Electricity: motive power systems inventions 06/06

20060138975 - Mobile system and driving method thereof: The present invention relates to a mobile system and a moving method of the mobile system. According to the present invention, a natural period is measured from a vibration component signal generated by a force due to acceleration/deceleration of wheels, and the mobile system moves by applying an acceleration profile...

20060138976 - Apparatus and method of driving a light powered system: A motor has a controller that controls the amount of power drawn by motor drive circuitry as a function of the light conversion panels in the system. To that end, the motor also has an input (operatively coupled with the controller) that is couplable with a set of light conversion...

20060138977 - Method and apparatus for precise positioning of an object with linear stepper motors: Methods and apparatus for precise positioning of an object using linear actuators based on linear stepper motors operating in microstepping or full step mode, a control algorithm based on compensation table, and a calibration apparatus for obtaining the compensation table....

20060138978 - Motor vehicle comprising means for varying accelerator pedal extreme actuated position: A motor vehicle including an electric drive engine capable of being successively supplied with electric power by two separate electric power sources, in particular by a set of batteries and by a fuel cell, and of the type including an accelerator pedal that is mobile between a rest position and...

20060138979 - Rotary electric machine for vechicle: [Means for Resolution] Since an inverter unit 22 is integrally attached to a rear bracket 44 and is integrally mounted on the end face of a rotating electrical machine 20 in an axial direction, harnesses to be connected can be made short, and reduction in weight of the harness and...

20060138980 - Electrical rotating machine control unit and power generation system: Because of the necessity of resolver for detecting a rotating position, which is very expensive, and noise suppression of the rotating position signal line on a doubly-fed machine, cost increase of the generator and reduced reliability due to possible failures are inevitable. In order to solve such problem, a generation...

20060138983 - Display device and driving apparatus thereof: A display apparatus may include touch detection circuitry including a light sensing circuit and a physical parameter sensing circuit (e.g., a pressure sensing circuit). The display apparatus may further include processing circuitry implementing a power-saving mode and a normal mode, and configured to generate touch information. An display driver may...

20060138982 - Method of determining the position of the shaft of a drive motor for a roller blind: The method of determining the position of the shaft of a direct current motor including an armature powered via brushes and a bar commutator and designed to drive a roller blind includes the following phases: detecting and counting the commutations that occur between the brushes and the commutator bars to...

20060138981 - Universal device for dc motor speed control: There is provided a controller for a DC motor drive transistor which controls a parameter of a motor, the transistor being of PNP or NPN type, and the controller comprising a detection circuit, adapted to determine whether the DC motor drive transistor is of the PNP or NPN type and...

20060138984 - Method and apparatus for motor control using relays: An apparatus and method for controlling motors using relays is disclosed. The invention includes causing rotation of the motor in a first rotation direction if a first control signal is asserted and causing rotation of the motor in a second rotation direction if a second control signal is asserted. The...

20060138985 - Rotation drive device and rotation drive method: This rotation driving apparatus includes a torque generating circuit 72 for generating a torque of a servo motor 30 with voltage supply from a power source 71 and a motor control circuit 73 for controlling rotation of the motor. In the torque generating circuit 72, a condenser 76 is arranged...

20060138986 - Phase commutation method of brushless direct current motor: A BLDC motor phase commutation method is provided, which can correctly detect phase commutation timing and position detection timing of a BLDC motor in a compressor to stabilize rotation and RPM of the compressor, thereby minimizing noise and vibration. When the BLDC motor rotates through a mechanical angle corresponding to...

20060138987 - Barrier operator controller with user adjustable force setpoint: A control unit for a moveable barrier, such as a garage door, includes a microcontroller connected to a motor speed detector, motor current sensor or a sensor for determining forces exerted on or by the barrier. A user interface includes user actuatable switches for setting a first maximum force value...

20060138988 - Method and device for accurately detecting attitude of movable body: By providing a moving body with a high-accuracy attitude detection mechanism including a pair of a first rate gyroscope for detecting the attitude of the moving body and a second rate gyroscope which obtains an output inverted from that of the first rate gyroscope and the variations in the outputs...

20060138989 - Teach pendant control method and device: There has been a problem that in the operation of a teach pendant having two enable devices (3-position switches) on the right and left sides, shifting it from one hand to the other results in prohibition of operation. In that operation is made possible until a predetermined time elapses even...

