Electricity: motive power systems inventions 10/08

20080258654 - Combination pneumatic and electric linear actuator: A linear actuator system can move a probe along a substantially linear path. The linear actuator system can have a housing with a magnet mounted in the housing creating a magnetic field. An electric coil piston can be slidably mounted in the housing. The coil piston can have a coil... Agent: Morrison & Foerster LLP

20080258655 - Hybrid motor boost system and methods: An electrical system for a vehicle includes a power source providing electrical power to a first and a second electrical motor. Each motor has two or more windings, and each winding has a first end and a second end. A boost link such as a battery or capacitor is configured... Agent: General Motors Corporation Legal Staff

20080258656 - Control apparatus for electric vehicles: In a hybrid vehicle control apparatus, a motor control unit executes input power control on a MG unit to stabilize a system voltage. This input power control for MG unit is executed independently from torque control on an AC motor so that the input power control and the torque control... Agent: Nixon & Vanderhye, PC

20080258657 - Tuning dc brushless motors: A method of tuning a DC brushless motor, wherein measurement of back EMF voltage is used to detect changes in the torque requirements caused by variation in the operating conditions of the DC brushless motor, the method including varying the timing of the driving signals to the motor to compensate... Agent: Henricks Slavin And Holmes LLP Suite 200

20080258658 - Controller for a multi-phase brushless dc motor: Control of rotational speed of a direct current multi-phase brushless motor is provided using an apparatus and method that works at low speed but does not depend upon Hall effect sensors. An apparatus for accelerating rotation of the motor shaft has a power stage circuit coupled to a back Electromotive... Agent: Shook, Hardy & Bacon LLP Intellectual Property Department

20080258659 - Electronically commutated motor & method for controlling the same: The invention relates to an electronically commutated motor (10) and to a method of controlling an electronically commutated motor (10). In order to reduce commutation noise, it is proposed to influence the working range of the power-stage transistors (20, 22) with the aid of a component (48), in such a... Agent: Ware Fressola Van Der Sluys & Adolphson, LLP

20080258661 - Inverter topology for an electric motor: An inverter is provided for controlling application of voltage from a power source to a motor having a plurality of windings. The inverter includes a first set of one or more switching elements and a second set of one or more switching elements. The first and second sets of one... Agent: General Motors Corporation Legal Staff

20080258660 - Method for detecting initial magnetic pole position in permanent-magnet motor: A method for detecting initial magnetic pole position in permanent-magnet motor first determines a PWM pulse width Dt applied to stator, where the PWM pulse width Dt depends on motor parameters. Six voltage vectors are then successively applied to the stators and the associated current rising time are calculated. The... Agent: Hdsl

20080258662 - Power conversion system and power conversion control method: A power conversion system includes first and second voltage sources for driving a multiple-phase AC motor and a control unit. The control unit is configured to compute first and second output voltage command values used to drive the multiple-phase AC motor based on a first output voltage command vector corresponding... Agent: GlobalIPCounselors, LLP

20080258663 - Brushed motor controller using back emf for motor speed sensing, overload detection and pump shutdown, for bilge and other suitable pumps: A method and apparatus are provided for providing one or more brushed motor control signals for controlling the operation of a brushed motor, including a signal for disconnecting the power applied to the brushed motor so that the brushed motor can provide a brushed motor signal containing information about a... Agent: Ware Fressola Van Der Sluys & Adolphson, LLP

20080258665 - Door drive control apparatus and door drive control method: A door drive control apparatus capable of an accurate detection, without misidentifying an inverse overrun condition, and a door drive control method that improves safety. The door drive control apparatus includes a power converter that supplies power to a door drive linear motor, and operates the power converter by feedback... Agent: Rabin & Berdo, PC

20080258664 - Fan circuit with a fan speed control circuit: A fan speed control circuit is used for controlling rotation speed of a fan. The fan speed control circuit receives a pulse width modulation (PWM) signal from a system and comprises a programmable control unit and a current control unit. The programmable control unit receives the PWM signal, is connected... Agent: PCe Industry, Inc. Att. Cheng-ju Chiang

