & Chick, PC

20080018272 - Motor control device and setting method thereof: A motor control device includes a recording module and a controlling module. The recording module has a revolution speed table recording a plurality of predetermined revolution speed values. The controlling module receives a reference revolution speed control signal and measures the reference revolution speed control signal to correspondingly generate a... Agent: Birch Stewart Kolasch & Birch

20080018273 - Rotor position detection circuit and motor driving device: A rotor position detection circuit detects a position of a rotor in a motor from a detection signal of an induced voltage generated in a stator coil. The circuit includes: a first low pass filter having a first reference potential for filtering the detection signal; a comparator for comparing an... Agent: Posz Law Group, PLC

20080018274 - Motor driving apparatus: A motor having plural-phase windings and a rotor includes a position detector, a state determining device, an activation controlling device, and a switching controlling device. The position detecting device detects the position of the rotor according to a comparison signal obtained by comparing terminal voltages of the windings in a... Agent: Akin Gump Strauss Hauer & Feld L.L.P.

20080018275 - Sensorless control in a permanent magnet machine: An apparatus and method for providing improved sensorless control of permanent magnet motors is described. Induced electricity from at least one winding set is used to determine rotor position and provide feedback to a commutation circuit driving at least another winding set isolated from the first.... Agent: Ogilvy Renault LLP (pwc)

20080018276 - Switch for electrical hand tool with cumulative safety function:

20080018277 - Motor and drive control device therefor: The invention provides a drive control device for the motor as well as an electric power steering apparatus using the motor and the drive control device. Respective phase current command values are calculated on the basis of vector control. Pseudo-vector control for controlling respective phases separately is used as current... Agent: Sughrue Mion, PLLC

20080018278 - Motor and drive control device therefor: The invention provides a motor for a brushless DC motor, which has small torque ripple even if a trapezoidal wave current is supplied and has a small size and reduced motor noise. Respective phase current command values are calculated on the basis of vector control. Pseudo-vector control for controlling respective... Agent: Sughrue Mion, PLLC

20080018280 - Control device of electric power steering apparatus: There is provided a control device of an electric power steering apparatus controlling a motor for applying steering assist torque to a steering mechanism through a driving part. The control device includes a control computation part that computes a current command value and controls the motor based on the computed... Agent: Sughrue-265550

20080018279 - Motor driving apparatus, motor driving method and disk driving apparatus: A motor driving apparatus includes a virtual difference voltage detecting unit operable to detect a difference voltage between a virtual neutral point of a resistor circuit connected in parallel to motor coils and a terminal of a motor coil in non-conduction state, a rotor position detecting unit operable to detect... Agent: Ratnerprestia

20080018281 - Control apparatus of brushless dc motor and control method thereof: A controlling apparatus of a BLDC motor and a controlling method thereof. A replacement of a motor with another motor having the different number of poles is automatically detected due to a variation of a load current of the BLDC motor, and rotation speed estimation information of the motor is... Agent: Stanzione & Kim, LLP

20080018282 - Component position determination circuit using a brushless dc motor commutation sensor: A position determination circuit uses the commutation sensor of a brushless DC motor to determine the position of an actuator and/or actuated component 125. The commutation sensor supplies a rotational position signal representative of the rotational position of the motor to a pulse generator. The pulse generator generates a pulse... Agent: Honeywell International Inc.

20080018283 - Drive arrangement for motorized positioning of a functional element in a motor vehicle: A drive arrangement for the motorized movement of a functional element in a motor vehicle. An electric drive motor moves the functional element in two directions via a first drive train and a second drive train. The drive force is transmitted simultaneously via the two drive trains in at least... Agent: Roberts, Mlotkowski & Hobbes

20080018285 - Method and circuit for testing motor: A method for testing a motor having a rotor and a winding is provided. The method includes steps of (a) providing a power to rotate the rotor to a predetermined speed, (b) removing the power, (c) measuring a terminal voltage of the winding while a current within the winding is... Agent: Volpe And Koenig, P.C.

