Electricity: motive power systems inventions 01/09

20090026984 - Electric vehicle, and device and method of controlling slip thereof: A slip control device, a slip control method, and a vehicle provided with such a slip control device are provided, with which the vehicle can travel stably even on a slippery road surface maintaining good road holding. The device is provided with a torque directive control means (23) for calculating... Agent: Birch Stewart Kolasch & Birch

20090026985 - Method for actuating an electromagnetic valve: A method for is provided actuating at least one electromagnetic valve containing at least one coil, which can be excited by an excitation current, and an armature, in which the excitation current can be set such that, in response to a signal for actuating the armature from one position into... Agent: Crowell & Moring LLP Intellectual Property Group

20090026986 - Protection method for a reversible electric motor: A method of protecting a reversible electric motor that includes an armature capable of rotating axially about itself between two angular end positions, the axial rotation of the armature undergoing a deceleration phase as each angular end position approaches, where the method involves determining a characteristic value of the deceleration... Agent: Osha Liang L.L.P.

20090026987 - Vehicle drive device and method of controlling vehicle drive device: A vehicle drive device includes an engine (200), a motor generator (MG1) driven by the engine (200) and generating power, a motor generator (MG2) driving the vehicle and generating electric power at the time of regenerative braking, a battery (B) capable of exchanging power to/from the motor generators (MG1, MG2),... Agent: Oliff & Berridge, PLC

20090026989 - Electromagnetic suspension device: In an electromagnetic suspension device comprising one member (1), the other member (2) adapted to perform a relative motion with respect to the one member (1), and a motor (M) capable of at least suppressing the relative motion, and wherein electric current values id and iq of d and q... Agent: Mcglew & Tuttle, PC

20090026988 - Motor control device: A motor control device includes a motor current detector for detecting motor current flowing in a three-phase motor based on current flowing between an inverter driving the motor and a DC power supply, a specified voltage vector generating portion for generating a specified voltage vector indicating a voltage vector to... Agent: Ndq&m Watchstone LLP

20090026990 - Method and device for driving a brushless motor with voltage waveform predisposed for a progressive and automatic switching from a three-phase sinusoidal driving to a square wave three-phase driving: The method and a related device are for driving a brushless motor, according to which by acting solely on the control value, that is by reducing or increasing it, the driving mode eventually passes from a sinusoidal three-phase driving mode to a distorted square-wave three-phase driving mode for increasing or... Agent: Allen, Dyer, Doppelt, Milbrath & Gilchrist P.A.

20090026991 - Synchronization of sequential phase switchings in driving stator windings of a multiphase sensorless brushless motor at sub bemf-detectability speeds: The method of synchronizing sequential phase switchings in driving stator windings of a multiphase sensorless brushless motor with a reconstructed information on the current angular position of a permanent magnet rotor, includes sampling on a currently non-conductive stator winding a voltage induced thereon by the resultant magnetic field produced by... Agent: Allen, Dyer, Doppelt, Milbrath & Gilchrist P.A.

20090026992 - Printer and dc motor speed control device: In speed control that is performed within a single operating cycle of a printer, three-level control of ON control, OFF control, and chopper control, is performed in place of the two-level control of ON control and OFF control, to effectively suppress speed variations due to load variations within a single... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20090026993 - Load drive control circuit: A load drive control circuit includes a drive circuit for driving a load. A control circuit, connected to the drive circuit by diagnostic lines, provides the drive circuit with a control command that specifies an operation state. The drive circuit drives the load in the operation state specified by the... Agent: Patterson, Thuente, Skaar & Christensen, P.A.