20080258666 - Method of controlling a motorized window treatment: A method of controlling a motorized window treatment provides for continued operation of the motorized window treatment during an overload condition, a low-line condition, or an electrostatic discharge (ESD) event. The motorized window treatment is driven by an electronic drive unit having a motor, a motor drive circuit, a rotational... Agent: Lutron Electronics Co., Inc. Mark E. Rose

20080258667 - Test module for motor control center subunit: A system and method are provided for coordinating the installation and removal a motor control center subunit with the power connection and interruption thereof A system of interlocks and indicators causes an operator to install a motor control center subunit into a motor control center, and connect supply and control... Agent: Ziolkowski Patent Solutions Group, Sc (eaton)

20080258668 - Stator position adjustment method, motor drive device and stator position adjustment system: A stator position adjustment method for a motor drive device that includes a motor case, a rotor shaft supported by the motor case in order to rotate a rotor inside the motor case, and a stator disposed at an outer circumference of the rotor concentrically with the rotor and having... Agent: Oliff & Berridge, PLC

20080258669 - Walking robot by using passive changes in joint angles and control method thereof: In a robot with two or more leg links having ankle joint respectively and pivotably linked to a torso, the robot walks naturally by making the ankle joint of a grounded leg link rotate freely by using passive movement. A controller executes controlling operation of calculating target joint angles of... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20080258670 - Open-loop torque control on joint position-controlled robots: A joint of a robot is controlled by a torque command. The joint has a position controller with a position feedback loop. The torque command is received for the joint, and a velocity feedforward command is determined for realizing the torque command using the position controller. The velocity feedforward command... Agent: Honda/fenwick

20080258671 - Control device having excessive-error detection function: Abnormality of a position error is quickly detected in a control device in which feedforward control is introduced. A position error estimation processing unit calculates a position error estimation value Err, for example, from the equation V/PG×(1−α) (V: first order differential of position command, PG: position gain in position controller,... Agent: Lowe Hauptman Ham & Berner, LLP

20080258672 - Method of starting a synchronous motor with a brushless dc exciter: A starting method and system for a motor where the motor may be started as an induction motor by applying a magnetizing current to build flux through the stator, with the field current set at the maximum permissible exciter stator current (i.e., the current that will cause rated no-load current... Agent: Siemens Corporation Intellectual Property Department

20080258673 - Method and system for pulse position scheduling in electric drives: Method and system are provided for controlling an alternating current (AC) motor via an inverter. The method includes selecting a pulse sequencing method based on a modulation index of the inverter, and providing a voltage to the AC motor based on the pulse sequencing method. The system includes an inverter... Agent: General Motors Corporation Legal Staff

20080258654 - Combination pneumatic and electric linear actuator: A linear actuator system can move a probe along a substantially linear path. The linear actuator system can have a housing with a magnet mounted in the housing creating a magnetic field. An electric coil piston can be slidably mounted in the housing. The coil piston can have a coil... Agent: Morrison & Foerster LLP

20080258655 - Hybrid motor boost system and methods: An electrical system for a vehicle includes a power source providing electrical power to a first and a second electrical motor. Each motor has two or more windings, and each winding has a first end and a second end. A boost link such as a battery or capacitor is configured... Agent: General Motors Corporation Legal Staff

20080258656 - Control apparatus for electric vehicles: In a hybrid vehicle control apparatus, a motor control unit executes input power control on a MG unit to stabilize a system voltage. This input power control for MG unit is executed independently from torque control on an AC motor so that the input power control and the torque control... Agent: Nixon & Vanderhye, PC

20080258657 - Tuning dc brushless motors: A method of tuning a DC brushless motor, wherein measurement of back EMF voltage is used to detect changes in the torque requirements caused by variation in the operating conditions of the DC brushless motor, the method including varying the timing of the driving signals to the motor to compensate... Agent: Henricks Slavin And Holmes LLP Suite 200

