Electricity: motive power systems inventions 03/08

20080067960 - Unconnected motor, drive control device thereof, and electric power steering device using drive control device of unconnected motor: A drive control device of an unconnected motor capable of resolving power shortage and increasing motor output without using a boost circuit, and an electric power steering device using the unconnected motor. The drive control device comprises an unconnected motor (12) having a rotor in which permanent magnets are allocated... Agent: Crowell & Moring LLP Intellectual Property Group

20080067961 - Sensorless start-up method for driving a brushless dc motor: At first, a plurality of detection modes are applied in sequence to a brushless DC motor, such that with respect to each of the detection modes a composite magnetic field generated by a motor current flowing through motor coils points in a different direction. Then, each of peak values of... Agent: North America Intellectual Property Corporation

20080067962 - Hvac system and method for over the road motor coaches: A method of using an externally powered HVAC system for an over-the-road motor coach includes coupling the HVAC system to an external shore power source at a temporary stop location for the over-the-road motor coach while the over-the-road motor coach is parked and vehicle engine is turned off; receiving electrical... Agent: Procopio, Cory, Hargreaves & Savitch LLP

20080067963 - Non-intrusive method for extrapolating an internal stator temperature: A method for non-intrusive determination of an internal temperature of a given area of an electrical machine stator, comprises obtaining a temperature gradient between an internal wall of the stator and an external wall of the stator, obtaining temperature measurements at locations on the external wall of the stator, and... Agent: Ogilvy Renault LLP

20080067964 - Rotation control apparatus and method, and electronic device wherein the rotation control apparatus can be used: A technology for correctly detecting a rotating position of a rotator at the time of rotation start. A rotation control apparatus controls rotation of a motor, which includes a stator provided with a plurality of coils and a rotor having magnetism. At the time of detecting a position of the... Agent: Cantor Colburn, LLP

20080067965 - Electronically controlled electric motor: A system for controlling an electric motor comprises, in one embodiment, an encoder; a central processor in communication with said encoder; a module processor in communication with said central processor; feedback circuitry in communication with said module processor, wherein said encoder is an electronic device that provides rotor and stator... Agent: Morgan Lewis & Bockius LLP

20080067966 - Direct drive robotic manipulator: A direct drive robotic manipulator is provided which includes a plurality of segments that are rotatably coupled with respect to one another. A plurality of spindles connects the segments for relative rotation therebetween, and a plurality of direct drive assemblies is further coupled to the plurality of spindles. Each direct... Agent: Ostrolenk Faber Gerb & Soffen

20080067967 - Stage apparatus and lithographic apparatus: A stage apparatus and a lithographic apparatus comprising such a stage apparatus are described. The stage apparatus includes an electromagnetic motor arranged to displace an object table, an electromagnetic actuator configured to position the object table and a device configured to provide a current to the stage apparatus such that,... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080067968 - Identifying and compensating force-ripple and side-forces produced by linear actuators: Methods are disclosed for operating at least one commutated actuator (generally termed a “linear actuator”) while compensating for error-inducing phenomena such as force-ripple and side-force. An exemplary method includes determining a set of commutation equations that substantially provide desired forces for the actuator in one or more directions. A map... Agent: Klarquist Sparkman, LLP

20080067969 - Stepping motor driving apparatus and stepping motor driving method: A stepping motor driving apparatus includes a detector that detects a current supplied to a winding included in the stepping motor, a first offset adding section that adds an offset to the output of the detector, an amplifier that amplifies the output of the first offset adding section, a reference... Agent: Ratnerprestia

20080067970 - Induction motor controller: An induction motor controller that may include three phase paths leading from a power input to a power output, a solid-state switching device interposed between the power input and the power output on each of the three phase paths, a voltage sensor coupled to two of the phase paths between... Agent: Rockwell Automation, Inc./(fy)

20080067971 - Induction motor controller: An induction motor controller that may include three phase paths leading from a power input to a power output, a solid-state switching device interposed between the power input and the power output on each of the three phase paths, a voltage sensor coupled to two of the phase paths between... Agent: Rockwell Automation, Inc./(fy)

20080061719 - System and method for establishing a reference angle for controlling a vehicle rotational closure system: A control module for controlling a rotational closure system of a vehicle. The control module may include a printed circuit board having an electronic circuit disposed thereon. The electronic circuit may be used to control a rotational closure system of the vehicle. A header may be connected to the printed... Agent: Patton Boggs LLP

20080061720 - Window opening and closing controller: A window opening and closing controller for stably detecting jamming without having any influence on jamming load even when power voltage is changed is to be provided. In a window opening and closing controller for detecting jamming of a foreign substance on the basis of a comparing result of a... Agent: Osha Liang L.L.P.

