Electricity: motive power systems inventions 08/06

20060192505 - Bellows-supporting structure and movable stage device: A structure for supporting a bellows (1) from the inside has a guiding track (8) provided inside the bellows and extending in the axial direction of the bellows. A moving member (10) is provided so as to be movable in the bellows' axial direction on the guiding track. The moving...

20060192506 - Ride-on product motor control pcb: A ride-on toy vehicle including an on/off input device, a direction input device and a speed input device. A pair of electrical motors are connected by a switching circuit to the battery in parallel or in series based on the speed input from the speed input device and in a...

20060192507 - Speed control for an electric linear actuator such as a trailer jack and the like: A trailer jack system includes an electric linear actuator having an electric motor, a source of electric power, and a controller that supplies a first voltage to the electric motor when the electric linear actuator is loaded and a second voltage to the electric motor when the electric linear actuator...

20060192508 - Electrical drive apparatus having a structure-borne noise sensor: A drive apparatus includes an electric motor (9), a control device (2) having a microprocessor (3) and a motor control module (5), which interacts with a power module (7) for the purpose of adjusting desired electrical parameters for the electric motor (9), a connecting line (8), which connects an output...

20060192510 - Apparatus and method for motor control using table: In an apparatus of controlling a motor in a battery vehicle, a current command generation section has a table, and generates an exciting command current and a torque command current by referring to the table based on a torque command. A converting section generates 3-phase command voltages from the exciting...

20060192509 - Inverter apparatus suitable for battery vehicle: An inverter apparatus is composed of an insulated metal substrate, a conductive stud, a printed circuit board, a conductive spacer, and a bus bar. An inverter output stage is mounted on the insulated metal substrate. The conductive stud is coupled to a main surface of the insulated metal substrate, and...

20060192511 - Brushless motor: Small brushless motor having high output and small torque ripple. The brushless motor includes induction voltage adjusting means. With this, induction voltage of each phase of the stator is adjusted into a flatly spread waveform having no abrupt variation where odd-numbered of order harmonic is superposed, thereby obtaining a small...

20060192512 - Motor controlling method and apparatus thereof: A voltage detection section and current detection section detect a voltage and current supplied to a motor, and the detected voltage and current are supplied to a position detection section. An angular speed output from the position detection section is supplied to a differentiator to output an angular acceleration. A...

20060192513 - Motor controlling method and apparatus thereof: A voltage detection section and current detection section detect a voltage and current supplied to a motor, and the detected voltage and current are supplied to a position detection section. An angular speed output from the position detection section is supplied to a differentiator to output an angular acceleration. A...

20060192514 - Calibration method: In some preferred embodiments of the present invention, a method of performing calibration of an optical axis of a sensor installed on a hand of an arm of a robot by obtaining misalignment of the optical axis of the sensor relative to the hand or by obtaining misalignment of the...

20060192515 - Indurstrial robot controlling device: To this end, in a control apparatus of an industrial-purpose robot (11) equipped with an electromagnetic type brake (23) which locks a shaft of a motor, the control apparatus is provided with a first relay contact (24) which is closed when the electromagnetic type brake (23) is released, and a...

20060192516 - Motor controlling method and apparatus thereof: A voltage detection section and current detection section detect a voltage and current supplied to a motor, and the detected voltage and current are supplied to a position detection section. An angular speed output from the position detection section is supplied to a differentiator to output an angular acceleration. A...

20060192517 - Geared motor: A motor encoder is mounted on a motor shaft of a geared motor 1, and the origin position is detected by using a Z-phase signal. An absolute value encoder with a precision that allows the number of motor rotations to be determined is mounted on an output shaft 4 of...

20060192518 - Multi-motor switched reluctance traction system: A switched reluctance traction system is provided for work machines. The switched reluctance traction system may include a plurality of switched reluctance motors. Each switched reluctance motor may include a stator with a plurality of stator poles and a rotor with a plurality of rotor poles. The switched reluctance traction...

