Electricity: motive power systems inventions 03/07

20070069665 - Multi-axis ac servo control system and method: A multiple axis servo control implements a multi-tasking PWM control unit to provide PWM signals for multiple axes in a single unit. A time slice mechanism provides axis selection signals based on a system clock signal to permit control parameters of the selected axis to be processed to control the... Agent: Ostrolenk Faber Gerb & Soffen

20070069666 - Apparatus for processing an object with high position accurancy: A apparatus processes an object (19), such as a semi-conductor wafer at accurately controlled positions. The object (19) is supported by a working platform (12) that is moveable along a path. A suspension actuator part (14) attached to the working platform (12), contains a soft magnetic core (24) with poles... Agent: Philips Intellectual Property & Standards

20070069667 - Selectively configurable electric motor: A selectively configurable electric motor comprises a stator and a plurality of poles electrically coupled to the stator. The selectively configurable electric motor also includes an actuator separated from the poles by an air gap and configured to move relative to the stator in the presence of an electromagnetic field.... Agent: Caterpillar/finnegan, Henderson, L.L.P.

20070069670 - Controller device of cooling fan: A PWM controller device of a simple cooling fan includes a fan motor, a driver device, and a PWM controller device. The driver device is electrically connected to the fan motor. The PWM controller device is electrically connected to the fan motor and the driver device. The driver device internally... Agent: Hdsl

20070069668 - System and method for evaluating back electromotive force in a motor: Methods for evaluating back electromotive force (EMF) in a polyphase motor is described. The methods include monitoring back EMF in the motor after a commutation of the motor, and evaluating the back EMF only after a back EMF event occurs after the commutation of the motor. The methods may also... Agent: Mccarthy Tetrault LLP

20070069669 - System and method for starting and operating a motor: A method for determining an initial position of a rotor of a polyphase motor is described. The method comprises determining current change values from a plurality of phases of the motor during saturation of the motor relating to the initial position of the rotor; identifying a set of modelled current... Agent: Mccarthy Tetrault LLP

20070069671 - Electric power tool with memory capability: The invention relates to an electric power tool having a control and/or regulating device for an electric motor. It is provided that the control and/or regulating device (4) is assigned an electronic memory element (5) for at least one operating state of the electric motor (1).... Agent: Michael J Striker Striker Striker & Stenby

20070069672 - Power tool and motor controller: A method and apparatus to automatically reverse the motor of a power tool, such as a dispensing gun or similar tool. In some constructions, a controller automatically reverses the direction of plunger movement and removes the plunger from contact with the back wall of a cartridge. The controller has a... Agent: Michael, Best & Freidrich LLP

20070069673 - Power control apparatus, electrically powered vehicle and power control method of power system: When surplus power not charged to an electric storage is generated at the time of regenerative braking of a vehicle, a voltage is generated across first and second neutral points using a zero-voltage vector each of first and second inverters and the generated surplus power is consumed by a resistance... Agent: Oliff & Berridge, PLC

20070069674 - Electric motor regulation with controlled error intercept: A motor is controlled by a motor control signal so that it reaches a target state, which is derived from sensor data sensed by a sensor. The motor can be put into a rest state at the occurrence of an error in simple and efficient manner by means of a... Agent: Baker Botts, L.L.P.

20070069677 - System and method for applying energy to a motor: A system for controlling a polyphase motor is described. The system comprises phase windings in the motor for energizing stators to cause rotational motion of a rotor of the motor as energy is applied to one or more phase windings, and a bridge circuit having a branch circuit connected to... Agent: Mccarthy Tetrault LLP

20070069675 - System and method for attenuating noise associated with a back electromotive force signal in a motor: A method for attenuating switching noise from back electromotive force (EMF) observations in a motor is described. The motor is controlled by pulse width modulation (PWM) signals provided at a PWM frequency. The method comprises sampling back EMF observed in the motor at a sampling frequency at least two times... Agent: Mccarthy Tetrault LLP

20070069676 - System and method for commutating a motor: A method for adjusting a rotational speed of a rotor in a polyphase motor from a first speed towards a second, faster speed when the motor is commutating according to a commutation scheme at a first commutation phase angle is described. The method comprises selecting an advanced phase angle relative... Agent: Mccarthy Tetrault LLP

20070069678 - Integrated motor monitoring system: An integrated motor monitoring system includes a housing and a motor disposed within the housing, the motor being configured to provide a power output. The integrated motor monitoring system also includes at least one monitoring device communicatively coupled to the motor and configured to monitor an operational aspect of the... Agent: Caterpillar/finnegan, Henderson, L.L.P.