20080061721 - Method and apparatus for safe torque limiting: A method for safely limiting the torque of a frequency-converter-fed three-phase motor operated under field-oriented control (controlled torque) is disclosed. Actual phase current values of the three-phase motor are used to calculate a sum current signal on two channels which is checked for a sum current value of zero. A... Agent: Henry M. Feiereisen Henry M. Feiereisen, LLC

20080061722 - Intermittent wiper control device: An intermittent windshield wiper control device for use with antique or historical cars. The control device includes a user actuator mechanism, microprocessor circuitry, a potentiometer system, and a relay system. User movement of the actuator mechanism is translated to the potentiometer system to vary an output therefrom. The microprocessor circuitry... Agent: Dicke, Billig & Czaja

20080061723 - Signal processing device, velocity detecting device and servo mechanism: A driving velocity of a motor is detected by processing a position information signal output from a sensor in accordance with a driving position of a motor. The signal processing device includes a position information signal processor (410) that processes the position information signal and calculates driving velocity information of... Agent: Dla Piper US LLP

20080061724 - Position detection device for permanent magnetic machines: The invention indicates a correct one of multiple rotor positions. For example, the invention can determine, in a PM machine, which of two possible positions a rotor is in when the position is known only within ±π radians. If the actual rotor position is known to be one of ω... Agent: Proskauer Rose LLP

20080061725 - Type of stepper motor driver integrated circuit: This invention discloses a type of stepper motor driver integrated circuit, comprising of a control logic circuit module and a connected stepper motor driver circuit module. The outputs, in groups of two, of the stepper motor driver circuit module are connected to the two ends of coil windings in the... Agent: Emil Chang Law Offices Of Emil Chang

20080061726 - Control device for synchronous motor: A control technology for a synchronous motor for suppressing rotational pulsation caused by variation in individuals without making a control algorithm complex is provided. In a motor drive system which is a control device for a synchronous motor, in order to suppress the pulsation component of N times as high... Agent: Townsend And Townsend And Crew, LLP

20080061728 - Motor control device and current detecting unit: A current detecting unit detects three phase current of a three-phase inverter from current flowing between the inverter and a DC power supply. The current detecting unit includes a specified voltage vector generating portion that generates a specified voltage vector indicating a voltage vector that three-phase voltage of the inverter... Agent: Ditthavong Mori & Steiner, P.C.

20080061727 - Motor control device: A motor control device includes a current detecting portion that detects current flowing between an inverter for driving a three-phase motor and a DC power supply for supplying DC voltage to the inverter, a current estimator that estimates a current vector of the motor on a rotating coordinate that rotates... Agent: Ditthavong Mori & Steiner, P.C.

20080061729 - Methods to control high speed electric machines having a front-end emi filter attached: A system and method for extracting estimated input voltage and input current values of an AC motor based on sensed power inverter output voltage and output current when the AC motor is connected to a front-end EMI filter and the EMI filter is connected to a power inverter. Where the... Agent: Carlson, Gaskey & Olds, P.C.

20080061730 - Frequency converter, motor, motor drive system and maintenance method for motor drive system: A frequency converter for outputting a power to drive a motor, having: an inverter unit for inverting a d.c. power to an a.c. power; a control unit for controlling the inverter unit; and a housing for supporting at least the inverter unit and control unit, wherein a rise time change... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080054827 - Power system rating converter: A system comprising at least one flywheel, a first motor, a dynamo, and a second motor. The first motor may consuming electrical power and urging rotation of the flywheel. The dynamo may use rotational energy received from the flywheel to generate electrical power. The second motor may consuming at least... Agent: Pate Pierce & Baird

20080054828 - Device opener and vibration mechanism: A device, method and computer program product for effecting vibrations in a device. In accordance with one example embodiment of the present disclosure, there is provided a device comprising: a first body; a second body mounted to the first body for movement relative to the first body between closed and... Agent: Ridout & Maybee Suite 2400