20080258658 - Controller for a multi-phase brushless dc motor: Control of rotational speed of a direct current multi-phase brushless motor is provided using an apparatus and method that works at low speed but does not depend upon Hall effect sensors. An apparatus for accelerating rotation of the motor shaft has a power stage circuit coupled to a back Electromotive... Agent: Shook, Hardy & Bacon LLP Intellectual Property Department

20080258659 - Electronically commutated motor & method for controlling the same: The invention relates to an electronically commutated motor (10) and to a method of controlling an electronically commutated motor (10). In order to reduce commutation noise, it is proposed to influence the working range of the power-stage transistors (20, 22) with the aid of a component (48), in such a... Agent: Ware Fressola Van Der Sluys & Adolphson, LLP

20080258661 - Inverter topology for an electric motor: An inverter is provided for controlling application of voltage from a power source to a motor having a plurality of windings. The inverter includes a first set of one or more switching elements and a second set of one or more switching elements. The first and second sets of one... Agent: General Motors Corporation Legal Staff

20080258660 - Method for detecting initial magnetic pole position in permanent-magnet motor: A method for detecting initial magnetic pole position in permanent-magnet motor first determines a PWM pulse width Dt applied to stator, where the PWM pulse width Dt depends on motor parameters. Six voltage vectors are then successively applied to the stators and the associated current rising time are calculated. The... Agent: Hdsl

20080258662 - Power conversion system and power conversion control method: A power conversion system includes first and second voltage sources for driving a multiple-phase AC motor and a control unit. The control unit is configured to compute first and second output voltage command values used to drive the multiple-phase AC motor based on a first output voltage command vector corresponding... Agent: GlobalIPCounselors, LLP

20080258663 - Brushed motor controller using back emf for motor speed sensing, overload detection and pump shutdown, for bilge and other suitable pumps: A method and apparatus are provided for providing one or more brushed motor control signals for controlling the operation of a brushed motor, including a signal for disconnecting the power applied to the brushed motor so that the brushed motor can provide a brushed motor signal containing information about a... Agent: Ware Fressola Van Der Sluys & Adolphson, LLP

20080258665 - Door drive control apparatus and door drive control method: A door drive control apparatus capable of an accurate detection, without misidentifying an inverse overrun condition, and a door drive control method that improves safety. The door drive control apparatus includes a power converter that supplies power to a door drive linear motor, and operates the power converter by feedback... Agent: Rabin & Berdo, PC

20080258664 - Fan circuit with a fan speed control circuit: A fan speed control circuit is used for controlling rotation speed of a fan. The fan speed control circuit receives a pulse width modulation (PWM) signal from a system and comprises a programmable control unit and a current control unit. The programmable control unit receives the PWM signal, is connected... Agent: PCe Industry, Inc. Att. Cheng-ju Chiang

20080258666 - Method of controlling a motorized window treatment: A method of controlling a motorized window treatment provides for continued operation of the motorized window treatment during an overload condition, a low-line condition, or an electrostatic discharge (ESD) event. The motorized window treatment is driven by an electronic drive unit having a motor, a motor drive circuit, a rotational... Agent: Lutron Electronics Co., Inc. Mark E. Rose

20080258667 - Test module for motor control center subunit: A system and method are provided for coordinating the installation and removal a motor control center subunit with the power connection and interruption thereof A system of interlocks and indicators causes an operator to install a motor control center subunit into a motor control center, and connect supply and control... Agent: Ziolkowski Patent Solutions Group, Sc (eaton)

20080258668 - Stator position adjustment method, motor drive device and stator position adjustment system: A stator position adjustment method for a motor drive device that includes a motor case, a rotor shaft supported by the motor case in order to rotate a rotor inside the motor case, and a stator disposed at an outer circumference of the rotor concentrically with the rotor and having... Agent: Oliff & Berridge, PLC