20060138990 - Position controller of motor: A position controller of a motor in which the position time can be shortened even if an external force is applied. A speed control unit (13) comprises a compensation low-pass filter (133) having a transfer function corresponding to a delay of a speed control system. The speed control unit (13)...

20060138991 - Step motor: A step motor includes a rotor having four magnetic poles, a first magnetic pole magnetically excited by a first coil, a second magnetic pole magnetically excited by a second coil, and a third magnetic pole magnetically excited by the first coil and the second coil. A gap between the third...

20060138992 - Motor controller and out of control detecting method: According to the present invention, a voltage and a current of an AC motor are controlled by subjecting the voltage and current to coordinate transformation along two axes “d” and “q,” and detects occurrence of a control deviant state from “d” and “q” components of the voltage or current. A...

20060138993 - Tandem battery powered inverter and method of implementing the same: AC inverters that are electrically connected to a direct current source to convert the direct current source such that the transistor power module of an inverter can power a plurality of AC motors wherein the motors can be located remote from the inverters or within the inverter housings....

20060138994 - Space vector-based current controlled pwm inverter for motor drives: A motor driver has a plurality of output circuits each having an upper side switch and a lower side switch connected in series for supplying a current to a motor. The motor driver includes a current detection resistor connected in series with the plurality of output circuits in common for...

20060138995 - Generated power control system: A generated power control system in which the magnetic field of a generator is controlled based on a target generated power so as to perform the appropriate generation control. Preferably, the generated power control system is used in a hybrid vehicle having a generator configured to be driven by an...

20060132069 - Actuation device: The invention relates to an actuating apparatus that can be used, for example, as an actuating apparatus for a motor vehicle transmission, the select function and the shift function being guaranteed by this actuating apparatus and it being possible to effect this using exactly one electric motor, and it being...

20060132070 - Closed-loop rotational control of a brushless dc motor: Method and apparatus for controlling a brushless dc motor, such as the type used in a data storage device to rotate data storage media. A sequence of drive pulses is applied to rotate the motor. The sequence is switched from first to second motor commutation states at a time determined...

20060132071 - Device and method for starting brushless direct current motor: A Brushless Direct Current (BLDC) motor starting method and device are provided, in which startup noise and vibration and startup failure rate can be reduced using a constant low-speed startup scheme when the BLDC motor is in sensorless startup mode, and PWM duty is also maintained at low level when...

20060132072 - Method of operation of a home-automation installation: The method of operation is applied to an installation comprising an actuator supplied with an AC electric voltage and intended to drive a movable element equipping a building, in a first direction when the AC electric voltage is applied between a neutral conductor and a first phase conductor and in...

20060132073 - Braking chopper: A braking chopper for dissipating braking power away from the direct-current rails of an AC drive system, said braking chopper being an inverter unit (INU) physically similar to those also used as motor supply devices, consisting of upper- and lower-branch controllable semiconductor switches (V1-V6), wherein the inverter is connected by...

20060132074 - Lead-angle control method and device for operating permanent magnet synchronous motor in flux weakening regions: A lead-angle control device according to the present invention includes: a space voltage vector controller calculating effective vector application times necessary for obtaining output voltage vectors of an inverter from stationary-coordinate-system instruction voltage components; a lead-angle compensator comparing the sum of the effective vector application times with a sampling period,...

20060132076 - Method for automatically adjusting the commutation angle in brushless direct current motors: l

20060132075 - Startup control method of brushless dc motor: A startup control method of a BLDC motor is disclosed. The method can control the BLDC motor to prevent the generation of a transient current such that the vibration of the BLDC motor can be reduced at the startup stage and perform a stable conversion into a senseless operation mode...

20060132077 - Conveyor unit, controller for a driving roller for use in the conveyor unit, and zone controlled conveyor system incorporating the conveyor unit: A conveyor unit (2) including a driving roller (5), a motor (30) for powering the driving roller (5), and a controller (10) adapted to adjust the motor (30) so as to control the driving roller (5), the motor (30) including a permanent magnet and an armature having a plurality of...

20060132078 - Controller for machine effecting end: A controller for controlling a position of a driven element with respect to a machine effecting end so as to be in accord with a command. An acceleration sensor is mounted to a member of the machine effecting end to which a tool is attached. Acceleration detected by the sensor...

