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Electricity: motive power systems October categorized by USPTO classification 10/09

20090256502 - Battery management system for a cordless tool: A hand-held, battery powered tool (e.g., nutrunner, drill) includes an output head operatively connected to a motor, a plurality of battery cells, an ON/OFF start switch, a resistance sensor that measures a resistance of the output head to movement, and a controller. When the start switch is ON and the... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20090256503 - Motor control apparatus and electric power steering system: If the magnitude of a command voltage vector is greater than a predetermined voltage value indicated by a voltage limit circle, the magnitude of a voltage vector, which corresponds to a q-axis current and which forms the command voltage vector, is adjusted so that the magnitude of the command voltage... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20090256504 - Motor drive device: A motor drive device for alternately driving a plurality of motors includes a position detection signal processing circuit for processing position detection signals of the plurality of motors, a pre-drive circuit for generating an excitation switching signal of the motors, a plurality of power switching circuits for supplying an electric... Agent: Ratnerprestia

20090256505 - Synchronous motor and control method of synchronous motor: A synchronous motor including therein a three-phase inverter and position sensors, having a unit for calculating a digital input current value from the analog output of an input current detection circuit that detects the input current flowing into the DC input terminal of the three-phase inverter, and a digital feedback... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090256506 - Drive device for synchronous electric motor: Switching elements are driven by a control signal outputted from a control circuit, so that a rotating magnetic field is generated from a stator coil to rotate a rotor of a synchronous electric motor. The control signal is generated through use of a selected modulation scheme, which is selected from... Agent: Posz Law Group, PLC

20090256508 - Electronically commutated motor: An electronically commutated motor (20) has a rotor (28) and a rotor position sensor (30), which sensor, during operation, furnishes a rotational position signal (34). A stator interacts with the rotor (28). The stator has a stator winding strand (26) in an H bridge (22), and a control apparatus (36)... Agent: Oliver Intellectual Property LLC

20090256507 - Method for operating sensorless and brushless motors: A method of aligning a sensorless brushless polyphase DC motor including aligning a rotor to a known stopped position with respect to at least one coil during a shut-down of said motor wherein a voltage is applied to one or more coils in a timed sequence of voltage application steps;... Agent: Tung & Associates

20090256509 - Motor control device: A motor control device has a three-phase bridge circuit, a driving circuit, and a microcomputer. The three-phase bridge circuit has three pairs of MOSFETs for U, V, and W phases of a three-phase AC motor as a control target. The microcomputer has a dead time set value storage unit and... Agent: Nixon & Vanderhye, PC

20090256510 - Reliable drive cut off device: A protective device enables reliably cutting a drive region off the power supply of a guided vehicle. The drive region is connectible to the power supply via at least one drive region switch and it comprises stator sections that are strung together. The sections are connectible to a drive region... Agent: Lerner Greenberg Stemer LLP

20090256511 - Direct flux regulated permanent magnet brushless motor utilizing sensorless control: A permanent magnet rotor for use in a flux regulated permanent magnet brushless machine is constructed such that the inductance along the direct and quadrature axes is markedly different to provide sensorless position feedback for the rotor.... Agent: Carlson, Gaskey & Olds, P.C.

20090256512 - Plurality of configurable independent compute nodes sharing a fan assembly: A system comprising a chassis that includes a plurality of modules and a fan assembly disposed in a distal end of the chassis for drawing air in parallel pathways through the plurality of modules. At least one of the modules is a compute module having a thermal sensor disposed to... Agent: Ibm Corporation (ss/nc) C/o Streets & Steele

20090256513 - Power output apparatus, vehicle equipped with power output apparatus, and control method of power output apparatus: A hybrid electronic control unit sends a combustion start command to an engine ECU when the rotation speed of an engine reaches a combustion start rotation speed by engine cranking. The engine ECU sends an initial explosion advance notification to the hybrid electronic control unit when the crank position of... Agent: Oliff & Berridge, PLC

20090256514 - System for suppressing wheel acceleration after a slip: A power system having a DC electric motor is disclosed. The DC electric motor may include an armature and a field coil electrically connected in series with the armature, the field coil having an input and an output. The power system may also include an additional electrical path. Additionally, the... Agent: Caterpillar/finnegan, Henderson, L.L.P.