20080258669 - Walking robot by using passive changes in joint angles and control method thereof: In a robot with two or more leg links having ankle joint respectively and pivotably linked to a torso, the robot walks naturally by making the ankle joint of a grounded leg link rotate freely by using passive movement. A controller executes controlling operation of calculating target joint angles of... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20080258670 - Open-loop torque control on joint position-controlled robots: A joint of a robot is controlled by a torque command. The joint has a position controller with a position feedback loop. The torque command is received for the joint, and a velocity feedforward command is determined for realizing the torque command using the position controller. The velocity feedforward command... Agent: Honda/fenwick

20080258671 - Control device having excessive-error detection function: Abnormality of a position error is quickly detected in a control device in which feedforward control is introduced. A position error estimation processing unit calculates a position error estimation value Err, for example, from the equation V/PG×(1−α) (V: first order differential of position command, PG: position gain in position controller,... Agent: Lowe Hauptman Ham & Berner, LLP

20080258672 - Method of starting a synchronous motor with a brushless dc exciter: A starting method and system for a motor where the motor may be started as an induction motor by applying a magnetizing current to build flux through the stator, with the field current set at the maximum permissible exciter stator current (i.e., the current that will cause rated no-load current... Agent: Siemens Corporation Intellectual Property Department

20080258673 - Method and system for pulse position scheduling in electric drives: Method and system are provided for controlling an alternating current (AC) motor via an inverter. The method includes selecting a pulse sequencing method based on a modulation index of the inverter, and providing a voltage to the AC motor based on the pulse sequencing method. The system includes an inverter... Agent: General Motors Corporation Legal Staff

20080252238 - Motor drive circuit: A pulse generation unit generates a PWM signal whose duty ratio changes according to a target torque of a motor. A back electromotive detection circuit compares a back electromotive voltage generated at a coil of the motor with a middle point voltage of the coil, and outputs a back electromotive... Agent: Cantor Colburn, LLP

20080252239 - Method capable of controlling brushless dc motor: A method capable of controlling brushless DC motor detects the magnetic pole positions of the rotor with a Hall component to produce a Hall signal correspondingly, generates a PWM signal based on an external control signal with a PWM generator, controls a switch circuit based on the PWM signal and... Agent: G. Link Co., Ltd.

20080252240 - Motor drive circuit and method: A motor drive method which supplies a drive current in a pulse form to a multiphase motor, to drive the motor. The motor drive method includes the steps of: generating a pulse signal having a duty ratio in accordance with torque, alternately repeating an ON time-period and an OFF time-period... Agent: Cantor Colburn, LLP

20080252242 - Apparatus and method for driving rotary machine: A motor driving apparatus has a loss-of-synchronism monitoring circuit that monitors the rotation of a rotary machine such as a brushless DC motor to detect a sign of transition to a state of loss of synchronism. When the sign is detected, an energization control circuit temporarily stops driving of the... Agent: Posz Law Group, PLC

20080252241 - Sensorless driving method for brushless dc motor: A sensorless driving method for a brushless DC motor is provided. The time for the motor to rotate an electrical angle 60° is obtained by alternatively counting the occurrences of zero crossings with two counters and comparing the counted values, and the motor is delayed an electrical angle of 30°,... Agent: Jianq Chyun Intellectual Property Office

20080252243 - Ad conversion control circuit and related arts: A selector selects an analog signal group to be used for PWM control out of a plurality of analog signals output by a PWM controlled load. An AD converter AD converts the analog signal group and generates a digital signal group that becomes control data for duty ratio setting in... Agent: Mcdermott Will & Emery LLP

20080252244 - Sensorless speed detection of a pm brushless motor with phase terminals shorted: A method of determining the speed of a spinning sensorless brushless motor driven by an inverter when the phase terminals of the motor are shorted including determining a voltage related to the voltage developed in a phase leg of the inverter; from the determined voltage, determining the direction of current... Agent: Ostrolenk Faber Gerb & Soffen