20060132079 - Self-traveling cleaning robot: A self-traveling cleaning robot includes: a stepped portion detecting unit for detecting a stepped portion of a floor arranged on the center front part of the bottom of the robot main body; an angle detecting unit for detecting the rotation angle of the main body in horizontal direction of the...

20060132080 - Position command and pulse timing command optimization for step motors, using a position sensor: Optimized pulse commands are utilized for reducing vibration in a step motor, the optimized commands being created by correcting position, velocity, acceleration, deceleration, and movement distance terms of a basic motion profile with position feedback information generated during operation....

20060132081 - Power conversion apparatus: A power conversion apparatus for converting power from an alternating source to dc includes an input stage for receiving power from the alternating source, which includes an input filter, a rectifier for rectifying the alternating signal, a capacitor for storing energy from the rectified signal, and an output for outputting...

20060132082 - Method and system for controlling permanent magnet synchronous motor: A system for controlling a permanent magnet synchronous motor calculates fundamental a d-axis (or q-axis) voltage command based on a difference between a d-axis (or q-axis) current command and a d-axis (or q-axis) current feedback signal, calculates a harmonic suppression d-axis (or q-axis) voltage command used to suppress at least...

20060132083 - Controller for brushless motor: The controller for a brushless motor controls motor current by executing updates of applied voltage to a coil in accordance with rotational position of a rotor, the target current, and the actual current flowing through the coil. The updates of applied voltage to the coil are executed according to the...

20060132084 - Method and apparatus for determining motor rotation status: A motor drive unit includes a voltage inverter, a controller, and reconnect logic. The voltage inverter provides motor drive signals to an associated motor. The controller is operable to generate demand signals for at least two control axes for controlling the voltage inverter. The reconnect logic is operable to direct...

20060125427 - Method and apparatus for estimating rotor position and for sensorless control of a switched reluctance motor: A discrete rotor position estimation method for a synchronized reluctance motor is provided. A d.c.-link voltage Vdc and a phase current Iph are sensed. A flux-linkage λph of an active phase is calculated from the sensed d.c.-link voltage Vdc and the sensed phase current Iph. The calculated flux-linkage λph is...

20060125428 - Method for operating a programmable washing machine: In an anti-crease operation incorporated after the program sections wash and spin to loosen laundry in the drum, the user should be offered the possibility of being able to actively influence this operation. For selecting the adjustable parameters for the duration and sequence of the anti-crease program the user is...

20060125429 - Method, medium, and apparatus controlling current gain change of a spindle motor driver: A method, medium, and apparatus for controlling a spindle motor of a disk drive. Particularly provided is a method, medium, and apparatus changing a current gain of a spindle motor driver according to the operating environment of the spindle motor. The method of controlling the spindle motor, using the current...

20060125430 - Image forming apparatus: A position detecting unit detects rotational position information of a plurality of motors. A phase difference control unit delays an excitation phase switching pulse of at least one of the motors by a predetermined amount on the basis of the rotational position information of the motors and predetermined time difference...

20060125431 - Method and arrangement for controlling the synchronous running of a plurality of electronically commutated motors: A method of controlling synchronous running of a plurality of electronically commutated motors (22, 24, 26), each of which includes a stator having a stator winding (40, 42, 44), a permanent-magnet rotor (28, 30, 32), and at least one arrangement (34, 36, 38), associated with the respective motor, for sensing...

20060125432 - Motor assembly for folding/unfolding foldable screen: A motor assembly for driving a foldable screen includes an inner tube, a motor device mounted in the inner tube and including a DC motor, an outer tube mounted around the inner tube, a control device, and a connecting device mounted to an end of the inner tube. A screen...

20060125434 - Converter for a motor vehicle: An automotive frequency converter is connected to at least one load socket. The electrical converter is switched to an operational state by inserting an electrical load plug in the load socket....

20060125433 - Method and system for fail-safe motor operation: An electric device includes a motor and a motor drive for commanding a torque generated by the motor. A fault control circuit detects a fault condition associated with the motor drive. Upon detection of the fault condition, the fault control circuit adjusts the torque commanded by the motor drive....

20060125435 - Method for operating a rotating electrical machine: A method is specified for operating a rotating electrical machine, in which the rotating electrical machine is connected in terms of phase to a converter circuit, having a DC voltage circuit, for connecting at least two voltage levels, and the phases of the converter circuit are connected to the DC...

