Electricity: motive power systems inventions 09/07

20070222401 - Variable reluctance fast positioning system and methods: A system is provided for positioning an article. In this regard, one embodiment of the system, among others, can be broadly summarized as follows. The system contains a frame and a series of actuators connected to the frame, where the series of actuators contains at least one armature therein. The... Agent: Sheehan Phinney Bass & Green, PA C/o Peter Nieves

20070222402 - Method and device for controlling a brushless dc motor: A method and a control device for a brushless DC motor, which has an AC/DC inverter supplied by an intermediate direct voltage circuit for feeding the DC motor, a pattern generator for controlling switches of the AC/DC inverter having a variable frequency and phase periodical switch signal pattern and an... Agent: Lerner Greenberg Stemer LLP

20070222403 - Method for producing voltage waveforms in a pwm motor controller of a pm dc brushless motor: A method produces PWM voltage waveforms in a PWM motor controller of a three phase PM DC brushless motor, wherein the motor controller has first, second and third half H-bridge transistor pairs to generate the voltage waveforms to electronically commutate the motor. The first transistor pair is always assigned to... Agent: Delphi Technologies, Inc. Legal Staff - M/c 480-410-202

20070222404 - Controller for motor: A controller for a motor performs field weakening control by changing a phase difference between two rotors, which are concentrically disposed, and by accurately recognizing the phase difference. The controller for a motor includes an actuator and a planetary gear mechanism that change a rotor phase difference on the basis... Agent: Arent Fox PLLC

20070222405 - Controller for motor: A controller for a motor permits efficient energization control according to an operating condition of a motor without depending on a number of revolutions of the motor when operating a motor having two rotors disposed around a rotating shaft. The controller includes a voltage-between-terminals increaser which carries out at least... Agent: Arent Fox PLLC

20070222406 - Controller for motor: A controller for a motor is capable of reducing the amount of energization required to operate a motor under a predetermined condition, the motor having two rotors disposed around a rotating shaft. The controller includes an induced voltage constant command value determiner which determines an induced voltage constant command value... Agent: Arent Fox PLLC

20070222407 - Active vibration control system for hybrid vehicle: In a motor-assisted hybrid vehicle, an active vibration control system suppresses torque fluctuations of an engine without detriment to the response of a static torque. An adaptive notch filter outputs a control signal depending on a harmonic basic signal generated by a basic signal generator from a rotational frequency of... Agent: Arent Fox PLLC

20070222408 - Simplified solid state electric motor drive technique: A simplified solid state electric motor drive technique which may be used with a variable reluctance electric alternator or motor or similar device. The technique comprises the winding of the stator for each phase using two windings rather than the single, in series, winding of a conventional stator winding. A... Agent: Gene R. Woodle

20070222409 - Controller for brushless motor: A controller for a brushless motor generates a rotation force of a rotor by applying a voltage to an armature winding based on a d-axis target voltage Vd*, a q-axis target voltage Vq*, and a detected rotation position of the rotor. The d-axis target voltage Vd* is determined based on... Agent: Jordan And Hamburg LLP

20070216323 - Motor drive apparatus: When a torque command value from an external ECU is within a predetermined variation width, a control unit generates a signal and outputs the signal to a voltage command calculation unit so that electrostatic energy stored in a capacitor is kept at a predetermined threshold value or larger. Based on... Agent: Oliff & Berridge, PLC

20070216325 - Motor drive device and motor drive method: Problems with accuracy reading position detection signal peaks and minute phase differences in the detection current make motor drive control easily susceptible to differences in motor characteristics. The rotor position is determined based on whether or not a terminal difference voltage, which is the difference voltage between the motor terminal... Agent: Ratnerprestia

20070216324 - Demodulation method of resolver output position signal: A demodulation method of a resolver output position signal comprises the steps of: inputting an excitation signal, using a push-pull amplifier circuit to increase fan-out; using a voltage regulator to adjust the amplitude of resolver signals to the same level, for improving resolution; modulating with a subtracter; amplifying the signal... Agent: Banger Shia