20080018284 - Ac rotary machine constant measuring apparatus for measuring constants of stationary ac rotary machine: In an apparatus for measuring constants of an induction motor (1), an inverter (2) converts an inputted voltage command signal into a single-phase AC power and feeds the single-phase AC power to the induction motor (1) and a current detector (3) detects a current of the single-phase AC power fed... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080018286 - Method for controlling the angular position of a stepper motor: The invention relates to a method for controlling the angular position [STP_POS] of a stopless rotatably movable member [1] of a stepper motor, the said movable member [1] being designed to interact with at least one fixed member [2] whose state is capable of being modified during the rotation of... Agent: Valeo Climate Control Corp. Intellectual Property Dept.

20080018287 - Machine tool controller: In a machine tool controller (1): a position control unit (12) controls, based on an operational signal input from without during manual operation, a moving body's move-to point and moving speed; a memory (13) stores data modeling the moving body and any potentially interfering machine-tool structure; a travel-area checking unit... Agent: Judge Patent Associates

20080018288 - Method of adjusting parameters of a synchronous motor and variable speed drive using such a method: The invention relates to a method of adjusting motor parameters in a variable speed drive intended for controlling a synchronous electric motor with permanent magnets M. The method comprises a step of determining the deviations ΔID and ΔIQ between references and measurements of the flux current and motor torque current,... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080018289 - Single-phase position sensorless permanent magnet motor control apparatus: A single-phase permanent magnet motor control apparatus, in particular, a low price, flat output torque, low vibration, low noise single-phase permanent magnet motor control apparatus, and a fan and pump using such a single-phase permanent magnet motor control apparatus are provided. In a single-phase permanent magnet motor control apparatus for... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080018290 - Mechatronic integration of motor drive and e-machine, especially smart-e-motor: The power switches of an inverter are mechanically integrated with an electric motor of a vehicle and are mounted on the end plate of the motor and employ short connections between the motor a-c terminals and the inverter a-c output terminals. Bond wireless modules are employed. The electronic controls for... Agent: Ostrolenk Faber Gerb & Soffen

20080018291 - Controller for motor: A change in torque produced by a motor having two rotors is reduced when the motor operates in a low-velocity and low-torque operational state. The motor has a first rotor and a second rotor, each of which has a permanent magnet, and an output shaft capable of rotating integrally with... Agent: Arent Fox LLP

20080018292 - System and method for starting a wound rotor motor: A system and method for starting and regulating a wound rotor motor (120) including a phase-controlled SCR converter (150) and a drive circuit (130, 140) having a voltage source inverter (140) and a voltage source converter (130). The SCR converter (150) regulates power transmitted to the drive circuit from the... Agent: Woods, Rogers, P.L.C

20080018293 - Motor start circuit: Motor start circuit for an induction motor, particularly a single phase AC induction motor, with a main winding (4) and an auxiliary winding (5) having two end connections (6, 7) supplied with current, mainly AC, via current supply connections (34, 35), and with a start circuit device (15) serving the... Agent: Mccormick, Paulding & Huber LLP

20080018294 - Inductance contactless starter: An electronic circuit for starting a single phase induction motor operating from a source of alternating current, the motor having a cage type rotor, a coiled stator having at least a main winding and a starting winding, and a permanent capacitor connected in series with the starting winding. The permanent... Agent: Knobbe Martens Olson & Bear LLP

20080018295 - Motor drive control circuit and motor apparatus using the same: A motor drive control circuit includes a rotation control amplifier that compares the lower of a voltage limiting reference voltage of a reference voltage source and a rotation speed control voltage, which controls the rotation speed of the motor, on a terminal with a peak voltage from an impedance element... Agent: Rohm Co., Ltd. C/o Keating & Bennett, LLP