20090026994 - Electric power steering control: A method for improving a failure mode diagnostic of an electric power steering system by overcoming a motor electric lock condition due to position sensor signal corruption or other motor faults. If certain conditions are met, the method determines that the motor is in an electric lock condition, and then... Agent: MillerIPGroup, PLC General Motors Corporation

20090026995 - Reliable monitoring of the speed in coordinate measuring appliances: In a method for reliably monitoring the speed of a moveable coordinate measuring device, a first value of the speed is calculated from measured values of the coordinate measurement system. The measured values contain information on positions of the coordinate measuring device. The measured values are further used to determine... Agent: Lerner Greenberg Stemer LLP

20090026996 - Pulse motor control device, control method, control program, and imaging apparatus: A pulse motor control device includes a drive pulse generator configured to generate a drive pulse in accordance with a set cycle, a pulse motor driver configured to generate an excitation current of a pattern corresponding to the number of division per one step of a pulse motor based on... Agent: Frommer Lawrence & Haug LLP

20090026997 - Control apparatus for reluctance type synchronous motor: A control apparatus for a motor (in FIG. 6) includes a q-axis current calculation unit which calculates a q-axis current amplitude value that is proportional to a torque command value given by a host controller; a d-axis current calculation unit which calculates a d-axis current amplitude value that is proportional... Agent: Osha Liang L.L.P.

20090026998 - On-vehicle actuator system: A motor is controlled to always consume power supplied from a power supply system or not to supply power to the power supply system, by performing control to advance or delay a phase of a 3-phase current flowing in the motor or to reduce a percentage of the generated torque... Agent: Crowell & Moring LLP Intellectual Property Group

20090026999 - Motor controller: A motor controller (2) for an axial-gap motor (1), which has a rotor (3), two stators (4, 5) disposed on both sides of the rotor (3) in the axial direction, and armature windings (6, 7) wrapped around the stators (4, 5), includes a field current controller (43, 44) which adjusts... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20090027000 - Linearity for field weakening in an interior permanent magnet machine: Systems and methods are disclosed to provide torque linearity in the field-weakening region for an IPM machine. The systems and methods adjust the q-axis and the d-axis components of the stator current commands of the IPM machine using a flux weakening and a torque linearity control loop respectively. Thereby, torque... Agent: General Motors Corporation Legal Staff

20090021190 - Closure panel control apparatus: In a closure panel control apparatus, an ECU controls a rotational speed of an electric motor, which provides a drive force to drive a closure panel in an opening movement and a closing movement thereof. The ECU obtains a vehicle speed measured with a vehicle speed sensor and receives a... Agent: Posz Law Group, Plc

20090021191 - Mobile electronic apparatus having a rechargeable storage device: A mobile electronic apparatus includes a storage device for storing electrical energy and a rotating mechanism configured to energize the apparatus. The rotating mechanism includes a motor, a shaft connected to the motor, and a mass eccentrically attached to the shaft, where the motor is configured to rotate the shaft... Agent: Hewlett Packard Company

20090021192 - Switched reluctance machine and method of operation thereof: The present invention provides an S SRM (switched reluctance machine), which supports one or more phases and each phase comprises a stator, a rotor and coils. The stator is hollow, cylindrical and comprises stator poles extending inwards, such that a recess is formed between adjacent stator poles. The coils are... Agent: Lawrence Y.d. Ho & Associates Pte Ltd

20090021193 - Dc motor with a rotation direction switching circuit: A DC motor with a rotation direction switching circuit comprises a second power semiconductor assembly and a first power semiconductor assembly which are switched on and off alternatively by changing the polarity of the DC power source, thus providing an electronic rotation direction switching method. The service life is prolonged... Agent: Dr. Banger Shia

20090021194 - Control device: Parameters “n”, “ad”, “pd”, “aq”, “pq” and the like of a motor parameter setting unit 4 are set so as to satisfy [Expression 23] and the like, a d-axis current command value “Idco” outputted from a d-axis current instructing unit 2 and a q-axis current command value “Iqco” outputted from... Agent: Foley And Lardner LLP Suite 500

20090021196 - Device for controlling an electromechanical actuator: A device for controlling an electromechanical actuator includes an electric motor and an actuator operated by the electric motor. It also includes a digital signal processor (DSP) providing data of reference voltages (Ud—ffw, Uq—ffw) on the basis of an decoupled electrical model of the motors. The processor has at least... Agent: Perman & Green

20090021195 - Motor control device and motor drive system: Let an axis parallel to a magnetic flux produced by a permanent magnet provided on a rotor of a motor be called a d-axis, let an axis leading the d-axis by an electrical angle of 90 degrees be called a q-axis, and let control axes corresponding to the d-axis and... Agent: Ditthavong Mori & Steiner, P.c.