20070216326 - Motor speed control systems: A motor speed control system includes a pulse outputting device capable of outputting a pulse each time a motor rotates, a pulse interval determining device capable of determining a pulse interval between the pulses outputted, and a comparative value calculating device capable of obtaining a comparative value as the product... Agent: Oliff & Berridge, PLC

20070216327 - Vehicle drive control system, motor control device and a method for drive control of a vehicle: A vehicle drive control system including a motor brake control device. The motor brake control device causes an AC motor to generate a braking force, and selectively executes a first three-phase (3-phase) short-circuiting mode for simultaneously turning on switching elements of an upper arm of an inverter and a second... Agent: Osha Liang L.L.P.

20070216328 - Inverter apparatus and method of reducing speed of alternating current motor: There is provided an inverter capable of reducing a speed in a short period of time without generating an overcurrent even in a case of an alternating current motor which is easy to be saturated magnetically. A frequency of driving a motor is calculated by using a detecting value constituted... Agent: Sughrue-265550

20070216329 - Motor control apparatus, motor control method, hard disk drive testing apparatus, and storage device manufacturing method: A motor control apparatus that drives and controls a holeless DC motor is disclosed. The motor control apparatus includes a breaking part configured to break the DC holeless motor, a detection part configured to detect whether the DC holeless motor is in a near halt rotation state, and a forced... Agent: Kratz, Quintos & Hanson, LLP

20070216330 - Control device for a closure member of a vehicle: The control device for a closure member of a vehicle according to the present invention comprises: estimated load calculation means (8b) for obtaining an estimated load from a rotation speed, acceleration, and drive voltage of a DC motor (3) for driving a closure member (9); motor torque calculation means (8b)... Agent: Lumen Intellectual Property Services, Inc.

20070216331 - Rotation control device, rotation control method and construction machine: In an electric rotary excavator (construction machine) 1, when earth pressure acts on a rotary body 4 in an opposite direction to an instructed direction of a lever, a control-system changing means 150 of a rotation control device 100 increases a torque output of an electric motor 5 that drives... Agent: Frishauf, Holtz, Goodman & Chick, PC

20070216332 - Method for effecting the movement of a handling device and image processing device: A method for effecting the movement of a handling device with at least one actuating member which can be moved by means of a control device about one or several axes, wherein a) an optically recognizable object and a course of movement is indicated to the control device of the... Agent: Michael J. Striker

20070216333 - Motion controller and system identifying method: A motion controller accurately identifies system constants, such as inertia, viscous friction coefficient, and constant disturbance, without requiring operation, even in cases where viscous friction and/or constant disturbance are present. An identifier includes a time-differentiator for calculating an acceleration detection value afb by time-differentiating a speed detection value Vfb, a... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20070216334 - Feedback control system: A closed loop control system for controlling an actuator operating on a moveable member, includes a control device controlling operation of the actuator, a sensor responsive to a condition such as loading of the moveable member as it is moved by the actuator and adapted to generate a corresponding feedback... Agent: Lowe Hauptman Berner, LLP

20070216335 - Stepping motor controlling device: A stepping motor controlling device according to the present invention includes lead angle computing means which computes a lead angle according to the load torque current deviation of the stepping motor, adding means which adds an angle command to the lead angle to determine a winding exciting angle and voltage... Agent: Birch Stewart Kolasch & Birch

20070216336 - Mutual inductance contactless starter: An inductive contactless starter can be provided for single-phase AC motor, which can be designed to start a compressor motor with a starting capacitor or a common single-phase AC motor. The starter can comprise a current mutual-inductor composed of two primary coils and a secondary coil, a gate capacitor, a... Agent: Knobbe Martens Olson & Bear LLP

20070216339 - Electric power converter: An electric power converter, electric power conversion system and method that, without using a DC-DC converter, uses and allots the electric power of plural power sources while reducing the volume and losses. At least one phase of the motor is connected to plural power sources and generates and synthesizes pulses... Agent: Young & Basile, P.C.