20090256515 - Method of detecting state of synchronization loss in stepping motor: In a method of detecting synchronization loss in a stepping motor, a means for applying either control current or control voltage to a coil of each phase to thereby drive a stepping motor and a means for individually measuring a back EMF voltage induced at the coil of each phase... Agent: Oliff & Berridge, PLC

20090256516 - Electromechanical machine control system: The electromechanical machine control system includes a current coordinate transformer (15) for coordinate transforming a current detection value of the electromechanical machine (13) which is inputted into a γ-axis current having the same phase as a position reference and a δ-axis current which advances 90 degrees further than the position... Agent: Sughrue-265550

20090256517 - Weighted field oriented motor control for a vehicle: A system for transitioned field oriented motor control is described. The system may include a module using a current-based algorithm to estimate flux and a module using a voltage-based algorithm to estimate flux. A weighting module operates over a transition range to transition between the flux estimate using the current-based... Agent: Schwegman, Lundberg & Woessner, P.A.

20090256518 - Vector control device of induction motor, vector control method of induction motor, and drive control device of induction motor: The vector control device includes: secondary magnetic flux command computing means (40) for computing a secondary magnetic flux command to an induction motor (6) by taking a maximum voltage that an inverter (4) can generate into account on a basis of a torque command from an external, a DC voltage... Agent: Buchanan, Ingersoll & Rooney PC

20090256519 - System, method and program product for cable loss compensation in an electrical submersible pump system: An electrical submersible pumping (ESP) system can include a pump located in a wellbore, a motor attached to the pump, a power source located at the surface, a cable electrically coupling the power source and the motor, and a current sensor. The ESP system can also include a controller communicating... Agent: Bracewell & Giuliani LLP

20090251080 - Dc motor with directionally determined torque: A device and method for matching the rates of speed at which an electric motor that is drivingly connected to a worm gear raises and lowers a window in an automobile power window assembly. By axially displacing the motor's armature, and/or by varying the thread and tooth profiles of the... Agent: Kremblas, Foster, Phillips & Pollick

20090251081 - Electric motor drive employing hybrid, hysteretic/pulse-width-modulated dynamic braking: A dynamic braking circuit for an electronic motor drive shunts the DC link of the drive with a resistor using two control strategies. The first control strategy used for lower levels of braking employs a pulse width modulated signal and the second control strategy used for higher levels of braking... Agent: Rockwell Automation, Inc./bf

20090251082 - Controller for ac rotary machine: A controller for an AC rotary machine is proposed, by which a stable rotation angular-frequency estimate value can be obtained even in an extremely low speed region of the AC rotary machine, and consequently stable control can be performed. A controller for an AC rotary machine has an angular-frequency estimate... Agent: Buchanan, Ingersoll & Rooney PC

20090251083 - Control apparatus for ac rotary machine: A control controls starting of an AC rotary machine by calculating a resistance drop component, corresponding to a resistance drop of the AC rotary machine, based on a detection current, and adjusts angular frequency of an AC output voltage based on subtracting the resistance drop component from a voltage command,... Agent: Leydig Voit & Mayer, Ltd

20090251084 - Electronically commutated motor: An electronically commutated motor (ECM 20) has a rotor (28) and a stator, associated with which is a winding arrangement (26) to which electrical current (i1) is applied to drive the motor (20), a computer (36), and a PWM generator (84) associated therewith. The motor (20) is designed for operation... Agent: Oliver Intellectual Property LLC

20090251085 - Method and system for motor oscillatory state detection: Method and system for motor oscillatory state detection. According to various embodiments, the present invention presents a method for determining whether a motor is in an oscillatory state. The method includes powering up a motor for a period of time and then monitoring the movement of the motor during a... Agent: Townsend And Townsend And Crew, LLP

20090251086 - Motor control unit: A motor control unit (10) includes: a power converter (40) having a rectifier circuit (20) which rectifies an AC voltage from an AC power supply (31), a capacitor circuit (22) which receives an output of the rectifier circuit (20) and outputs a rectified voltage having pulses from both ends of... Agent: Birch Stewart Kolasch & Birch

20090251087 - Motor controller: A motor controller supplies power to a motor and drives the motor, the motor including a position detector. The motor controller includes a velocity control unit which generates a torque instruction by using a velocity instruction and a velocity signal; a correction processing unit which Fourier-transforms the torque instruction, extracts... Agent: Ditthavong Mori & Steiner, P.C.