20090021197 - Motor driver: A motor driver according to the invention comprises an energizing unit (20), which supplies drive voltage and drive current to a motor (30) including a moving body and three-phase coils (31), a speed-position detector (40), which detects drive speed of the motor and a position of the moving body to... Agent: Wenderoth, Lind & Ponack L.l.p.

20090021200 - Load driving apparatus, vehicle incorporating the same, and control method for load driving apparatus: An ECU estimates an output allowable power of a power storage device based on the temperature and SOC of the power storage device. The ECU also calculates a threshold power based on the power required to start an engine. When the ECU determines that the output allowable power is lower... Agent: Oliff & Berridge, Plc

20090021199 - Motor driving integrated circuit: A motor driving integrated circuit comprising: a speed control circuit configured to control a rotation speed of a motor according to a speed control signal; a detecting circuit configured to detect whether the speed control signal indicates stop of rotation of the motor; and a shut-off circuit configured to shut... Agent: Socal Ip Law Group LLP

20090021198 - Motor drive control system and method for controlling the same: In a motor drive control system configured to include a converter capable of stepping up the voltage, when the locked state of MG2 operating as an electric motor does not occur (NO in S130), a voltage command value VHref for the converter output voltage is set according to respective required... Agent: Oliff & Berridge, Plc

20090021201 - Constant-current and constant-voltage driving circuit of dcbl fan motor with low acoustic noise and controllable speed: A constant-current and constant-voltage driving circuit of a DC motor is used for driving a first magnetic coil and a second magnetic coil included in the DC motor. The driving circuit includes an integrated circuit chip, a first switch and a second switch. The integrated circuit chip generates currents to... Agent: Pai Patent & Trademark Law Firm

20090021202 - Motor control circuit and method with mechanical angle reconstruction: A method of controlling a motor connected to an unbalanced load in accordance with an embodiment of the present application includes operating the motor for a predetermined period of time with a first performance parameter held constant, monitoring a signal related to a second performance parameter, monitoring electrical rotation within... Agent: Ostrolenk Faber Gerb & Soffen

20090021203 - Method and device for controlling and monitoring a hybrid four-wheel drive vehicle: A method for controlling and monitoring a hybrid vehicle including a driving internal combustion engine, and an electric machine that is operational, upon an instruction, in a form of a driving engine and is powered by a battery. The method detects a vehicle operating state, in transmitting, in response, an... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20090021204 - Method and apparatus for thermal sensing in an electrically commutated motor: A control circuit for a motor includes a voltage regulator having a thermal shutdown apparatus that turns off the voltage regulator while retaining power to a micro-controller preventing an automatic restart of the motor absent a recycling of power when the temperature of the control circuit rises above a pre-determined... Agent: Marshall, Gerstein & Borun LLP

20090021205 - Electronic motor controller: A control system for any type of electric motor that automatically learns the characteristics of the motor and computes a motor model for the motor. The control system uses the computed motor model to produce a closed-loop control design that achieves a particular resolution. The control system also uses the... Agent: Occhiuti Rohlicek & Tsao, LLP

20090021206 - Motor soft start-up system: A soft start-up system for a motor that minimizes formation of surge and effectively contains its impacts upon any other source voltage in the peripheral to further promote safe power consumption is mounted on a motor source circuit and includes a power resistance and a relay; the power resistance is... Agent: Pro-techtor International Services

20090021207 - Electric motor control apparatus: A control apparatus for a multiphase AC electric motor having an inverter includes a current control including an abnormal-state current controller; an abnormal-state detector that detects an abnormal state of any of a wire of an electric motor, a wire of an inverter, and a wire connecting the electric motor... Agent: Leydig Voit & Mayer, Ltd

20090021208 - On-line measurement of an induction machine's rotor time constant by small signal d-axis current injection: A controller continually updates rotor time constant estimation of an induction machine by interrogating the induction machine with a small signal oscillation and monitoring the response. The small signal oscillation is injected onto the d-axis current command signal, and is generated at a frequency that represents the most recent estimate... Agent: Kinney & Lange, P.a.

