Electricity: motive power systems inventions 10/09

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

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

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

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

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

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

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

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

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

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

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

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

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

20090243530 - Variable voltage output power source for model trains:

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

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

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

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