20060125436 - Power supply circuit of a high speed electric motor: A power control system (12) for an electric motor having at least one magnetic bearing includes a DC/DC converter (18) supplied from a DC link bus (179) connected to a main power supply (14), the bus (17) supplying power for the electric motor and for a bearing actuator the converter...

20060125437 - Motor control method and device thereof: A motor control apparatus comprises the amplitude adjustment section and the peak voltage control section so as to adjust the torque control output in correspondence with the output voltage of the inverter. The peak voltage control section detects the peak voltage of the voltage command, and outputs the adjustment command...

20060125438 - Synchronous controller: A synchronous controller capable of gently changing a synchronous multiplying factor and setting the gentleness of changing of the synchronous multiplying factor without shocking a machine. A block for gently changing the synchronous multiplying factor is added between blocks before and after the changing of the synchronous multiplying factor. Synchronous...

20060125439 - Synchronous motor drive unit and a driving method thereof: A rotary sensor that outputs two analog signals, such as one sine wave and one cosine wave and has multiple periods within one period of the electrical angle of a motor is employed. The motor is energized at each position for a specified length of time upon its startup by...

20060125440 - Controller for a synchronous motor: A controller for a synchronous motor, the controller being operable in use to receive from sensor means coupled to a synchronous motor actual angular displacement signals representative of angular displacements from a reference orientation of a rotor of a synchronous motor, to transmit the actual angular displacement signals to a...

20060113929 - Motor control for flux-reduced braking: A method and apparatus for braking an AC motor in the higher portion of its speed range includes substantially reducing flux before applying reverse torque commands to brake the motor. A DC link bus regulator is employed to prevent increases in bus voltage and frequency....

20060113930 - Control device for variable speed electric motors, particularly for power tools: A device for controlling variable speed electric motors, particularly for hand held power tools and other miniaturised electrically powered apparatuses, comprises an electronic driver unit (5) connectable to the terminals (2, 3) of an electric power source for supplying electric current to at least one electric motor (M) and an...

20060113931 - Method and device for controlling motor: A motor control method is provided in which a cycle between at least one of leading edges and trailing edges of a pulse signal is measured. The pulse signal is outputted from a pulse signal generator which generates a pulse signal every time a driven target is driven for a...

20060113932 - Vibrator unit and portable telephone employing it: A vibrating device that can be applied to various purposes other than as a vibrator and that can achieve cost reduction, size reduction, and space saving by a reduction in the number of components, and a mobile phone using this vibrating device are provided. The vibrating device has a housing...

20060113933 - Fault-tolerant electromechanical actuator having a torque sensing control system: An electromechanical actuator (EMA) is provided. The EMA includes a threaded output ram connectable to a mechanical component and at least one motor module engageable with the output ram for controllably translating the output ram along a linear axis of the output ram. The actuator further includes a torque sensing...

20060113934 - Electric tightening device: A controller compares a minimum value of power source voltage which decreases in association with starting current generated upon start of a motor with a threshold value in a storing unit. When the minimum value is less than the threshold value, the controller notifies of shortage of the power source...

20060113936 - Apparatus and method for retracting awning: An apparatus and method for retracting an awning. A sensor detects an awning acceleration caused by wind impacting the awning, and generates a signal having an amplitude corresponding thereto. When the signal exceeds a certain threshold, the awning is retracted. The signal's amplitude may be converted into a frequency, and...

20060113935 - Barrier operator controller with optical limit switches: An operator for a barrier, such as an upward acting door, includes a control unit having two optical limit switches providing output signals to a controller to effect shut-off of the operator motor when the door reaches open and closed limit positions. The limit switches preferably include LED emitter and...

20060113937 - Motor controller and steering device: A motor controller including an inverter including plural switching elements that are subjected to PWM control to generate sine waves of plural phases, a motor including a stator coil supplied with the sine waves thus generated so that rotational magnetic field is generated in the stator coil, and a rotor...

20060113938 - Power steering control device and method thereof: The present invention is a power steering control device, which calculates a control target current value of the driving current to drive a motor based on a steering torque applied on a steering, and at the same time, applies a PWM driving current modulated in pulse width on the steering...