20090015181 - Machine tool with a functional unit having a linear drive and linear drive for same: A machine tool is provided that has a linear drive by means of which a movement unit connected in motion with a functional unit is movable in two axis directions of a movement plane. The linear drive includes two drive units. The primary parts or the secondary parts of the... Agent: Fish & Richardson PC

20090015182 - Motor control device: A motor control device for controlling a d-axis current and a q-axis current on dq coordinates to control a motor, includes a q-axis current command value setting unit which sets a q-axis current command value, an upper limit/lower limit setting unit which sets an upper limit and a lower limit... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090015183 - Power tools: A power tool includes a motor, a first device and a second device. The motor receives a supply of an electric power from a power source externally of the power tool. The first device determines if the electric power supplied from the power source is an AC power or a... Agent: Oliff & Berridge, PLC

20090015184 - System for measuring current in multiple motor coils using a single sensing element: A circuit enables current to be measured in at least two motor leads of a three-phase motor being supplied by a power source generating a chopped sinusoidal waveform for the motor leads. The circuit includes a DC power supply having a pair of output terminals, a current sense transformer having... Agent: Maginot, Moore & Beck LLP

20090015185 - Semiconductor module, and hybrid vehicle drive device including the same: A bus bar constitutes a power line and another bus bar constitutes an earth line. The bus bars are layered in the normal direction of an insulating substrate via an insulating member. Here, the bus bar positioned at the upper side is formed by a metal member and the bus... Agent: Kenyon & Kenyon LLP

20090015186 - Suppressing phased motor voltage transients on disconnect: A clamping circuit is included in a phased motor control circuit, particularly on an electrical connection connected to at least one electrostatic discharge cell and/or the driver control electronics of the phased motor control circuit. The clamping circuit triggers when a voltage that exceeds a clamping turn-on threshold occurs on... Agent: Hensley Kim & Holzer, LLC

20090015187 - Method of optimizing servo controller power in two-dimensional flexutre mems storage devices: A method of optimizing a servo controller power required in the operation of two-dimensional flexure (Microelectronic Memory Storage) MEMS devices. Furthermore, provided is an arrangement for optimizing servo controller power in a two-dimensional flexure MEMS storage device through a utilization of the inventive method.... Agent: Scully, Scott, Murphy & Presser, P.C.

20090015188 - Method for suppressing variation in speed of actuator: The drive controller of an actuator previously measures positioning error of an actuator output shaft caused by the angle transmission error of a wave gear drive and stores it as correction data. In a feedback control loop, a speed feedback value ωf is computed using the detected position feedback value... Agent: Buchanan, Ingersoll & Rooney PC

20090015190 - Device for the control of a smooth starting or ending of a three phase current motor, so-called soft starter: An arrangement for the control of a soft starting or stopping of a three phase current motors (1), a so-called soft starter, is furnished for starting of heavy mechanical, electrical, or hydraulic drives. In order to obtain a space savings with individual or multiple installation and to obtain a better... Agent: Horst M. Kasper

20090015189 - Motor starter: A motor starter whose production is improved is specified. In at least one embodiment, the motor starter includes a power semiconductor switch, an electromechanical bypass switch connected in parallel therewith, and control electronics to drive the bypass switch. In at least one embodiment, the control electronics are in the form... Agent: Harness, Dickey & Pierce, P.L.C

20090009108 - Motor driver circuit, control method thereof, and electronic apparatus: A motor driver circuit comprising a diving circuit for driving at least one motor, a plurality of DC/DC converters, and a stopping circuit for stopping the DC/DC converter if failure is detected in an output of the DC/DC converter, wherein a first signal is outputted when a specific DC/DC converter... Agent: Fitzpatrick Cella Harper & Scinto

20090009109 - Method for driving ultrasonic motor: A method for driving an ultrasonic motor having an actuator section includes: a step of starting the ultrasonic motor by applying an AC voltage with a first frequency to the actuator section; a voltage detection step of detecting a voltage generated at the actuator section while lowering a driving frequency... Agent: Harness, Dickey & Pierce, P.L.C

20090009110 - Motor control apparatus providing exercise resistance and auto-rewinding functions: A motor control apparatus providing an exercise resistance and an auto-rewinding function mainly employs a microprocessor to operate with a current detection feedback loop and a motor rotation speed detection loop for precisely controlling a quick random operation of a motor such that an axle of the motor can quickly... Agent: Kuo-hsiung Chiu

