Electricity: motive power systems inventions 02/09

20090051303 - Method and apparatus for controlling movement of a device: A method of controlling movement of a device includes the steps of actuating a motor to move the device; measuring the motor current; and controlling movement of the device in response to the motor current exceeding a motor current threshold.... Agent: Tarolli, Sundheim, Covell & Tummino L.L.P.

20090051304 - Vehicle, control method thereof and braking device: During braking, lower limits are set based on an input limit of a battery and a brake pedal position, and the set lower limits limit regenerative torques output from motors. This prevents an output of an excessive braking force and torque shock caused by a hydraulic brake being not able... Agent: Kenyon & Kenyon LLP

20090051305 - Electronic commutation method and related apparatus: A method and apparatus for electronic commutation of a pulse width modulation (PWM) controlled motor involves temporarily increasing the frequency of one or more PWM drive signals applied to the motor upon the occurrence of an asynchronous commutation event.... Agent: Delphi Technologies, Inc.

20090051306 - Electric power tool, control unit and recording medium: An electric power tool includes a direct current motor, at least one switching device, a trigger switch, a control unit, and a drive unit. The control unit sets a driving duty ratio for PWM controlling the direct current motor so as to increase the driving duty ratio in a stepwise... Agent: Oliff & Berridge, PLC

20090051307 - Excessive temperature detecting system of electric motor controller: An electric motor controller for a vehicle has a voltage detecting section for detecting the voltage of a filter capacitor inserted on a direct current side of an inverter device including a semiconductor element for large electric power; an electric current detecting section for detecting an output electric current of... Agent: Buchanan, Ingersoll & Rooney PC

20090051308 - System and method to determine electric motor efficiency using an equivalent circuit: A system and method for determining electric motor efficiency includes a monitoring system having a processor programmed to determine efficiency of an electric motor under load while the electric motor is online. The determination of motor efficiency is independent of a rotor speed measurement. Further, the efficiency is based on... Agent: Ziolkowski Patent Solutions Group, Sc (eaton)

20090051309 - Process for driving an electric machine and driver system therefor: A method for operating an electric machine with a driver system is provided, in which an operating variable of the electric machine and/or of the driver system is monitored. The validity of the input variables is checked with regard to their checksum and whether the input variables are up-to-date, and... Agent: Crowell & Moring LLP Intellectual Property Group

20090051310 - Closed loop stepper motor control: System and method for controlling a stepper motor. A current position of the stepper motor may be received. A position error of the stepper motor may be determined using the current position of the stepper motor. A velocity profile may be maintained based on the position error, such that it... Agent: Jeffrey C. Hood Meyertons Hood Kivlin Kowert & Goetzel PC

20090051311 - System and method for determining stator winding resistance in an ac motor: A system and method for determining stator winding resistance in an AC motor is disclosed. The system includes a circuit having an input connectable to an AC source and an output connectable to an input terminal of an AC motor. The circuit includes at least one contactor and at least... Agent: Ziolkowski Patent Solutions Group, Sc (eaton)

20090045760 - Linear drive for sliding doors or the like: The invention is directed to a linear drive for sliding doors or the like, particularly linear drives based on linear motors. A linear drive, according to the invention, for at least one part which is movable along a movement path, particularly a sliding door leaf, has at least one linear... Agent: Cohen, Pontani, Lieberman & Pavane LLP

20090045761 - Diesel-electric drive system having a synchronous generator with permanent-magnet excitation: The invention relates to a diesel-electric drive system comprising a permanently excited synchronous generator (4), which is mechanically coupled to a diesel motor (2) on the rotor side and has an electrical connection to a voltage link converter (6) on the stator side, said converter having a respective self-commutated pulse-controlled... Agent: Henry M Feiereisen, LLC Henry M Feiereisen

20090045762 - Motor drive circuit, method, and cooling device using the same: A drive signal generation circuit generates drive signals that control ON and OFF states of transistors of a H-bridge circuit, in accordance with a target value of torque. A driver circuit alternatively turns ON and OFF high side transistors, and low side transistors of the H-bridge circuit, based on the... Agent: Cantor Colburn, LLP

20090045763 - Method and arrangement for monitoring signals: The invention relates to a method and to an arrangement for monitoring signals which are guided to a multi-phase motor by an end stage and the pulse width thereof is controlled by a controller. The total of the pulse widths of the signals of each phase is measured by, respectively,... Agent: Cohen, Pontani, Lieberman & Pavane LLP