20080018296 - Motor control device: A motor control device that controls a permanent-magnet synchronous motor has: a magnetic flux controller that derives, as a specified excitation current value, a specified current value corresponding to a d-axis component of a current passing through an armature winding; and a current controller that controls, based on the specified... Agent: Ndq&m Watchstone LLP

20080012511 - Planar motor device, stage device, exposure device and device manufacturing method: A planar motor device and the like which can shift at a high acceleration, provide a high aligning accuracy and can be efficiently driven is provided. The planar motor (15) includes a fixed part (16) provided on a base member (14), and a moving part (17) provided on a stage... Agent: Oliff & Berridge, PLC

20080012512 - Control apparatus for electric vehicles: A motor control unit executes a system voltage stabilization control for suppressing variation in a system voltage by operating reactive power of a motor/generator unit including an AC motor, and executes a conversion power control to control the output power of a voltage boosting converter to a command value. A... Agent: Nixon & Vanderhye, PC

20080012513 - Method for controlling brake chopper, brake chopper and frequency converter: A method for controlling brake resistors and a brake chopper, the number of brake resistors being two or more and the brake resistors being connected in series with switches to be controlled, the series connection being connected between a positive and a negative rail of a DC voltage intermediate circuit,... Agent: Buchanan, Ingersoll & Rooney PC

20080012514 - Non-reaction torque drive: Disclosed is a non-reaction torque drive which can be called Reaction Free Drive or suspended support comprising: a Rotor, a Stator, two gyroscopes which are placed in side two frames, two high speed electro motors which rotate the two gyroscopes, and four 24v DC magnets which are used as actuators.... Agent: Barry Choobin

20080012515 - System and method for unattended control of an access barrier: A system and method for unattended control of an access barrier comprises a barrier operator having a timer capable of being updated at predetermined intervals. The barrier operator is configured to receive an auto-close signal that is periodically sent from a wall station, keyless transmitter, or remote transmitter that is... Agent: Renner Kenner Greive Bobak Taylor & Weber

20080012516 - Electromotive furniture drive: An electromotive furniture drive for adjusting at least one movable component of a piece of furniture, having at least one electric motor for adjusting the movable component, at least one operating device with switching elements for actuating the electric motor, at least one control unit for controlling the at least... Agent: Perry Palan

20080012517 - Geometric end effector system: A geometric end effector system for use on a robot. The system includes a platform and a frame secured to the platform. At least one base is arranged at a predetermined position on the frame. The system also has an anchor mount secured to the base and a component connected... Agent: Michael T. Raggio Raggio & Dinnin, P.C.

20080012518 - Docking system: A docking system includes: a station including: a light emitter comprising light emitting elements arranged in a circular arc form so as to cause optical axes of light generated from the light emitting elements to pass through a curvature center of the circular arc; and a self-moving robot including: a... Agent: Nixon & Vanderhye, PC

20080012519 - Moving member movement control apparatus, moving member movement control method and machine tool movement control apparatus: A movement control apparatus for a moving member, includes: a drive unit that moves a moving member by rapid traverse on a first axis and a second axis intersecting the first axis, and overlaps the rapid traverse movements in the two axis directions to thereby allow the moving member to... Agent: Osha Liang L.L.P.

20080012520 - Servo motor controlling method: A servo motor controlling method includes: directly or indirectly detecting a position of a moving body which performs a circular-arc interpolation feeding motion by a servo motor; performing a feedback control for enabling the position of the moving body to comply with a position command; and at a quadrant changing... Agent: Dla Piper US LLP

20080012521 - Servomotor current control method and servomotor: Under a low load condition, a produced torque is small and a synthetic current command I* with respect to an armature of a servomotor is small so that a magnitude in a negative direction of a reactive current command Id* determined by Id*=−|I*|·sin θ is small. As a result, under... Agent: Dla Piper US LLP

20080012522 - Method and apparatus for utilizing commutation sensors for speed and position control: One or more magnets are mounted on the rotor of a motor/actuator and analog Hall Effect sensors are mounted on the stator of the motor actuator to provide the necessary feedback for both speed and position control of the rotor. The feedback system includes signal conditioning circuitry for conditioning the... Agent: Merchant & Gould PC