20070069679 - Servo system for a two-dimensional micro-electromechanical system (mems)-based scanner and method therefor: A servo control system micro-electromechanical systems (MEMS)-based motion control system (and method therefor), includes a motion generator having an inherent stiffness component.... Agent: Mcginn Intellectual Property Law Group, PLLC

20070069680 - Debris sensor for cleaning apparatus: A piezoelectric debris sensor and associated signal processor responsive to debris strikes enable an autonomous or non-autonomous cleaning device to detect the presence of debris and in response, to select a behavioral mode, operational condition or pattern of movement, such as spot coverage or the like. Multiple sensor channels (e.g.,... Agent: Jacobs & Kim LLP

20070069681 - Method of estimating magnetic pole position in synchronous motor: In a method of estimating a magnetic pole position in a synchronous motor, an alternating current voltage having α- and β-axes components in an αβ coordinates system representing a two-phase alternating current coordinates system is applied to the motor, and α- and β-axes components of an alternating current are detected... Agent: Oliff & Berridge, PLC

20070069682 - Control device for synchronous motor: The invention provides a control device for a synchronous motor which drives the synchronous motor through a voltage-operated PWM inverter and controls a torque and a speed of the motor, including means (6-3) for causing a PWM carrier signal to have an arbitrary phase difference between two phases such as... Agent: Sughrue-265550

20070069683 - Electric machine and method of operating the electric machine: A method of and apparatus for controlling an electric machine. The method can include using a controller to detect whether power is present at a first node of the controller, detect whether power is present at a second node of the controller, generate at least one signal based at least... Agent: Michael Best & Friedrich, LLP

20070063660 - Control apparatus for vehicular drive system: The present invention is, in a control apparatus for (a) a vehicular drive system including: a continuously-variable transmission portion operable as an electrically controlled continuously variable transmission and having a differential mechanism operable to distribute an output of an engine to a first electric motor and a power transmitting member,... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070063661 - Protection circuit for permanent magnet synchronous motor in filed weakening operation: A safety circuit for providing protection against failures that impact safety of an inverter circuit driving a Permanent Magnet Synchronous Motor (PMSM) including high and low side switches connected in a bridge and driven by a gate driver circuit during operation of the PMSM in a field weakening mode, the... Agent: Ostrolenk Faber Gerb & Soffen

20070063662 - Electrical vehicle controller: The maximum frequency and the minimum frequency are extracted from frequencies corresponding to respective axle speeds. The minimum frequency is subtracted from the maximum frequency to achieve a first frequency deviation, and also the first frequency deviation is input as a primary delay system to achieve a second frequency deviation.... Agent: Buchanan, Ingersoll & Rooney PC

20070063663 - Motor vehicle steering system: A motor vehicle steering system includes a motor driving circuit connected between a power supply and a ground for driving a multi-phase motor, PWM signal generating unit for generating an each-phase PWM signal for controlling a current flowing through each of phases of the multi-phase motor and feeding the each-phase... Agent: Rabin & Berdo, PC

20070063664 - Phase identification apparatus having automatic gain control to prevent detector saturation: An apparatus for measuring phase angle difference between two conductors uses a hot stick, a field unit, and reference unit. Voltage is sensed at a conductor, and the voltage is passed through an automatic gain control which adjusts the voltage input to a voltage detector to a level which prevents... Agent: Snider & Associates

20070063665 - Method and apparatus for monitoring motor status using induced motor voltage: A motor drive unit includes a controller, a voltage inverter, and a speed estimator. The controller is operable to generate at least one command signal for controlling a motor associated with the motor drive unit. The voltage inverter is operable to generate motor drive signals to be applied to the... Agent: Susan M. Donahue Rockwell Automation, Inc.

20070063666 - Driving device of motor: An object is to provide a driving device capable of smoothly shifting from a starting state to a sensor-less vector control, in a case where the device drives a motor by the sensor-less vector control, and the device includes a voltage detecting circuit which detects an induced electromotive voltage of... Agent: Mcdermott Will & Emery LLP

20070063667 - Driving device of motor: An object is to provide a driving device capable of detecting a current of a motor without any trouble even in a low rotation speed/low load state to continue a sensor-less vector control, in a case where the motor is driven by the sensor-less vector control, and the driving device... Agent: Mcdermott Will & Emery LLP