20090045764 - Driver for an inductive load: A driver (1) supplies an output voltage (VL) to an inductive load (30). The driver comprises an input to receive a pulse width modulated control signal (CS) having a controllable duty cycle within a predetermined range. A first switch circuit (10) receives a first switch signal (CS; ICS) to supply... Agent: Nxp, B.v. Nxp Intellectual Property Department

20090045765 - Field controllable rotating electric machine system with magnetic excitation part: In a magnet-exciting rotating electric machine system, every magnetic salient pole group to be magnetized in a same polarity is collectively magnetized by a magnetic excitation part. In the magnetic excitation part, a main magnetic flux path in which a magnetic flux circulates through the armature and a bypass magnetic... Agent: Ditthavong Mori & Steiner, P.C.

20090045766 - Obstacle following sensor scheme for a mobile robot: A robot obstacle detection system including a robot housing which navigates with respect to a surface and a sensor subsystem aimed at the surface for detecting the surface. The sensor subsystem includes an emitter which emits a signal having a field of emission and a photon detector having a field... Agent: Fish & Richardson P.C.

20090045767 - Position controlled drive mechanism: A position controlled drive mechanism including an electric motor, an encoder associated with the rotatable shaft of the electric motor and a controller connected to both the electric motor and the encoder is described herein. The controller includes at least two of the following modes of operation in which the... Agent: Fay Kaplun & Marcin, LLP

20090045768 - Single switch controlled switched reluctance machine: An improved single-switch control circuit for use in a multi-phase switched reluctance machine is provided. The control circuit includes at least first and second phase windings, a switch, a capacitor, and a diode. The capacitor may have a polarity opposite that of a power source in the control circuit. The... Agent: Deltagee Inc./ Finnegan Henderson LLP

20090045769 - Motor control apparatus: The present invention restrains high frequency leakage current while reducing ripples of current flowing through a motor having one set and another set of independent phase windings. A plurality of inverter type drive means drives the respective phase windings and a PWM control means controls the respective inverter type drive... Agent: Alston & Bird LLP

20090039805 - Changeover device of pull cord control and wireless remote control for a dc brushless-motor ceiling fan: A change-over device of pull cord control and wireless remote control for a DC brushless-motor ceiling fan is to have a driver installed in a ceiling fan basic body, and the driver has a detecting unit for detecting whether or not a connector positioned in a hanging bell is connected... Agent: Sinorica, LLC

20090039806 - Ultrasonic motor driving method and ultrasonic motor: There is provided a method of driving an ultrasonic motor configured so that two alternating voltages having a predetermined difference between respective phases and having predetermined drive frequencies are applied to a laminated piezoelectric body that has driving parts abutting a member to be driven, whereby simultaneous excitation of vertical... Agent: Scully Scott Murphy & Presser, PC

20090039807 - Motor controller: In one aspect, a control circuit to control a speed of a motor includes a PWM oscillator configured to generate a PWM output signal having a duty cycle. The speed of the motor is controlled by the PWM output signal to be proportional to the duty cycle. The control circuit... Agent: Daly, Crowley, Mofford & Durkee, LLP

20090039808 - 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

20090039809 - Motor control method and device: A control device includes a drive control unit that performs control for driving the electromagnetic coil, and a regeneration control unit that performs control for regenerating power from the electromagnetic coil. The drive control unit includes an excitation interval setting unit that sets an excitation interval and a non-excitation interval... Agent: Harness, Dickey & Pierce, P.L.C

20090039810 - System for seamless estimation of speed and/or position, including standstill of a permanent magnet rotor of an electric motor: c

20090039811 - Inhibitors of hsp90: The invention relates to the use of 1H-indazol-6-ol compounds and salts thereof in the treatment of proliferative diseases and for the manufacture of pharmaceutical preparations for the treatment of said diseases, pharmaceutical preparations comprising 1H-indazol-6-ol compounds, novel 1H-indazol-6-ol compounds, and a process for the preparation of the novel 1H-indazol-6-ol compounds.... Agent: Novartis Institutes For Biomedical Research, Inc.