20090009111 - Polyphase rotating machine equipped with an improved control device: A machine comprising a rotor, a stator (12), a control bridge (10) with controlled switches, and a control device (20, 30) supplying control signals (C) to the control bridge (10), wherein the control device comprises means (30) for applying to at least one switch of the control bridge a control... Agent: Berenato, White & Stavish, LLC

20090009113 - Digital control of motor drives: A digital controller for controlling variable speed and dynamic torque applications of an electric motor. The controller includes a state observer monitoring a torque load requirement and sending a signal based on the torque load requirement, and a digital control unit for receiving the signal from the state observer and... Agent: Pauley Petersen & Erickson

20090009112 - Drive device for an adjusting device for adjusting a vehicle part and method for operating a drive device: A drive device for an adjusting device for adjusting a vehicle component of a vehicle is provided. The drive device comprising an electronically commutated motor and an electronic control device which actuates the electronically commutated motor by means of an actuating voltage. The electronic control device has means, by means... Agent: Christie, Parker & Hale, LLP

20090009114 - Synchronous machine: The invention relates to a synchronous machine provided with a stator and rotor, wherein the stator comprises stator teeth (1) provided with respective tooth tips in the bore hole thereof and tooth coils guided around the stator teeth (1), the rotor core discs (2) and a shaft are arranged and... Agent: Henry M Feiereisen, LLC Henry M Feiereisen

20090009115 - Brushless dc-motor: According to the invention, a DC-motor (46) actuates a highly reduced reduction gear of an actuating drive for a flap or for a valve in order to regulate a gas or liquid volume flow, in particular in the field of heating/ventilation/climatisation, or fire or room protection. The electric flow of... Agent: Thaddius J. Carvis

20090009116 - Energization timing determination circuit and determination method for energization timing of motor: An energization timing determination circuit corrects a shift contained in a position signal outputted from a position detecting means and supplies energization timing appropriate to drive a motor. A correction amount computation unit computes detection intervals obtained based on position signals outputted from filters, comparators, and a position detection unit... Agent: Posz Law Group, PLC

20090009117 - Brushless motor control apparatus and control method and motor system: A brushless motor control apparatus includes a mask processing unit to which digital induced voltage signal is input, a energizing current timing generation processing unit, a pulse width detection unit, and an advance angle correction unit for performing advance angle correction. The pulse width detection unit measures pulse width of... Agent: Kenyon & Kenyon LLP

20090009118 - Drive control circuit for electric motor: The drive control circuit for an electric motor is provided. The drive control circuit includes: an original drive signal generator that generates an original drive signal; an excitation interval setter that is able, for each half cycle of respective length π in each 2π excitation cycle of the original drive... Agent: Harness, Dickey & Pierce, P.L.C

20090009119 - Power converting device for electric train: A power converting device for an electric train includes a power converter, an alternating-current motor, a primary control unit, and a control unit. The power converter converts direct-current power into alternating-current power. The alternating-current motor is driven by the alternating-current power output from the power converter. The primary control unit... Agent: Buchanan, Ingersoll & Rooney PC

20090009120 - Signal input method and opening/closing controller: A signal processing circuit (5) is inserted in an auto signal path of a control circuit (1) which performs opening/closing control with a pinch preventing function on the basis of an auto signal (AUTO), a close signal (UP), and an open signal (DOWN) which are input via respective signal paths.... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20090009121 - Method for measuring a motor current: The invention relates to a method for measuring a current that flows through a motor, in which a power switch that supplies the motor with electric energy is controlled by a control unit via a pulse width-modulation signal. The pulse width-modulation signal comprises a cycle of operation and the motor... Agent: Siemens Corporation Intellectual Property Department

20090009122 - Fan motor speed control circuit, fan apparatus, and electronic apparatus: A fan motor speed control circuit includes: a driving circuit configured to drive a fan motor so as to run at a rotation speed corresponding to a drive signal; a comparison circuit configured to output a comparison signal for matching a rotation speed of the fan motor with a target... Agent: Fish & Richardson P.C.