20070216337 - Motor speed estimation system and method using hybrid model reference adaptive system: Motor drives, motor speed controllers, motor speed estimation systems, and methods are presented for controlling motor speed and for estimating motor speed, in which a speed estimate controller provides a rotor speed estimate based on a first error term from a torque-based MRAS component for a first range of motor... Agent: Rockwell Automation, Inc./fay

20070216338 - Power conversion apparatus and method and automobile: An apparatus and method for supplying a polyphase (AC) alternating current motor with driving voltages. A conversion unit is coupled to phases of the polyphase AC motor and includes a plurality of switching devices and includes, in at least one phase, a first switching device between a bus of an... Agent: Young & Basile, P.C.

20070216340 - Method of decelerating alternating current motor and inverter apparatus: To be able to reduce a speed of an alternating current motor by an inverter apparatus by a time period as short as possible and to control an alternating current motor which is easy to be saturated magnetically by a previously set current or lower such that the inverter apparatus... Agent: Sughrue-265550

20070216342 - Vector control apparatus for permanent magnet motor: A vector control apparatus for a permanent magnet motor operated in the region of weak magnet field, wherein when the output voltages of the power converter saturate, the phase error command value represented by the difference between the angular position of the reference axis for control and the angular position... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070216341 - Method and apparatus for pwm control of voltage source inverter: PWM methods and apparatus are provided for loss minimized control of AC motors taking into consideration inverter non-linear limitations. The method comprises providing a voltage to the AC motor based on a switching cycle, adding a duty cycle of a zero vector to each phase leg of the switching cycle... Agent: General Motors Corporation Legal Staff

20070216343 - Electric engine start system with active rectifier: A power converter includes a PWM active rectifier and controller that minimize harmonic ripple currents on the DC link during an engine start mode (first stage) in which power is provided to an AC starter motor. The PWM active rectifier and controller also minimize harmonic currents on AC input lines... Agent: Kinney & Lange, P.A.

20070216344 - Loss minimized pwm for voltage source inverters taking into account inverter non-linearity: A dynamic pulse width modulation (PWM) selection device automatically switches between discontinuous PWM (DPWM) control methods. The PWM selection device comprises a PWM control module. The PWM control module determines a desired pulse width of a switching control signal according to a desired output signal. The PWM control module controls... Agent: General Motors Corporation Legal Staff

20070216345 - Method of driving fan motor: A fan motor is driven under a pulse width modulation (PWM) control. PWM signals to be supplied to a circuit for driving the fan motor are formed from carrier waves having a specified frequency and a duty ratio of the PWM control. Rotational speed of the fan motor is increased... Agent: Posz Law Group, PLC

20070210728 - Method and system for adaptively controlling a hybrid vehicle: A method and system for adaptively controlling a hybrid vehicle comprises a recorder for recording a historical load or duty cycle of vehicle during or after operation of the vehicle. A classifier classifies the historical load in accordance with a load category. A controller assigns at least one of a... Agent: Deere & Company

20070210729 - Vehicle drive system and vehicle provided with the same: A rotor is provided with slits each of which serves as a flux barrier blocking a magnetic flux. A direction shown by an arrow is a forward direction along which the rotor rotates when a vehicle moves forward. Each of the slits has a width tapering down from a trailing... Agent: Oliff & Berridge, PLC

20070210730 - Over-unity energy motor-generator: An over-unity motor-generator is provided. The over-unity motor-generator includes a motor circuit unit, a motor-generator unit for generating an electric energy by rotating by an electric energy, and a generator circuit unit for commutating an alternating current generated from the motor-generator unit and outputting a direct current. The motor-generator unit... Agent: Keusey, Tutunjian & Bitetto, P.C.