20090039813 - Method and apparatus for controlling electric motor: A method for controlling a motor current supplied to an electric motor by using an inverter device is provided. The inverter device includes an inverter circuit and a capacitor connected to an input of the inverter circuit. The method includes controlling the inverter circuit in such a manner as to... Agent: Woodcock Washburn LLP

20090039812 - Motor drive device: The present invention presents a motor drive device capable of detecting jamming accurately without falsely detecting jamming when a movable part contacts with other members. Jamming by a backrest is detected by judging whether the value of a period of one pulse P1 and a period of the next pulse... Agent: Lucas & Mercanti, LLP

20090039814 - Trapping prevention guard and method for controlling a motor-driven adjusting device: In order to reliably detect a jamming situation, in particular in a seat adjusting means, provision is made for a total loading exerted by the drive during a start phase to be determined and for this to be fixed as the basic loading. The existence or non-existence of a jamming... Agent: King & Spalding

20090039815 - Power supply device for vehicles: A power supply device for vehicles, output units (10a, 10b) thereof are connected to a motor (5), includes a fuel cell (1) which is connected to the output units (10a, 10b), a capacitor (2) which is connected in parallel to the fuel cell (1), a lithium ion battery (21) which... Agent: Squire, Sanders & Dempsey L.L.P.

20090039816 - Assembly comprising a three-phase machine and a frequency converter: A system is provided that furnishes expert procedural guidance based upon patient-specific data gained from surgical instruments incorporating sensors on the instrument's working surface, one or more reference sensors placed about the patient, sensors implanted before, during or after the procedure, the patient's personal medical history, and patient status monitoring... Agent: Buchanan, Ingersoll & Rooney PC

20090039817 - Audible noise reduction for single current shunt platform: A method for reducing audible motor noise in a motor drive, wherein the motor drive includes a motor controller driving a PWM space vector modulator providing gating pulses to an inverter providing phase currents to the phase windings of the motor, and wherein phase currents of the motor are determined... Agent: Ostrolenk Faber Gerb & Soffen

20090039818 - Drive system: A drive system for a shaft of a machine is described, which includes a control device, a drive controller and at least one input receiving input signals and at least one output supplying output signals. The drive controller includes drive controller firmware which stores linkable functional control elements. The control... Agent: Henry M. Feiereisen Henry M. Feiereisen, LLC

20090039819 - Walk and roll robot: A mobile robotic unit features a main body, a plurality of legs for supporting the main body on and moving the main body in forward and reverse directions about a base surface, and a drive assembly. According to an exemplary embodiment each leg includes a respective pivotal hip joint, a... Agent: Nasa Goddard Space Flight Center

20090039820 - Motor controller having a multifunction port: In one aspect, a control circuit to control a speed of a motor includes a control logic circuit connected to a multifunction port. The control logic circuit is configured to receive a control signal provided at the multifunction port and to provide response signals based on the control signal to... Agent: Daly, Crowley, Mofford & Durkee, LLP

20090039821 - Step motor driving apparatus: A step motor driving apparatus includes a micro control unit (MCU), a pulse generator, a first step motor driver, a second step motor driver, and a communication port. The first step motor driver is configured for driving a first step motor and connected to the MCU. The second step motor... Agent: PCe Industry, Inc. Att. Cheng-ju Chiang

20090039822 - Position detecting apparatus having electric motor and method for detecting position: A reference position detecting apparatus includes an electric motor and a motor control unit. The electric motor includes a plurality of first coils and a plurality of second coils. The electric motor further includes a rotor that rotates when at least one of the plurality of first coils and the... Agent: Nixon & Vanderhye, PC

20090039823 - Stepper motor control apparatus: A stepper motor apparatus controls a stepper motor by taking a maximum response speed and maximum response acceleration of the stepper motor into account.... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20090039824 - High power-density static-field ac conduction motor: An ac motor for high-torque drive has a transformer with a magnetic circuit with a central limb. Either the two ends or the two connected electrodes of the secondary winding of the transformer project at an angle to the longitudinal axis of the secondary winding; an armature rotor dielectrically bridges... Agent: Anadish Kumar Pal

20090039825 - Absolute position sensor for field-oriented control of an induction motor: Systems and methods are provided for an automotive drive system using an absolute position sensor for field-oriented control of an induction motor. An automotive drive system comprises an induction motor having a rotor, and a position sensor coupled to the induction motor. The position sensor is configured to sense an... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

20090033250 - Power unit: A power unit which makes it possible to reduce power transmitted from a prime mover to a driven part via an electrical path, to thereby increase the efficiency of driving the driven part. A first rotating machine of the power unit inputs and outputs energy between a stator and first... Agent: Squire, Sanders & Dempsey L.L.P.