20080252245 - Motor driving circuit having low current consumption under a standby mode: A power cutter, an oscillator, a counter, a S-R latch, and a Hall bias are further disposed inside a DC motor driving circuit so that current consumption of the DC motor driving circuit is reduced significantly under a standby mode. When the counter detects that a received pulse width modulation... Agent: North America Intellectual Property Corporation

20080252246 - Detection method for an electrical polyphase machine: The recognition of a polyphase machine (1) connected to a converter (10) is suggested in order to adapt the converter (10) to the connected machine (1) prior to an active productive operation. The following is arranged for. Connecting of the polyphase machine with its several electric phases to the converter... Agent: Hunton & Williams LLP Intellectual Property Department

20080252247 - Quadruped walking robot: A quadruped walking robot 1 according to the present invention comprises: a horizontal swivel portion 4 disposed so as to freely swivel in the horizontal direction in the main body portion 2; a horizontal swivel driving portion 5 for driving and turning the horizontal swivel portion 4 in the horizontal... Agent: Sughrue Mion, PLLC

20080252248 - Device and method for calibrating the center point of a tool mounted on a robot by means of a camera: A device and a method for tool center point calibration of an industrial robot. The device is intended to calibrate an industrial robot with respect to a tool mounted on the robot. The device includes a camera designed to take a plurality of images of at least part of the... Agent: Venable LLP

20080252249 - Driver for an inflatable rotating exhibit: A driver for an inflatable rotating exhibit is mounted inside an inflatable rotating exhibit having a transparent inflatable body and a rotating body and has a rotating assembly and a reverse-rotation preventer. The rotating assembly connects to and rotates the rotating body, has a synchronous motor. The synchronous motor rotates... Agent: Hershkovitz & Associates, LLC

20080252250 - Motor control device: A motor control device has: a motor current detecting portion for detecting, based on a current flowing between an inverter that drives a three-phase motor and a direct-current power supply, a motor current flowing through the motor; a specified voltage value producing portion for producing, based on the motor current,... Agent: Ndq&m Watchstone LLP

20080246421 - Actuator arrangement: An actuator arrangement comprises a plurality of linearly extendable actuators arranged to be driven by a common electrically driven motor, each actuator, being provided with limit stops to limit extension and/or retraction thereof, wherein the limit stops of the actuators are positioned such that a first one of the actuators... Agent: Andrus, Sceales, Starke & Sawall, LLP

20080246422 - Method for controlling a mechanically communicated electric motor: A method for controlling a mechanically commutated electric motor, wherein the rotational angle of the output of said motor is determined by means of detection of the change in back electromotive force, when the electric motor commutates, and wherein the power supply to the electric motor is halted after a... Agent: Browdy And Neimark, P.l.l.c. 624 Ninth Street, Nw

20080246423 - Drive regenerative control system: Provided is a drive regenerative control system of a drivee with a motor superior in torque and weight balance and suitable for miniaturization as the drive source. In a drive regenerative control system having a drive source with an electric motor, a drivee, a control circuit having a drive control... Agent: Harness, Dickey & Pierce, P.L.C

20080246424 - Brushless motor: The brushless motor has a first and second drive member. The first drive member is equipped with M phase coil groups each having N electromagnetic coils where M is an integer of 1 or greater and N is an integer of 1 or greater. The second drive member has a... Agent: Harness, Dickey & Pierce, P.L.C

20080246425 - Controller for motor: In a predetermined operating state of an electric motor 3 of an axial air-gap type, control is carried out as follows. A phase difference between an electric current supplied to an armature winding 13a of one of the stators 12a and an electric current supplied to an armature winding 13b... Agent: Arent Fox LLP

20080246426 - Control system for multiphase rotary machines: A control system aims at converting, via a switching circuit, a direct current voltage into an alternating current voltage to be applied to multiphase windings of a multiphase rotary machine to thereby control rotation of the multiphase rotary machine. In the control system, a command voltage determiner determines a command... Agent: Nixon & Vanderhye, PC

20080246427 - Electromechanical drive system, in particular for progressive cavity pumps for oil wells: c