20070210731 - Motor control apparatus: In a motor control apparatus including a position detecting portion (1B) of a motor (18) for driving a mechanism a moment of inertia of which is unknown, a speed calculating portion (1C), a position control portion (15) for outputting a speed reference by inputting a difference between a position reference... Agent: Sughrue Mion, PLLC

20070210732 - Method for starting a sensorless, electronically commutatable direct current motor: A method for starting a sensorless, electronically commutatable direct current motor, having a permanent-magnetically excited rotor in which the stator carries a three-phase stator winding, whose regulated supply of current from a direct voltage source is already made possible from the standstill state. To that end, by the control device... Agent: Ronald E. Greigg Greigg & Greigg P.l.l.c.

20070210734 - Air treatment apparatus having a voltage control device responsive to current sensing: An air treatment apparatus that includes an electrode assembly, a voltage supply, a current sensing device operably coupled to the electrode assembly, and a voltage control device coupled the current sensing device and the voltage supply. The voltage control device is configured to regulate the level of voltage based on... Agent: Bell, Boyd & Lloyd LLP

20070210733 - Electronically commutated motor and control system: A power tool having an electronically commutated DC motor capable of providing various operating modes ranging from a maximum efficiency operating mode to a maximum power operating mode. The motor has a rotor having permanent magnets mounted in recesses in a back iron of the rotor. In one embodiment the... Agent: Harness, Dickey & Pierce, P.L.C

20070210735 - System for energy regeneration in a mobile device: A mobile device comprising: a hard disk; a motor for spinning the hard disk; and a system for regenerating energy using the hard disk. The system for regenerating energy using the hard disk may include: a switch connected to the motor such that when the switch is in a first... Agent: Bereskin And Parr

20070210736 - Power supply apparatus: A power supply unit includes an input-side rectifying circuit (4), an inverter (8) and an output-side rectifying circuit (12), which include power semiconductor devices. The power supply unit is powered during a powering period, and the powering is interrupted during a pausing period. The powering and pausing periods alternate. A... Agent: Duane Morris, LLPIPDepartment

20070210737 - Window convenience and security system: A window convenience and security system operates to change the position of a window or door in a structure in response to control information such as detected weather conditions, detected hazardous airborne particles, presence of people, stored time schedules, signals transmitted over a cellular network or voice using voice recognition... Agent: Peter J. Phillips Cooper & Dunham LLP

20070210739 - Leg joint assist device of legged mobile robot: In a state wherein a solenoid switching valve in a gas passage in communication with air chambers is closed, an assist device produces an assisting driving force by compression or expansion of a gas as a knee joint (specific joint) of a leg bends or stretches, and applies the produced... Agent: Rankin, Hill, Porter & Clark LLP

20070210738 - Torque-position transformer for task control of position controlled robots: Torque control capability is provided to a position controlled robot by calculating joint position inputs from transformation of the desired joint torques. This is based on calculating the transfer function 1/E(s), which relates the desired joint torque to joint position. Here E(s) is a servo transfer function D(s) or an... Agent: Lumen Intellectual Property Services, Inc.

20070210740 - Controller: A controller, for force-controlling a drive source of a controlled object, having a position control circuit inside a force control circuit in order to define a relative position of the controlled object to a workpiece, and a contact force occurred between the workpiece and the controlled object, the controller including... Agent: Lowe Hauptman Berner, LLP

20070210741 - Driver for induction motor and method of driving the same: c

20070205731 - Methods and systems for dynamically braking an electronically commutated motor: A method for applying braking to an electronically commutated motor that includes a switching circuit electrically coupled to one or more windings is described. The method comprises operating the switching circuit to remove power from the windings of the electronically commutated motor, determining when the rotation of a rotor of... Agent: Patrick W. Rasche Armstrong Teasdale LLP

20070205735 - Control device for a hybrid electric vehicle: A hybrid electric vehicle is capable of transmitting driving forces of an engine and an electric motor to driving wheels through an automatic transmission and of releasing mechanical connection between the engine and the transmission by a clutch. A torque control unit switches between deceleration implemented only by the motor... Agent: Jacobson Holman PLLC