20060113940 - Control system for electric actuator: A driver comprises a direction-switching means which switches a rotation direction of a rotary driving source based on a direction instruction signal, a current amplifier/limiter which converts a voltage outputted from the direction-switching means into a corresponding current and which limits the current to a preset reference current IMAX (threshold...

20060113939 - Frequency converter overvoltage protection: d

20060113941 - Brushless dc motor controller: A controller excites a multi-phase brushless direct current motor and has a power stage provided with output lines connected to corresponding phases of the motor. The power stage is operable to deliver voltages on the output lines in a sequence that executes a commutation. A processor controls the sequence of...

20060113942 - Wiper device control method, wiper device and motor with speed reduction mechanism: A wiper device, wherein a sensor magnet 41 fitted to an output shaft 34 is so formed that when wiper arms 1a, 1b are positioned at upper reversal positions B relative to an origin position O, both hole ICs 37a, 37b are opposed to an S-pole and when the wiper...

20060113943 - Contact-detecting apparatus: A contact-detecting apparatus provided at an open-and close device for detecting a state of contact with trapping object to be detected includes a piezoelectric sensor member for detecting a state of contact of the open-and close device with the trapping object to be detected, a detection circuit for receiving an...

20060113944 - Screening device with motor drive and use hereof: Screening device for screening opening in building, window, door or the like, said screening device comprising a screening element (11) which in an inactive position is rolled up, folded together, gathered together or the like at a first position. The screening element is connected at a free end to a...

20060113945 - Process for the control of the position of workpiece and tool with a robot in a production machine: The invention relates to a process for the control of the position of workpiece and tool with a robot in a production machine. The objective of the invention is to reduce non-productive secondary processing time during the processing or measuring of a workpiece with a robot. The invention consists of...

20060113946 - Controller: Disclosed is a controller for restraining vibration of a driven element driven by a servomotor. The driven element driven by the servomotor is provided with acceleration detecting means. A correction value is obtained by multiplying a detected acceleration value detected by the acceleration detecting means by a coefficient. Correction is...

20060113947 - Rotary shaft control apparatus: The invention aims to suppress or prevent the vibration that can occur due to the intervention of a low-rigidity part between detector and rotating body. An angular acceleration sensor for detecting the rotational angular acceleration of a rotating body is provided, and an angle/angular speed command value is compensated in...

20060113948 - Synchronous moter driving apparatus: A synchronous motor driving apparatus having a power converter which applies AC variable voltages having variable frequency to a synchronous motor includes a pulsating current application unit for applying pulsating current to the synchronous motor and a magnetic pole position presumption unit. The magnetic pole position presumption unit detects two...

20060113949 - Method for detecting/adjusting synchronous motor rotor position: To obtain an adjustment method of rotor position detection of a synchronous motor with excellent productivity. An adjustment method of rotor position detection of a synchronous motor, wherein a synchronous motor having a stator wound around a stator coil and a rotor provided with magnetic poles, and a rotational position...

20060113950 - Apparatus for controlling speed of fan motor of air-conditioner: An apparatus for controlling a speed of a fan motor (HIM (Hybrid Induction Motor)) of an air-conditioner extends a speed control range of a fan motor of an air-conditioner by controlling revolutions per minute (RPM) of the fan motor. In order to extend the speed control range of the HIM,...

20060113952 - High power density/limited dc link voltage synchronous motor drive: A method and an apparatus optimize performance of a motor drive system. The method according to one embodiment comprises: selecting a property for a rated operation point; selecting inverter system characteristics and motor characteristics such that a motor drive system including an inverter system having the selected inverter system characteristics...

20060113953 - Inverter: An inverter has a measuring part that measures an operating time such as the time interval from when a command to start a specified operation by an associated system until a signal indicating the completion of the operation is received. A comparing part compares this measured operating time with a...

20060113951 - Inverter system, ac rotating machine and electric power converter: In an inverter system including of an electric-power converter and an ac rotating machine, over-voltage generated in the ac rotating machine is controlled by a low-cost system configuration. The system includes: an electric-power converter; a three-phase ac rotating machine; and a four-core non-coaxial cable, having a ground line and three-phase...

20060113954 - Advanced current control method and apparatus for a motor drive system: An apparatus controls a power converter of an AC motor drive system, the power converter outputting multi-phase AC current to an AC motor. The apparatus comprises: a state selecting unit; and an advanced controller. The state selecting unit selects an operation mode, from among a plurality of operation modes, for...