Electricity: motive power systems inventions 07/06

20060164028 - Double-ended inverter drive system topology for a hybrid vehicle: A double-ended inverter system for a vehicle having a load, a first energy source, and a first inverter system coupled to the first energy source and adapted to drive the load. The double-ended inverter system further having a secondary energy source, a second capacitor coupled in parallel to the secondary...

20060164027 - Unified power control method of double-ended inverter drive systems for hybrid vehicles: A method of providing a unified power control of a motor including providing a first inverter system, a second inverter system, and a motor coupled therebetween; coupling the first inverter system coupled to a first energy source; coupling the second inverter system coupled to a secondary energy source; generating a...

20060164029 - Opening and closing member control apparatus: An opening and closing member control apparatus includes: an open-command receiving portion for receiving a first open command of a first open and close command inputting member and a second open command of a second open and close command inputting member, which performs a second open command input and a...

20060164030 - Motor actuator: A motor actuator for actuating a driven member includes a control unit and a brushless motor, which includes a coil, a magnet and a hall element. The coil generates a magnetic field when being energized. The magnet rotor is rotatable in the magnetic field generated by the coil. The hall...

20060158140 - Motor driving control device to be driven at interval of constant time: A motor driving control device includes a motor, a switch unit that controls driving of the motor, a current detection resistor that outputs a detection voltage indicating a current of the motor, a comparator that compares the detection voltage with a target current value, an on signal generating unit that...

20060158141 - Low power solid state brake switch: A switch assembly including a mounting base and a switch housing including a non-contact switch. The switch assembly also include a calibration feature that is movable between a first position and a second position. The switch assembly may be positioned relative to a target with the calibration feature in the...

20060158142 - Motor drive device and integrated circuit device for motor driving: A three-phase DC motor output stage including a predriver that supplies drive voltages to power MOSFETs supplies output voltages to three-phase coils, monitors whether each of gate-to-source voltages of the power MOSFETs is greater than or equal to a predetermined voltage and thereby detects a current zero cross, and employs...

20060158143 - Controller: First and second acceleration detection means are attached to first and second sections on a driven body, and values of accelerations α1 and α2 in travel direction of the driven body are detected. On the basis of the difference or sum of the acceleration values α1 and α2, at least...

20060158144 - Method for operating a door and a door drive for carrying out this method: A door, especially a sectional door, is operated with the use of a drive unit with a drive gear, a clutch, and a position-detecting unit. The position-detecting unit detects the direction of rotation of the drive gear, detects the number of revolutions of the drive gear by pulses, and stores...

20060158145 - Apparatus for controlling a door drive: The present disclosure relates to an apparatus for controlling a door drive comprising a path-measuring apparatus for the sensing of a door position and/or a door drive position and for the emitting of a corresponding door position signal as well as comprising a control device for the control of the...

20060158146 - Robot hand: A robot hand has a plurality of fingers and is provided, at a location at which the robot hand touches an object, with a moving means for touching the object and moving the object. The moving means is provided to the palm side of the robot hand and/or the finger...

20060158147 - Positioning apparatus and a controlling apparatus: There is provided a testing apparatus for inspecting a head and/or a disk. The testing apparatus includes a positioning apparatus that relatively positions the head and the disk and a controlling apparatus for controlling the positioning apparatuses. The positioning apparatus includes a linear positioning apparatus and a rotational positioning apparatus....

20060158148 - Motor/generator unit: A motor/generator unit in which a motor/generator and an invertor part are integrated and the wiring of a field circuit part for supplying current to a winding on a rotor is rationalized. In a motor/generator unit in which a motor/generator body part having a field winding supplied with electricity via...

20060152178 - Automatic clothes dryer: An automatic clothes dryer comprises a cabinet in which is rotatably mounted a drum that defines a drying chamber and a motor for rotating the drum. A variable speed blower is mounted within the interior space and is fluidly coupled to the drying chamber for moving air through the drying...

20060152179 - Transmission-controlling device: A transmission-controlling device includes a first circuit system, a second circuit system, and a selective switch. The first circuit system is to provide a first voltage. The second circuit system is to provide a second voltage. The selective switch responds to a user's operation to select the first or second...

20060152180 - Electric drive device for vehicle and hybrid engine/motor-type four wheel drive device: A vehicle electric drive system and a hybrid engine-motor type vehicle drive system realizing simplification and miniaturization of electric parts and, moreover, reduction in cost while maintaining performances can be provided. A part 1 of wheels is driven by an engine. The wheels are driven by a motor as necessary....

20060152181 - Back emf detection circuit and method for a sensorless brushless dc (bldc) motor: A prior art direct back EMF detection method synchronously sampled motor back EMF during PWM “off” time without the need to sense or re-construct the motor neutral in a sensorless brushless DC (BLDC) motor drive system. Since this direct back EMF sensing scheme requires a minimum PWM “off” time to...

20060152182 - Detector circuit to be used for measuring current: A detector circuit to be used for measuring current and including a main current transformer and two substantially identical auxiliary current transformers, where magnetomotive forces are induced by a main current, said magnetomotive forces being counteracted by magnetomotive forces induced by a compensating current (i4) in a compensating winding (L4)...

20060152183 - Variable resolution single lever speed control for a hydrostatic transmission: The invention refers to a self-propelled working machine comprising ground engaging means that are in drive connection with an engine for propelling the working machine, a desired speed input means having a range of movement for inputting a desired speed, a control unit receiving a desired speed signal from the...

20060152185 - Actuator current control method: The present invention relates to an actuator current control method. The method of the present invention comprising the steps of measuring a feedback current passing through an actuator, determining PWM duty according to an error component between a target current produced based on an input signal and the feedback current...