20070205734 - Electric power steering apparatus: A torque detection portion includes a first arm having a detection coil L1 and a resistor R1, and a second arm having a detection coil L2 and a resistor R2. When a test mode is set, a reference voltage Vref having an abnormal value is outputted to a monitoring portion... Agent: Sughrue-265550

20070205733 - Electric power steering device: The present invention includes a control part for controlling switching elements on diagonal lines in the upper and lower stage of an H bridge circuit respectively by different duty ratios based on a steering torque exerted on a steering system, and an electric power supply source for supplying an electric... Agent: Sughrue Mion, PLLC

20070205732 - Methods and systems for emulating an induction motor utilizing an electronically commutated motor: A method for emulating induction motor operation using an electronically commutated motor (ECM) is described herein. The method includes receiving, at the ECM, a desired operating torque, accessing induction motor operating characteristics stored within the ECM, and calculating a new torque demand if a speed associated with the desired operating... Agent: Patrick W. Rasche Armstrong Teasdale LLP

20070205736 - Encoder signal analysis system for high-resolution position measurement: An apparatus and method for identifying the position of a magnetic shaft are provided. N field sensors are adjacently positioned at fixed locations relative to the shaft's periodic field, corresponding to 180/N relative phase shifts. A table provides N>2 predetermined signal models and a pre-identified position associated with each. An... Agent: Goodwin Procter L.l.p

20070205737 - Control circuit and method of controlling rotation frequency of spindle in optical disc drive for reducing frequency difference of output signals respectively corresponding to different disc rotation modes: A control circuit and a control method of controlling a rotation frequency of a spindle in an optical disc drive, the control circuit comprising: a spindle controller, electrically coupled to the spindle, for driving the spindle to rotate an optical disc according to a rotation control signal; a detector, electrically... Agent: North America Intellectual Property Corporation

20070205738 - Controller for electric motor: A controller including a learning control unit for determining learning data based on a positional deviation between a target-position command commanding superimposed-type motion including repetitive motion and a positional fed-back variable obtained from an output portion of an electric motor; and an operation control section for controlling the electric motor... Agent: Drinker Biddle & Reath (dc)

20070205739 - Multi-mode manipulator arm and drive system: The present invention relates to a manipulator arm and drive system that can be operated in multiple modes, including an on or off mode, referred to herein as a “rate mode” or a spatially correspondent (“SC”) mode. The multi-mode manipulator arm and drive system of the present invention can be... Agent: Duane Morris LLP

20070205740 - Method of automatically setting vibration suppression filter and automatic setting apparatus for vibration suppression filter: In a method of automatically setting the vibration suppression filter, when a vibration detection portion detects a vibration A2, a state variable frequency analysis portion analyzes the frequencies of data from a state variable trace portion to calculate a vibration frequency A3, and the frequency characteristics of the vibration suppression... Agent: Sughrue Mion, PLLC

20070205741 - Controller for an electric vehicle and driving apparatus for the electric vehicle: The present invention provides a controller and driving apparatus for an electric vehicle, which enables a motor to steadily output torque even when there is an increase in the rotation speed of an internal combustion engine that drives a generator. A motor control unit includes a voltage/current command generator F10.... Agent: Crowell & Moring LLP Intellectual Property Group

20070205742 - Inverter device: A running pattern of one cycle in a preset industrial machine is observed by a current detector and a temperature rise value estimating unit that are additionally provided in a traditional inverter device. The temperature rise value estimating unit derives a maximum temperature rise estimate value for each constituent element... Agent: Rabin & Berdo, PC

20070205743 - Motor control device and motor control method: The present invention employed a motor control device including: current sensors which detect currents in each phase of a three-phase motor; a coordinate conversion device which computes a d-axis actual current and a q-axis actual current in dq-coordinates from phase currents of three phases based on detection values of the... Agent: Westerman, Hattori, Daniels & Adrian, LLP