20080246428 - Industrial robot: A robot arm 3 includes a base-side arm component 11, an intermediate arm component 12, and a tip-side arm component 13. The intermediate arm component 12 is divided at an axially intermediate position into a base-side part 20 and a tip-side part 21, which are connected so as not to... Agent: Studebaker & Brackett PC

20080246429 - Controller of electric motor: Therefore, the controller of the electric motor (3) of the axial air-gap type including a rotor (11) having a permanent magnet, a first stator (12a) and a second stator (12b) oppositely arranged through the rotor (11) in a rotation axis direction of the rotor (11), and armature windings (13a, 13b)... Agent: Arent Fox LLP

20080246430 - Electric vehicle drive apparatus: In an electric vehicle drive apparatus having an electric motor and a motor drive device, the electric motor having a stator, a rotor and a moving mechanism capable of changing a relative distance between the stator and the rotor to vary an effective magnetic flux of the motor, the motor... Agent: Macpherson Kwok Chen & Heid LLP

20080246431 - Apparatus and method of driving compressor: Disclosed herein are an apparatus and method for driving a compressor, which are capable of being suitably used for driving a refrigeration system such as a refrigerator with high efficiency and low noise. The compressor driving apparatus including a motor and a compressor driven by the motor includes an inverter... Agent: Staas & Halsey LLP

20080238346 - Substrate splitting apparatus and a method for splitting a substrate: A substrate splitting apparatus and a method for splitting a substrate using the substrate splitting apparatus are provided. The substrate splitting apparatus includes a servo motor, a transmission device, a substrate breaking bar, and a stage. One end of the transmission is directly or indirectly coupled to the servo motor... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20080238347 - Motor control device: A motor control device includes at least one operating unit that is provided corresponding to at least one motor to operate the at least one motor, and a control unit that, each time at least one control cycle arrives in which the at least one motor is operated, sets a... Agent: Baker Botts LLP C/o Intellectual Property Department

20080238348 - Rotary, limited rotation bi-directional, direct current actuator: An actuator (20) comprises a rotor (22); an electromagnetic circuit (24) configured to produce bidirectional torque on the rotor; and, a rotation limitation assembly (26). The rotor (22) comprises a rotor shaft and plural magnets (80) affixed to the rotor shaft. In an example embodiment the rotation limitation assembly (26)... Agent: Nixon & Vanderhye, PC

20080238349 - Method and circuit for controlling motor and brushless motor system using the same: A method and a circuit for controlling a motor and a brushless motor using the same are provided. The brushless motor includes three phase coils, wherein the first terminals of all the phase coils are coupled to a common node. The method includes following steps: among the above-mentioned three phase... Agent: Jianq Chyun Intellectual Property Office

20080238350 - Single phase motor driving device: A device for driving a single phase motor is provided. The device controls the rotation of the single phase motor according to at least a control signal. The single phase motor driving device includes a control apparatus and a detection apparatus. The control apparatus detects the rotation or stopped rotation... Agent: Joe Mckinney Muncy

20080238351 - Motor control system: A motor control system in which one numerical control device controls a first-type amplifier without a DSP and a second-type amplifier with a DSP, and the cost of which has been reduced by reducing the number of interface circuits (serial bus control circuits) to be provided in the numerical control... Agent: Lowe Hauptman Ham & Berner, LLP

20080238352 - Operator-control device for a machine: A machine includes an operator seat and an armrest adjacent the operator seat. The machine may also include a control system, which may include a control handle extending at least partially upward from the armrest. The control system may also include a force feedback device drivingly connected to the control... Agent: Caterpillar/finnegan, Henderson, L.L.P.

20080238353 - Image forming apparatus and method: An image forming apparatus including a stepper motor, a component attached to the stepper motor, and a controller to control the stepper motor. The controller controls the stepper motor to be accelerated or decelerated, at driving frequencies that do not match a resonant frequency, in order to avoid a resonance... Agent: Stein, Mcewen & Bui, LLP