20090009124 - Legged robot: A legged robot that can ensure a large step length while keeping the height of a body trunk at a low position without increasing a moment that is generated due to the gravitational force acting on the trunk and acting on roll joints of legs when standing on one leg... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20090009123 - Statically stable biped robotic mechanism and method of actuating: A robotic mechanism comprising a chassis having a first side and an opposite second side, a first leg member rotatably coupled to the chassis proximate the first side and a second leg member rotatably coupled to the chassis proximate the second side. The first leg member and the second leg... Agent: Eckert Seamans Cherin & Mellott

20090009125 - Robot system: r

20090009126 - Numerical controller controlling acceleration and deceleration of respective control axes up to command speeds: Initial speeds in the move commands for respective control axes at servo-on are determined according to parameter setting, or the comparative relationship or difference in speed among the actual speeds of the control axes so that difference in position between the control axes does not increase as the move commands... Agent: Drinker Biddle & Reath (dc)

20090009127 - Motor control device and electric power steering device using the same: A motor driving control device includes a current instruction value computing section 31 which computes a current instruction value for driving a brushless motor 12, a motor current detector 38 which detects a motor current of the brushless motor 12, a current controller 34 which computes a voltage instruction value... Agent: Sughrue-265550

20090009128 - Control apparatus: A control apparatus of the present invention comprising a control unit outputting a control signal controlling a servo motor and suppressing natural vibration of a controlled object including a motor and a machine driven by the motor while controlling the controlled object, comprising a frequency analysis unit analyzing a frequency... Agent: Lowe Hauptman Ham & Berner, LLP

20090009129 - Active damping for synchronous generator torsional oscillations: A generator control unit (GCU) provides active damping of a synchronous generator by monitoring the speed of the synchronous generator and detecting oscillations in the monitored speed. The oscillations are indicative of torsional oscillations within the mechanical drivetrain including the synchronous generator or generators. In response to detected oscillations in... Agent: Kinney & Lange, P.A.

20090001906 - Method and apparatus for controlling asynchronous motors: Methods and apparatus are provided for controlling first and second motors. A controller includes a processor supplying a control signal for driving the motors and a logic circuit coupled to the processor. The processor produces a first trigger coordinated with the rate of the first motor and a second trigger... Agent: General Motors Corporation Legal Staff

20090001907 - Commutation of an electromagnetic propulsion and guidance system: A method of commutating a motor includes calculating an adjustment electrical angle, and utilizing the adjustment electrical angle in a common set of commutation equations so that the common set of commutation equations is capable of producing both one and two dimensional forces in the motor.... Agent: Perman & Green

20090001908 - System and method of providing a thermally stabilized fixed frequency piezoelectric optical modulator: A device for generating controlled vibration in an uncontrolled temperature environment includes a driving circuit that generates a signal having a first frequency and has a temperature-sensitive driving unit, a vibratory element coupled to the driving unit that vibrates at the first frequency according to the generated signal, and a... Agent: Marshall, Gerstein & Borun LLP

20090001909 - Automotive power inverter with reduced capacitive coupling: An automotive power inverter is provided. The power inverter includes a chassis, a microelectronic die coupled to the chassis and having an integrated circuit formed thereon, and an insulating region between the chassis and the microelectronic die.... Agent: General Motors Corporation Legal Staff

20090001910 - Control method, control circuit, and control program for power retractable mirror: A control method can stop motor operation reliably when a mirror rotator is mechanically locked at a driven end of the mirror rotator. The control method operates a motor 18 according to battery voltage. The motor 18 is operated with an operating time set and is stopped after a lapse... Agent: Hedman & Costigan P.C.

20090001911 - Conduction angle control of a switched reluctance generator: A control system is disclosed. The control system has a switched reluctance generator coupled to provide electrical power through a DC bus to a motor. The control system also has a controller in communication with the switched reluctance generator, the motor, and the DC bus. The controller is configured to... Agent: Caterpillar/finnegan, Henderson, L.L.P.