20090033251 - Series-coupled two-motor drive using double-ended inverter system: Systems and apparatus are provided for an inverter system for use in a vehicle. The inverter system comprises a six-phase motor having a first set of three-phase windings and a second set of three-phase windings and a three-phase motor having a third set of three-phase windings, wherein the third set... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

20090033255 - Charging energy sources with a rectifier using double-ended inverter system: Systems and methods are provided for charging energy sources with a rectifier using a double-ended inverter system. An apparatus is provided for an electric drive system for a vehicle. The electric drive system comprises an electric motor configured to provide traction power to the vehicle. A first inverter is coupled... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

20090033252 - Double ended inverter system for a vehicle having two energy sources that exhibit different operating characteristics: A double ended inverter system for an AC electric traction motor of a vehicle is disclosed. The inverter system serves as an interface between two different energy sources having different operating characteristics. The inverter system includes a first energy source having first operating characteristics associated therewith, and a first inverter... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

20090033254 - Double ended inverter system with a cross-linked ultracapacitor network: A double ended inverter system for an AC traction motor of a vehicle includes a fuel cell configured to provide a DC voltage, an impedance source inverter subsystem coupled to the fuel cell, a DC voltage source, and an inverter subsystem coupled to the DC voltage source. The impedance source... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

20090033253 - Electric traction system for a vehicle having a dual winding ac traction motor: An electric traction system for a vehicle having a high voltage battery and a low voltage battery is provided. The system includes an AC electric motor and a double ended inverter system coupled to the AC electric motor. The AC electric motor has a first set of windings and a... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

20090033256 - Powered opening and closing system for vehicle's door: A powered opening and closing system includes a door supported on a vehicle body, a motor, a drive mechanism for moving the door in opening and closing directions by virtue of power of the motor, an operation detecting sensor for detecting a handle operation when-the door is operated to open... Agent: Foley And Lardner LLP Suite 500

20090033259 - Method of estimating the state of a system and relative device for estimating position and speed of the rotor of a brushless motor: A method for estimating the state of a system, as well as an extended Kalman filter (EKF), allows nonlinear mathematical models to be used for describing the system. Accurate precision is provided since the method is based on an EKF technique while using a filter that implements a first degree... Agent: Allen, Dyer, Doppelt, Milbrath & Gilchrist P.A.

20090033260 - Method and device for controlling a brushless direct-current motor: Presented in an apparatus for controlling a brushless DC motor with a permanent magnet arranged on a rotor and a stator with windings. The apparatus includes an observer that is adapted to determine an estimated temperature of the permanent magnet as a function of the temperature of the windings, and... Agent: Cohen, Pontani, Lieberman & Pavane LLP

20090033261 - System and method for controlling a synchronous electric motor, particularly for household appliances: The system (ECS) comprises a rectifier circuit (RC) to supply a direct current voltage (VB) as output; a driver circuit (DC) which is connected to a rectifier circuit (RC) and includes a plurality of controlled switches (SW1-SW4) which can permit passage of a current in the stator winding (W) selectively... Agent: Harness, Dickey, & Pierce, P.l.c

20090033258 - Motor controller: A motor controller for an axial-gap motor permits a reduced size of the entire system of including a drive circuit and a power source of the motor, reduced cost, and higher reliability to be achieved by controlling the energization mode of the motor. The motor controller has a torque command... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20090033257 - Voltage control of upconverter in a motored vehicle drive: When an ECU receives a transmission signal having a high level from a transmission, the ECU exerts torque reduction control to reduce a torque control value for a motor generator. Furthermore the ECU sets an optimum (or target) value of a voltage as based on the torque control value and... Agent: Oliff & Berridge, PLC

20090033262 - Sensorless controlling apparatus of brushless motor: A sensorless controlling apparatus for controlling a brushless motor includes a speed calculator for calculating speed of a rotor ω, an angle calculator for calculating rotor angle θ at a predetermined time interval, and an angle controller for calculating correction angle Δθ based on the current value of a d-axis... Agent: Mcginn Intellectual Property Law Group, PLLC

20090033263 - Method and related circuit for driving a sensorless brushless motor: A method of driving a sensorless brushless motor in PWM mode includes tristating a winding during a time window for detecting a zero-cross of the back electromotive force induced in the winding by rotation of a rotor, monitoring voltage of the tristated winding during an unmasked portion of the time... Agent: Allen, Dyer, Doppelt, Milbrath & Gilchrist P.A.