20080012523 - Control device for stepping motor: A control device for a stepping motor of the present invention stores setting data for controlling a state of the stepping motor in a data storage unit for each of a plurality of basic control items obtained by classifying control from activation to stoppage of the stepping motor. In addition,... Agent: Amin, Turocy & Calvin, LLP

20080007190 - Motor control apparatus and on-vehicle motor drive system: An inverter 32 converts the DC power generated by a generator 21 to AC power, and supplies it to an AC motor 40. A controller 100 controls DC-to-AC conversion in the inverter 32. Interruption means including an overvoltage detector 36 and a semiconductor switch 38 prevents the power generated by... Agent: Crowell & Moring LLP Intellectual Property Group

20080007191 - System and method for controlling velocity and detecting obstructions of a vehicle lift gate: A system and method for controlling a rotational closure system, such as a lift gate, of a vehicle may include sensing an angle of the rotational closure system, generating a drive signal, driving a drive mechanism with the drive signal to output a mechanical force for moving the rotational closure... Agent: Patton Boggs LLP

20080007192 - Temperature-dependent power adjustment of transmitter: A device includes a transmitter, at least one temperature sensor; and a controller. The controller is responsive to the at least one temperature sensor indicating that a temperature has risen above a first threshold to control the transmitter to reduce transmit power from a first power level to a second... Agent: Harrington & Smith, PC

20080007193 - Method and system for multi-mode coverage for an autonomous robot: A control system for a mobile robot (10) is provided to effectively cover a given area by operating in a plurality of modes, including an obstacle following mode (51) and a random bounce mode (49). In other embodiments, spot coverage, such as spiraling (45), or other modes are also used... Agent: Fish & Richardson PC

20080007194 - Method of servo controlling the speed of an electric motor on start-up, and apparatus implementing the system: The present invention discloses a method of servo controlling an electric motor during its start-up, comprising at least one step of measuring the speed after a determined duration counting from the commencement of start-up. During a first start-up, the servo control system determines the deviation between the value of the... Agent: Thomson Licensing LLC

20080007195 - Stepper motor apparatus and method for controlling stepper motor: When an ignition switch is turned on, CPU 12 starts to feed a driving signal into the stepper motor in order to cause the stepper motor to rotate in a backward direction. Upon detecting that a protrusion 9 is in abutment with a stopper 10 on the basis of induced... Agent: Armstrong, Kratz, Quintos, Hanson & Brooks, LLP

20080007196 - Apparatus and method for driving an induction motor: An induction motor drive includes a plurality of inverters, a changeover switch which changes over outputs of the plurality of inverters to be supplied to one induction motor and a changeover controller which controls the changeover switch on the basis of a failure detection signal of one inverter to change... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080007197 - Inverter-driven rotating machine system, rotating machine and inverter used in the same and electric vehicle using the same: Three-phase AC electric power of the inverter INV is supplied to a rear motor generator RMG by using a cable CA1. One end of an additional cable CA2 is connected to rotating machine terminals, namely motor input terminals IT1 of a motor case RMG-C. The other end is connected to... Agent: Crowell & Moring LLP Intellectual Property Group

20080007198 - Control apparatus for ac rotary machine: A control apparatus is for controlling an AC rotary machine which includes a first and second stator elements and a rotor, in which the first stator element can be turned, or offset, in a circumferential direction relative to the second stator element. The control apparatus includes an actuator for adjusting... Agent: Leydig Voit & Mayer, Ltd

20080007199 - Controller and control method of permanent magnet type rotary motor: A controller of a permanent magnet type rotary motor of the present invention includes: a current difference calculator decomposing a primary voltage difference which is a difference between a primary voltage of the permanent magnet type rotary motor and a maximum voltage corresponding to a source voltage, into a field-axis... Agent: Arent Fox LLP