20090251088 - Motor driving circuit: A motor driving circuit includes at least one set of switching elements, each set of switching elements being two switching elements connected in series to each other, and a diode connected in parallel with one of the two switching elements connected on a power source side, a terminal of a... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090251089 - Systems and methods for detecting angular position: Methods and systems for detecting an angular position of an electric motor are disclosed, including sending an electrical pulse through a stator coil of the electric motor, determining an approximate angular position of a rotor of the electric motor in response to detecting an timing of a returning electrical pulse... Agent: Continental Automotive Systems Temic Automotive Of North America, Inc.

20090251090 - Drive system for electrically driven dump truck: A drive system for an electrically driven dump truck is capable of preventing a prime mover from stalling and is also capable of enabling electric motors for traveling to make full use of the output horsepower of the prime mover up to an output limit of the prime mover. The... Agent: Mattingly & Malur, P.C.

20090251091 - Sample stage apparatus and method of controlling the same: The present invention provides a stage apparatus capable of reducing a positioning time without increasing a positional deviation. A positioning control method of a sample stage apparatus includes: a high-speed movement step of moving a table to a high-speed movement target position at a first movement speed; a positional deviation... Agent: Mcdermott Will & Emery LLP

20090251092 - Position controller: A position controller includes a position control part that calculates a speed command on the basis of a difference between a position command and a rotation position of a motor, a PI control part that calculates a torque command on the basis of a speed difference between the speed command... Agent: Ditthavong Mori & Steiner, P.C.

20090251093 - Motor control apparatus: A velocity control loop of a motor control apparatus including a notch filter. The notch filter attenuates a signal component at a central frequency from a motor driving command, and outputs the attenuated motor driving command. The driving of a motor is controlled based on the attenuated motor driving command.... Agent: Sughrue Mion, PLLC

20090251094 - Hysteresis mitigation and control method: A system and control method mitigates hysteresis of an adjustable component in the system. A control module can allow small control changes to be effected to the component within limits of the component's and/or the system's normal hysteresis band. The control method can allow finer, more accurate and more aggressive... Agent: Harness, Dickey & Pierce, P.L.C

20090251095 - Motor driven electronic apparatus: A driving method of a high speed rotation stepping motor exhibiting good starting performance, its driving circuit, and a vibration motor and a fan motor employing them. The motor driven electronic apparatus comprises a two pole flat stator, a rotor consisting of a two pole permanent magnet coupling magnetically with... Agent: Mcginn Intellectual Property Law Group, PLLC

20090251096 - Method and apparatus for torque ripple reduction: Methods and apparatus are provided for reducing torque ripple in a permanent magnet motor system comprising a permanent magnet motor coupled to an inverter. The method comprises the steps of receiving a torque command, generating a torque ripple reduction signal in response to the torque command, modifying operational control signals... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

20090243518 - Motive power output device, vehicle equipped with the device, and control method for motive power output device: A torque command for a first motor is set by setting a maximum torque restriction and a minimum torque restriction in a range, where the sum of the torques output from the first and second motors to a driving shaft be within a range from 0 to a required torque,... Agent: Kenyon & Kenyon LLP

20090243519 - Electromagnetic actuator driving method: An electromagnetic actuator includes a stator and a movable body. The stator includes a core provided with magnetic poles and a coil wound on at least one of the magnetic poles. The movable body includes a permanent magnet and supported in such a manner as to make reciprocating in a... Agent: Bacon & Thomas, PLLC

20090243520 - Method for controlling operation of a linear vibration motor: A linear vibration motor includes a stator formed of an electromagnet with a winding, a vibrator provided with a permanent magnet and a control unit for controlling a driving current supplied to the winding of the electromagnet. The linear vibration motor is configured to reciprocate the vibrator relative to the... Agent: Bacon & Thomas, PLLC

20090243521 - Methods and apparatus to reduce the stopping time of spindle motors: Methods and apparatus to reduce the stopping time of a spindle motor are disclosed. An example method includes detecting a dissipation current flowing in a spinning motor; determining when the dissipation current drops below a threshold value; and, in response to the dissipation current dropping below the threshold value, applying... Agent: Texas Instruments Incorporated