20090001912 - Control device for three-phase brushless motor: A control apparatus for a three-phase brushless motor, in which a control circuit includes time interval calculation means (133 in FIG. 4). The time interval calculation means (133) is endowed with at least one time interval calculation mode. In the time interval calculation mode, pluralities of time intervals which correspond... Agent: Sughrue Mion, PLLC

20090001913 - Drive control circuit for electric motor: The drive control circuit for an electric motor is provided. The drive control circuit includes: an original drive signal generator that generates an original drive signal, based on a positional signal which indicates a relative position of a first drive member and a second drive member of the electric motor;... Agent: Harness, Dickey & Pierce, P.L.C

20090001914 - Electric-motor-equipped vehicle: An electric-motor-equipped vehicle of the present invention includes an electric motor which receives a power supply from a storage apparatus and drives the vehicle, or assists a driving of the vehicle by an internal combustion engine. The electric motor includes: an inner circumference side rotor and an outer circumference side... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20090001915 - Method and apparatus for active voltage control of electric motors: Methods and apparatus are provided for dynamic voltage control of electric motors. An inverter provides an output voltage to an electric motor based on a gate voltage. The method includes determining a speed of the electric motor and modifying the gate voltage based on the speed of the electric motor.... Agent: General Motors Corporation Legal Staff

20090001916 - Motor controlling device and method tehreof: A motor controlling device and a motor controlling method are provided. The motor controlling device includes a first sensor, a second sensor and a signal switching circuit. The signal switching circuit is electrically connected to the first and second sensors, respectively. The signal switching circuit is switched to the first... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20090001917 - Reduced-complexity self-bearing brushless dc motor: A method of commutating a motor includes operatively interfacing a stator and actuated component of the motor, arranging at least two winding sets relative to the actuated component, and independently controlling the at least two winding sets so that with the at least two winding sets the actuated component is... Agent: Perman & Green

20090001918 - Transmission device: A transmission device includes a power output unit and a non-contact type sensing unit. The power output unit includes a power output member that is rotatable about an axis, and has at least one sensed portion that is co-rotatable with the power output member about the axis. The non-contact type... Agent: Nixon Peabody, LLP

20090001919 - Robot: A robot, wherein the operating amounts of the first and second actuators are adjusted according to a torque necessary for maintaining a body member and an end member at specified angles in a mechanism in which the body member (361) and the end member (363) are rotatably connected to each... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20090001920 - Micro-step driving method of stepping motor and electrically-driven device using stepping motor: In a micro-step drive and driving method of a stepping motor, the stepping motor generates a drive force for movement on a prescribed path of a moving unit provided in an electrically driven device, a standard point and a target point of an operation are set on the path, the... Agent: Murata Machinery, Ltd. (muratec) C/o Keating & Bennett LLP

20090001921 - Electronic method for starting a compressor: A motor starting apparatus (10) includes a motor starting relay (112) to switch a motor starting capacitor (110) into a motor circuit across a run capacitor (111). The system control (116) includes an electronic voltage measurement circuit to measure a winding voltage (113, 114) of the motor winding (102, 103).... Agent: Marjama Muldoon Blasiak & Sullivan LLP

20090001922 - Motor controlling device, motor drive system, method of motor control, semiconductor device and electronic device: A motor control device is disclosed which is arranged so as to perform a PWM control for a permanent magnet motor including a rotor having a permanent magnet and a stator with a multiphase winding. The motor control device includes a position detection unit which executes an analog computation process... Agent: Pearne & Gordon LLP

20090001924 - System and method for dynamic field weakening: A field weakening control system for use with an induction motor is disclosed. The field weakening control system has a sensing device configured to generate a signal indicative of a speed of the induction motor and a controller. The controller is configured to determine an initial voltage command based on... Agent: Caterpillar/finnegan, Henderson, L.L.P.

20090001923 - Systems and methods for operating z-source inverter inductors in a continuous current mode: Systems, apparatus, and methods for operating inductors in a Z-source inverter in a continuous current mode are provided. One system includes an AC motor, a Z-source inverter, and a processor. The inverter is configured to provide current and reactive power to the AC motor. The processor is configured to monitor... Agent: General Motors Corporation Legal Staff

20090001925 - Power conversion circuit: A desired current is caused to flow through a coil by controlling switching of switching elements by a PWM controller. For a voltage sensor, a value of Vo−ΔV, which is a difference between a midpoint voltage Vo of the switching elements and a predetermined threshold voltage ΔV, and a value... Agent: Oliff & Berridge, PLC