20070063668 - A ride-through method and system for hvac&r chillers: A method of providing ride-through capability in a chiller/refrigeration system employs a variable speed drive with an active converter stage, a DC link stage and an inverter stage for providing variable frequency and voltage to power at least one motor. An induction motor is coupled to the output of the... Agent: Mcnees Wallace & Nurick, LLC

20070057644 - Automatic anti-trap device: An automatic anti-trap device is provided to add safety to other apparatuses. The automatic anti-trap device of this invention has a driving circuit to control a motor, a current sensor to generate a current signal, a current ripple peak value circuit to generate a current ripple peak value signal according... Agent: Birch Stewart Kolasch & Birch

20070057645 - Hyper-drive button for d.c. motor powered vehicle: A controller coupled with a user interface together enable a user temporarily to elevate the power curve of motor operation in electric vehicles that utilize pulse width modulation controllers to regulate mechanical power supplied by commutator type direct current motors. The user interface comprises a switch which, in its normal... Agent: Anthony Claiborne

20070057646 - Automatic anti-trap device: An automatic anti-trap device is provided to add safety to other apparatuses. The automatic anti-trap device of this invention has a driving circuit to control a motor, a current sensor to generate a current signal, a current ripple peak value circuit to generate a current ripple peak value signal according... Agent: Birch Stewart Kolasch & Birch

20070057647 - Motor phase fault detection control: An apparatus is provided for controlling a single phase induction motor having a main winding, an auxiliary start winding and a start capacitor in series with the start winding. The apparatus comprises a sensing means for sensing the voltage across the main winding and across the start winding of the... Agent: Harness, Dickey, & Pierce, P.l.c

20070052377 - Running machine with wheels: A running machine that can prevent overturning of a body in the case of occurrence of an abnormality is provided. The running machine substantially supports the body with coaxially arranged drive wheels, and can drive while maintaining the balance of the body. A control module of the machine comprises a... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20070052378 - Device for controlling inductive load: A device for controlling inductive load comprises at least: a power source, a first control assembly, a second control assembly and an inductive load. The first control assembly is connected in series to the power source, and comprises: a relay switch, a relay and a MOSFET, the relay switch is... Agent: Charles E. Baxley, Esquire

20070052380 - Fan: A fan includes a fan leaf having a rotor in the interior of the fan leaf, and a hollow frame. In the center of the interior of the hollow frame, there is a base for pivoting with the fan leaf. On the surface of the base, there is a stator.... Agent: Rosenberg, Klein & Lee

20070052379 - Motor driving inverter circuit module, motor driving apparatus having the motor driving inverter circuit module, and inverter integrated circuit package: The motor driving inverter circuit module includes first-phase, second-phase, and third-phase high voltage drivers generating first-phase, second-phase, and third-phase upper arm and lower arm driving signals in response to input signals for driving the first-phase, second-phase, and third-phase upper and lower arms and a first-phase, second-phase, and third-phase upper arm... Agent: Sidley Austin Brown & Wood LLP

20070052381 - Electric power steering system: There are provided a high-order current distortion compensator which uses rotational position information on an electric motor and a target current value of the electric motor for deciding a compensation value for current high-order-component for canceling torque ripple caused by predetermined high-order components of a current flowing through the motor,... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20070052382 - Inverter circuit and compressor: An inverter circuit includes a temperature measuring section for measuring a temperature of switching elements forming a powering section, a motor speed detector for detecting a speed of a motor, a carrier frequency determiner for determining a carrier frequency based on a temperature of the switching elements and a speed... Agent: Ratnerprestia

20070052383 - Machine having movable unit to be controllably driven by servo motor: A speed region of a motor is divided into a region lower than a first switch speed VS1, a region higher than a second switch speed VS2 and a region between the first and second switch speeds. An abnormal load determination level to be compared with an estimated load obtained... Agent: Staas & Halsey LLP

20070052384 - Inverter circuit free from power-source-voltage fluctuation: An inverter circuit includes a bridge circuit constituted of a plurality of pairs of a high-side switching element and a low-side switching element, a command signal processing section, a pulse generating section for generating pulse signals to control the inverter bridge circuit according to the command signal to have a... Agent: Nixon & Vanderhye, Pc

20070046220 - Locomotive speed determination: A method and system for determining a ground speed for locomotives (e.g., 12, 14) of a train (16) comprising at least two locomotives for use in controlling an operation of the train. The method includes selecting an axle of any one locomotive of the train for measuring a speed corresponding... Agent: Beusse Wolter Sanks Mora & Maire, P.A.