20090243523 - Electric rotating machine control system and vehicle driving system including the electric rotating machine control system: A control system includes an electric rotating machine; a driving circuit that is connected to a DC power supply, the driving circuit includes a frequency conversion unit configured such that, when the electric rotating machine is to be driven in a power running mode, the frequency conversion unit converts an... Agent: Oliff & Berridge, PLC

20090243522 - Motor drive system: In a drive system of an AC motor in which a motor current is feedback-controlled, a motor current command is produced in a normal operation according to a torque command value on an optimum efficiency characteristic line so as to select an optimum current phase maximizing an output torque with... Agent: Sughrue Mion, PLLC

20090243524 - Power inverter: A power inverter comprises a power module connected at least to a rotating electric machine, a gate drive circuit board which supplies switching power to the power module, and a rotating electric machine control circuit board which supplies a signal for controlling the waveform of the switching power to the... Agent: Crowell & Moring LLP Intellectual Property Group

20090243525 - Inverter control method: Two current threshold values are adopted, which are larger than the upper limit of current of an operating region. When a rotating speed is smaller than a speed threshold value, the current threshold value is adopted as a criterion to judge whether an input current to an inverter is abnormal,... Agent: Birch Stewart Kolasch & Birch

20090243526 - Device and method for detecting back electromotive force phase and device and method for controlling excitation: In a back electromotive force phase detecting device, a timing generating unit generates a timing signal indicating a start timing, an intermediate timing and an end timing of a 180-degree electrical angle period in a detection target phase, from an excitation pulse signal. A difference calculating unit receives the timing... Agent: Mcdermott Will & Emery LLP

20090243527 - Integral type air conditioner: When cooling operation or dehumidifying operation is started, a blower fan for an evaporator and an exhaust fan for a condenser are driven at an initial rotational number. A compressor is driven at a fixed rotational number. Due to load variation, an operating current supplied from a power source is... Agent: Birch Stewart Kolasch & Birch

20090243528 - Control system for window lifters of a motor vehicle: A control system for a first window lifter adjusts a first window pane of a motor vehicle having a first drive, and for a second window lifter for adjusting a second window pane of the motor vehicle having a second drive, having a control device. The control device may be... Agent: White & Case LLP Patent Department

20090243529 - Motor driving circuit and method thereof: A motor driving circuit includes a control device, a detection module and a driving module. The control device is controlled by a control signal and is coupled to a motor. The control device includes a first terminal, a second terminal and a control terminal, wherein a driving current flowing through... Agent: North America Intellectual Property Corporation

20090243531 - Inverter apparatus: An inverter apparatus comprises an inverter circuit using pairs of switching elements. The pseudo AC voltage of each phase of this inverter circuit is controlled by pulse modulation using pulses generated by a PWM generator, and the pseudo AC voltages are applied to a power supplied load. The average voltage... Agent: Baker Botts LLP C/o Intellectual Property Department

20090243530 - Variable voltage output power source for model trains:

20090243532 - Vehicle having an articulator: Systems and methods for a vehicle mounted articulator are described. A vehicle conveniently allows an articulator to be moved to various remote work sites. In one embodiment, the articulator can be mounted on a movable base, thereby increasing the flexibility of use and/or reach of the articulator. Such vehicle-mounted articulators... Agent: Knobbe, Martens, Olson & Bear, LLP

20090243533 - Servo control apparatus: The apparatus includes both of the following observers: a disturbance observer (5) for adding a disturbance compensation torque Tf, calculated from a torque command T* and an electric motor rotational speed ωm, to a torque command basic signal T0*, calculated on the basis of a deviation between a speed command... Agent: Sughrue-265550

20090243534 - Motor drive circuit: A motor drive circuit comprising: a triangle wave generation circuit configured to charge/discharge a capacitor with a charging/discharging current having a current amount corresponding to an amplitude control voltage for controlling an amplitude of an oscillation voltage that varies in a triangle wave shape, and to output a charging voltage... Agent: SocalIPLaw Group LLP

20090243535 - Multi-input relay board: Fan relay boards are provided that include terminals configured to receive line power of approximately 115 volts, 208 volts, 230 volts, and 277 volts. The boards are configured to convert the line power to an approximately 24 volt output that is applied to a distribution circuit to select a high,... Agent: Johnson Controls, Inc. C/o Fletcher Yoder PC