20080054829 - Numerical controller: A servomotor in a numerical controller is controlled by automatically switching to either pressure control or position control in association with the command which is smaller from among a command obtained by performing pressure feedback control and a command obtained by performing position feedback control. When switched to pressure control... Agent: Staas & Halsey LLP

20080054830 - Microcontroller interface with hall element: A device controller system incorporates an inexpensive Hall element to detect motion of a brushless DC motor. A magnet, which is part of a motor rotor, passes by the Hall element producing a Hall voltage each rotation. The Hall voltage is coupled through an interface port to a comparator within... Agent: Schneck & Schneck

20080054831 - Current limiting dc motor starter circuit: A current limiting DC motor starter employing a closed loop current measurement to provide precise current control that adapts to changing motor conditions, integrated with a solid state reversing motor starter. The motor starter further includes a calibrated overcurrent indication and a control system interface that reduces the likelihood that... Agent: Westinghouse Electric Company, LLC

20080054832 - Method of controlling a motor: A method for controlling a motor (2) which drives a disk-shaped tool (4) of a power tool (1) and to which a motor voltage in the amount of a nominal value is applied in an “on” position of a motor switch (6), includes determination of an actual motor current (IM)... Agent: Abelman, Frayne & Schwab

20080054833 - Control device equipped with motor protection function: The motor control device includes a position detecting sensor detecting an angular position of a motor needle, a speed controller controlling the speed of the motor based on the angular position of the motor needle detected by the position detecting sensor, a temperature estimation component that estimates the temperature of... Agent: Gauthier & Connors, LLP

20080054834 - Servo control apparatus: A servo control apparatus includes a motor including a motor shaft, the motor for driving a drive subject; a detecting section that detects a rotation position of the motor shaft; and a control system configured to generate a motor torque command for the motor using the rotation position. The control... Agent: Amin, Turocy & Calvin, LLP

20080054835 - Method and apparatus for controlling motor for vehicles: An apparatus is provided for controlling drive of a motor mounted on a vehicle and formed to have a rotor and a stator equipped with a plurality of phases of coils to be supplied by current in turn, phase by phase, to rotate the rotor. The apparatus comprises a voltage... Agent: Nixon & Vanderhye, PC

20080054836 - System and method for facilitating fluid three-dimensional movement of an object via directional force: A reeving system for filming movies, sporting events, or any other activity that requires fluid movement of a camera or other object to any position within a defined volume of space. To accomplish positioning embodiments move an object throughout three-dimensional space by relocating one or more lines that are feed... Agent: Dalina Law Group, P.C.

20080054837 - System and method for generating a drive signal: A method and computer program product for defining a PWM drive signal having a defined voltage potential. The PWM drive signal has a plurality of “on” portions and a plurality of “off” portions that define a first duty cycle for regulating, at least in part, a flow rate of a... Agent: Holland & Knight LLP

20080054838 - Method for controlling the position of a movable object, a positioning system, and a lithographic apparatus: A method of actuating a movable object in a first degree of freedom includes a) providing a first motor assembly including one or more motors of a first type and a second motor assembly including one or more motors of a second type, each of the first and second motor... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080054839 - Control apparatus and electric brake apparatus: In an apparatus using an inverter as a motor drive apparatus, continuous operation can be permitted during a motor open-phase without providing any additional switching element. Especially, in an electric brake apparatus, higher security can be assured. When a motor winding of one phase occurs an open-phase, currents are conducted... Agent: Crowell & Moring LLP Intellectual Property Group

20080054840 - Solid state reversing ac motor starter with dc power source: A solid state reversing AC motor starter that employs a DC power source and a power bridge employing insulated gate bipolar transistors that provide an ungrounded three phase AC output. The AC output is connected to the power input of the motor starter, which requires simultaneous RUN and Directional Commands... Agent: Westinghouse Electric Company, LLC

20080054841 - System and method for adjustable carrier waveform generator: A system and method for controlling an inverter of a motor control unit includes a controller having a user interface configured to allow user selection of a waveform increment value or a waveform amplitude threshold. The controller also includes an integrator configured to receive the waveform increment value and generate... Agent: Rockwell Automation, Inc./(qb)