20070046221 - Method for controlling stage apparatus: At least one exemplary embodiment is directed to a control method for controlling a stage apparatus including a base and a stage, the base including first and second coil phases, the stage including a plurality of magnets. The control method includes a first energization step of rotating the stage to... Agent: Canon U.s.a. Inc. Intellectual Property Division

20070046225 - Brushless motor commutation and control: A commutation apparatus drives a brushless motor having a stator equipped with a plurality of coils and a rotor. The commutation apparatus comprises a rotatable commutator shaft, two or more conducting rings carried discretely about the shaft, and two or more conducting segments carried discretely about the shaft at staggered... Agent: Schlumberger Ipc Attn: Tim Curington

20070046224 - High power, low emi noise interconnection for connecting an electric motor to an inverter: A low noise interconnection system is provided which is configured to couple a motor to an inverter. The system comprises a bus bar and a motor winding. The bus bar is configured to receive a current from the inverter. The motor winding is directly connected to the bus bar and... Agent: Christopher Devries General Motors Corporation

20070046223 - High power, low noise interconnection for an integrated dual wound motor to a dual inverter: A high current interconnection system is provided which can be configured to couple a motor to an inverter. A high current interconnection system comprises a bus bar, a motor winding coupled to the bus bar, and a thermal interface. The motor winding is configured to receive a current. The thermal... Agent: General Motors Corporation Legal Staff

20070046222 - System and method for electric motor control: An electric motor control system includes a housing and a motor disposed within the housing. The electric motor control system also includes an actuator operatively coupled to the motor and configured to operate in response to an operation of the motor. The electric motor control system further includes a controller... Agent: Caterpillar/finnegan, Henderson, L.L.P.

20070046227 - Electrical device for processing food products, equipped with a sensor for the rotation speed of the drive shaft:

20070046230 - Information processing apparatus and fan control method: According to one embodiment, an information processing apparatus includes a main body, a heating device provided in the main body, a cooling fan provided in the main body, which cools the heating device, and a fan control unit provided in the main body, which supplies the cooling fan with a... Agent: Blakely Sokoloff Taylor & Zafman

20070046226 - Motor control apparatus: The present invention provides a motor control apparatus capable of detecting a rotation abnormality of a motor without receiving influence of pulse of a rotation speed of the motor. A current rotation speed of the motor is obtained by output from a rotation speed detection device. Of rotation speeds previously... Agent: Osha Liang L.L.P.

20070046228 - Motor speed control circuit: A motor speed control circuit which controls a rotational speed of a motor by controlling an amount of current flowing through a drive coil of the motor. The control circuit comprises a reference voltage circuit that generates a reference voltage corresponding to a speed-specifying signal inputted to specify the rotational... Agent: SocalIPLaw Group LLP

20070046229 - Motor speed control circuit: A motor speed control circuit which controls a rotational speed of a motor by controlling an amount of current flowing through a drive coil of the motor. The control circuit comprises a reference voltage circuit that generates a reference voltage corresponding to a speed-specifying signal inputted to specify the rotational... Agent: SocalIPLaw Group LLP

20070046231 - System and methods for automatically moving access barriers initiated by mobile transmitter devices: An operator system and related methods for automatically controlling access barriers which includes a base controller associated with at least one access barrier and at least one base receiver associated with the base controller. The system also includes at least one mobile transmitter that automatically and periodically generates at least... Agent: Phillip L. Kenner Renner, Kenner, Greive, Bobak, Taylor & Weber

20070046232 - System and methods for automatically moving access barriers initiated by mobile transmitter devices: An operator system and related methods for automatically controlling access barriers which includes a base controller associated with at least one access barrier and at least one base receiver associated with the base controller. The system also includes at least one mobile transmitter that automatically and periodically generates at least... Agent: Renner, Kenner, Greive, Bobak, Taylor & Weber

20070046233 - Arc suppression circuit: A contactor arc suppression system for an electric propulsion vehicle having an on-board diesel-electric power generating system for supplying electric power to a plurality of DC electric traction motors for propelling the vehicle in which the traction motors are operable in an electric power generating mode during electrical braking of... Agent: Beusse Wolter Sanks Mora & Maire, P.A.

20070046235 - Brushless motor commutation and control: A commutation apparatus drives a brushless motor having a stator equipped with a plurality of coils and a rotor. The commutation apparatus comprises a rotatable commutator shaft, two or more conducting rings carried discretely about the shaft, and two or more conducting segments carried discretely about the shaft at staggered... Agent: Schlumberger Ipc Attn: Tim Curington

20070046234 - 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.