20060152184 - Pulse width modulation circuit: The present invention provides a pulse width modulation (PWM) circuit comprising an PWM control circuit for setting an output signal to low when a logical level of a oscillation signal at a first input terminal changes from low to high, for resetting the output level to low in response to...

20060152186 - Method of operating and structure of phase change random access memory (pram): Provided is a method of operating a phase change random access memory comprising a switching device and a storage node comprising a phase change layer. The method includes applying a reset current passing through the phase change layer from a lower portion of the phase change layer toward an upper...

20060152187 - Stepper motor controlling apparatus and pen recorder: A stepper motor controlling apparatus has a driver which drives a stepper motor in response to an input pulse signal, a PWM controlling section which changes a duty ratio of the pulse signal fed to the driver to control a rotation of the stepper motor, a pulse encoder which rotates...

20060152188 - Rotating electrical machine and manufacturing method thereof: A stator coil is configured of a first group of six turns of conductive wire, and a second group also of six turns, with the first group of six turns being wound on a spool, leaving a gap the same as the diameter of the conductive wire between winds. Upon...

20060145639 - Brushless dc motor system and method of controlling the same: A brushless DC (BLDC) motor system and a method of controlling the same are provided. The BLDC motor system comprises a BLDC motor including a rotator and a stator, a plurality of switches, a DC current sensor, a position detector and a controller. The stator has a plurality of coils...

20060145638 - Control signals for single coil brushless motor: Control signal generation for a direct current brushless motor having a single stator coil with two free ends and same number of stator poles as magnet poles. It is describing how to cost effectively generate control signals required for operation of the motor. This is done without Hall sensors by...

20060145640 - Motor soft start controller: A motor soft start controller, which is composed of a rectifying and voltage-stabilizing circuit, a microprocessor, a motor switch electrically connected with a motor, a reset button, a signal amplifying circuit electrically connected with a touch piece, a motor driving circuit, and a current detecting circuit. The current detecting circuit...

20060145641 - Voltage compensating circuit for a sensorless type dc brushless motor: A compensating circuit for compensating the terminal voltage on the armature in a sensorless type DC brushless motor apparatus is described. The driving circuit of the motor apparatus outputs a three-phase power, and each phase is connected with a compensating circuit. The compensating circuit has a reference voltage, a resistance...

20060145642 - Motor drive control device: Disclosed is a motor drive control device which uses mechanical switches configured in an H-bridge shape and can protect the mechanical switches from being damaged and minimize a voltage chattering problem occurring upon switching on and off. The motor drive control device includes: two relay switching units which are coupled...

20060145643 - Transmission system combining an internal combustion engine and an alternator-starter: The invention relates to a transmission system in which the crankshaft (V) of a combustion engine (M) is coupled via a transmission device using flexible links, particularly of the belt type, to a shaft (1) of an alternator-starter (ATD), characterized in that it has a two-state coupling device, the states...

20060145644 - Motor control apparatus and motor control method: In response to detection of a skid of drive wheels based on an increase in angular acceleration α of a rotating shaft of a motor, the control procedure of the invention refers to a map representing a variation in maximum torque Tmax against the angular acceleration α and sets torque...

20060145645 - Power control apparatus for motor: A power control apparatus for a motor is disclosed. The power control apparatus includes: a moisture sensor for detecting moisture soaking into a housing including the motor; and a switching unit which is switched by an output signal of the moisture sensor, and switches on or off an AC power-supply...

20060145646 - Method and apparatus to automatically tune paper-feeding controller: A method and apparatus to automatically tune a paper-feeding controller included in a paper-feeding system of a printer by eliminating effects of disturbance and thus accurately and automatically calculating gain of the paper-feeding controller. The method of automatically tuning a controller in a paper-feeding system of a printer using a...

20060145647 - Robot controller: A robot control system for simultaneously controlling multi-axial robots each of which has actuators, a standard movement part being set in each of the robots, includes: a single main controller for calculating respective movement positions of the standard moving part on a movement route along which the standard moving part...

20060145648 - Signal processing device, signal processing method, signal processing program, recording medium storing the program, speed detector and servomechanism: The position information signal processor (410) calculates driving speed information (ωn) of the motor based on a difference between the position information signal (A sin θ, A cos θ) from the sensor and the internal position information (A sin θn, A cos θn) generated by the internal position information generator...

20060145649 - Control method and controller for ac motor: The control method and the controller for the AC motor includes a power converter (1) for outputting electric power to the AC motor (5); a torque limiting unit (6) for limiting a torque command relative to an arbitrary torque command; a voltage command calculating circuit (7) for calculating a voltage...

20060145651 - Sensing mechanical transitions from current of motor driving hydraulic pump or other mechanism: A circuit and method for detecting an operating transition of a mechanical apparatus driven by a hydraulic prime mover comprising a hydraulic pump driven by an electric motor, the operating transition causing a change in the force applied by the mechanical apparatus on the prime mover. A motor current sensing...

20060145650 - Speed sensorless control of an induction machine using a pwm inverter with output lc filter: A method of controlling of an induction machine using an inverter is disclosed with output LC filter. The method includes determining an inverter output current vector (iA), determining an inverter output voltage vector (uA), and forming a full-order observer having a system matrix (Â) and gain vector (K). The observer...

20060145652 - Motor drive controlling device and electric power-steering device: The present invention provides a motor drive apparatus and an electric power steering apparatus using the same, in which the motor can be vector controlled even if a motor position detection sensor such as a hole sensor which cannot output a precise and detailed rotation angle signal when the motor...

20060145653 - Control technique for limiting the current of an induction machine drive system: A method and apparatus for deriving phase voltage control signals for use in controlling current flow to an induction motor. The method may comprise obtaining an error term; converting the error term into a commanded voltage value; transforming the commanded voltage value into a commanded voltage vector; and converting the...