20090033264 - Method and device for determining a gradient-limited cumulative setpoint torque from a setpoint torque of a closed-loop speed control: In a method for determining a gradient-limited setpoint torque from a requested setpoint drive torque and a controller setpoint torque of a closed-loop speed control, the gradient of an unlimited cumulative setpoint torque, which is a function of the requested setpoint drive torque and the controller setpoint torque of the... Agent: Kenyon & Kenyon LLP

20090033265 - Monitoring unit for monitoring the load of an electric motor: A monitoring unit is disclosed for monitoring the load of an electric motor. In at least one embodiment, the monitoring unit provides for the motor load to be monitored over the entire torque range. For this purpose, the monitoring unit uses linearizing matching of the indication variable. First, the monitoring... Agent: Harness, Dickey & Pierce, P.L.C

20090033266 - Solid state switch gate firing with phase shift delay line: A gate firing phase shift delay line technique is described for use in DC motor drive systems and is easily adaptable for controlling a plurality of electronically coupled power modules. A drive regulator is configured to produce a master gate firing timing signal for controlling the gate firing pattern of... Agent: Fletcher Yoder Law (for Rockwell Automation)

20090033267 - Wiper apparatus: A wiper apparatus includes: a wiper switch; an operation state detection device; a control device having an output section and an input section; a wiper motor; and a power supply. The wiper motor and the control device are connected by a single signal line; the operation state detection device and... Agent: Arent Fox LLP

20090033268 - Power supply system with function of short circuit detection: There are provided upper and lower switching elements 1U to 1W and 2U to 2W for energizing motor drive windings 4U to 4W, a control circuit 20 that starts outputting a control signal for energization based on an energization instruction, pre-drive circuits 8U to 8W and 9U to 9W for... Agent: Hamre, Schumann, Mueller & Larson P.C.

20090033269 - Method for using a control device in a safety-related environment: There is described a method for using a mobile control device, with which a machine can be operated within an assigned effective range. To this end an effective range list is configured, which is checked on the basis of transponder data from RFID transponders.... Agent: Siemens Corporation Intellectual Property Department

20090033271 - Machine tool having function of correcting mounting error through contact detection: A machine tool capable of automatically correcting an orientation of a workpiece or machining attachment based on detection results from position detectors that the machine tool inherently has. The machine tool comprises: position detectors; position deviation determining means; contact detection means that detects a contact between a probe and a... Agent: Lowe Hauptman Ham & Berner, LLP

20090033270 - Position feedback device for a motor: A position feedback device for a motor comprises a driven member and a sensing device. The driven member is indirectly connected to the motor and driven by it. The sensing device detects the travel length of the motor by sensing the driven member. With the method of indirectly sensing the... Agent: Dr. Banger Shia

20090033272 - Techniques for redundancy and fault tolerance in high demand machine safety applications: Self-sensing feedback functionality for electromechanical actuators/motors is provided for use in operation and/or as a redundant safety mechanism to attain safety certification without adding extra bulk or wiring to the motor. An actuator can be manufactured having one or more saliencies that cause a spatial variance of inductance. A high... Agent: Amin Turocy & Calvin, LLP Attention: Heather Holmes

20090033273 - Direct drive torque motor: A direct drive torque motor comprises: a body, a direct drive torque motor, a main shaft, a bearing assembly, a brake assembly, a cooling assembly, and a position-sensing assembly. The bearing assembly is used to position the main shaft in the direct drive torque motor and the body. The brake... Agent: Dr. Banger Shia

20090033274 - System for using a multi-phase motor with a double-ended inverter system: Systems and apparatus are provided for an inverter system for use in a vehicle having a first energy source and a second energy source. The inverter system comprises an electric motor having a first set of windings and a second set of windings. The inverter system further comprises a first... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

20090033275 - Controller for induction motor: A controller for an induction motor includes a storage device which stores values in a plurality of addresses, a first counter which transits circularly among first to N-th states, a second counter which transits circularly among first to fourth states, a calculating section which calculates calculation values, and a signal... Agent: Mcginn Intellectual Property Law Group, PLLC