20070046236 - Actuator with feedback for end stop positioning: Methods for operating an actuator including providing a position sensor and using the position sensor to provide end-stop functionality for the actuator. The actuator may have a motor controlled by control circuitry, with the control circuitry reading a variable from a position sensor to determine when the motor should be... Agent: Honeywell International Inc.

20070046237 - Miniature surveillance robot: A robotic system has a drive chassis having a drive motor and a drive element attached to the first drive motor, Additionally, a motor controller system provides drive signals to the first drive motor. A logic controller provides control signals to the motor controller. A network system is provided for... Agent: Rohm & Monsanto, PLC

20070046238 - Apparatus for machine tool feedrate override using limiting parameters corresponding to actual spindle speed: An apparatus, machine tool, and method for adaptively controlling a feedrate of a machine tool are provided in which a plurality of maximum spindle power and/or radial load values, each corresponding to a spindle rotational speed, are received, stored and applied. Additionally, the current spindle power and/or the current radial... Agent: Alston & Bird LLP

20070046239 - Device and method for controlling optical axis of headlamps: An optical axis controller and method for headlamps for a vehicle where the swiveling lamps are not driven due to the minute steering operation of the driver. The steering angle of the steering wheel is detected by using, for example, a steering angle signal from a steering angle sensor. A... Agent: Young & Basile, P.C.

20070046242 - Arrangement and method for controlling a propeller drive on a boat: An arrangement and a method for controlling a propeller drive on a boat including a propeller drive suspended in a housing that can rotate, a servo motor which is arranged to rotate said rotating housing, a control unit which is arranged to control the servo motor in response to an... Agent: Novak Druce & Quigg, LLP (volvo Prosecution)

20070046241 - Arrangement and method for parallel alignment of propeller shafts and means for parallel alignment: An arrangement and method for parallel alignment of propeller shafts in a first and a second underwater housing arranged on the hull of a vessel, which underwater housings are arranged to rotate around an axis of rotation which is angled in relation to the propeller shafts arranged in each underwater... Agent: Novak Druce & Quigg, LLP (volvo Prosecution)

20070046240 - Method and arrangement for function test of a steering for a propeller drive on a boat: A method and arrangement for function test of steering for a propeller drive on a boat including a propeller drive suspended in a housing that can rotate, a servo motor which is arranged to rotate the rotating housing, a position sensor in association with the servo motor which is arranged... Agent: Novak Druce & Quigg, LLP (volvo Prosecution)

20070046243 - Shift range switching apparatus: By utilizing a mechanical backlash generated between an electric actuator and a shift range switching mechanism, a specific region is obtained, in which a variation in the output shaft angle is relatively small with respect to a variation in rotor angle. In this specific range, an actual shift range position... Agent: Nixon & Vanderhye, PC

20070046244 - Z-theta table activated by two rotary motors: A Z-θ table includes a bed capable of undergoing linear displacement along the Z-axis and angular positioning. The table includes two rotary motors arranged in a substantially concentric manner with two fixed stators. The interior rotor includes a device for guiding an intermediary piece along the Z-axis, and the exterior... Agent: Kenyon & Kenyon LLP

20070046245 - 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

20070046246 - Self tuning method and apparatus for permanent magnet sensorless control: A plurality of parameters of a Permanent Magnet Synchronous Motor (PMSM) is determined by a motor controller for differentiating between a plurality of PMSMs. This is achieved by first applying regulated DC motor currents at a commanded fixed rotor angle and measuring a quadrature voltage; parking the PMSM at standstill,... Agent: Ostrolenk Faber Gerb & Soffen

20070046247 - Method of rotating a polyphase motor at less than rated speed: A polyphase AC induction motor is connected to a power supply through a soft starter having three sets of inverse parallel connected silicon controlled rectifiers with each set corresponding to one particular phase. Low speed starting and operation of the motor can be accomplished through triggering circuits controlling the phases... Agent: Metz Lewis, LLC

20070046248 - System and method for controlling an induction motor: A system controls an induction motor driven by a power inverter circuit. An operational amplifier circuit is operatively connected to the power inverter circuit and operative therewith for sensing DC current and controlling acceleration and deceleration of the induction motor. The operational amplifier circuit includes a first operational amplifier operative... Agent: Stmicroelectronics, Inc

20070046249 - Motor control device: A motor control device includes an estimator for estimating a rotor position of a motor having a salient pole by using a value corresponding to a q-axis inductance of the motor as an operation parameter where an estimated axes for the control corresponding to d-q axes are γ-δ axes, and... Agent: Ndq&m Watchstone LLP