20060192519 - Forklift and method for controlling induction motor applied to the same: A forklift having a cargo apparatus, the responsiveness of which to the operation by a user is improved. The forklift has: a DSP which generates a frequency instruction f* in response to the operation to a cargo apparatus operation lever, a voltage instruction V* from the frequency instruction f* by...

20060192520 - Cancellation of dead time effects for reducing common mode voltages: Methods and apparatus for canceling dead time effects in the form of common mode voltages produced by a three-phase power conversion device in a rectifier/inverter variable frequency drive (VFD) system includes limiting the voltage difference between phase voltages at certain switching transition times to an amount δ, that is a...

20060192521 - Driving apparatus for a motor: A motor driving apparatus includes: a current instruction calculator, for calculating a current instruction value based on a deviation between a speed instruction value and an estimated speed value; a current controller, for controlling an output current based on the current instruction value; a frequency instruction calculator, for calculating a...

20060192522 - Modulation methods and apparatus for reducing common mode voltages: Methods and apparatus for reducing the common mode voltage generated by eliminating zero-voltage vectors in a rectifier/inverter variable frequency drive (VFD) system includes comparing three phase voltages to each other to determine a maximum voltage in one phase, a minimum voltage in another phase and a middle voltage in still...

20060186839 - Bonding apparatus: A wire bonding apparatus 10 including a joining machine unit 20 for joining a wire to a subject device 4, a measurement unit 50 for measuring the connection state between the subject device 4 and the wire 24, and a control unit 40 for controlling the operation of the entire...

20060186840 - Amphibious off-road vehicle: w

20060186841 - Electronic line shaft: A method and assembly for synchronizing machine operations, the assembly comprising a reference generator for generating a speed reference signal and a position reference signal, a plurality of slave units, each slave unit including, a mechanical device, a separate motor linked to and driving the mechanical device and a separate...

20060186842 - Vehicle control unit and vehicle: A control unit controls a vehicle having a body to allow its user to step on, a power generator arranged to generate power that drives the body, and a load sensor unit arranged to output a load value representing a load that has been applied to the body. The control...

20060186843 - Method and apparatus for controlling motor: An apparatus for controlling a motor includes a plurality of switching elements configured to switch energizing phases of the motor; and a driving unit configured to drive at least one of the switching elements. The driving unit drives a predetermined switching element from among the switching elements so as to...

20060186844 - Movable barrier operator: A movable barrier operator having an electrical motor responsive to control signals for moving the barrier, a controller to control the barrier movements, and two command apparatuses for generating command inputs, which command apparatuses are located remotely from each other. The first command apparatus is mounted in a location remote...

20060186845 - Servo controller: In a servo controller according to the invention, a position feedback correction unit (3) calculates a first-axis position feedback signal (pmfb1) based on a first-axis position (pm1) as a self-axis position, and a second-axis position (pm2) as an other-axis position; and a deviation between a model position (pal) and the...

20060186846 - Sensorless control of two-phase brushless dc motor: A motor control system for a two-phase brushless DC motor uses measured EMF voltage from the passive set of stator coils to control commutation. A microcontroller receives the EMF voltage measurement and compares it to a threshold voltage value, which may be speed-dependent for advance commutation at high motor speeds....

20060186847 - Control arrangement for a control element for opening and closing a vehicle panel: A control arrangement for a control element for opening and closing a hatch in a motor vehicle has a motorized vehicle panel. The control element is designed in such a way that, upon a short actuation of the control element, depending on the direction of actuation of the control element,...

20060186848 - Device for steering a vehicle: A device for steering a vehicle, particularly a helicopter or even a simulator, comprising a handgrip that can be moved in a manner that is linear to the drive of a drive device, particularly the power unit or motor. The linear motion of the handgrip is coupled with a rotational...

20060186849 - Servo control device and method of adjusting servo system: The invention relates to a numerical control (NC) device, and provides a servo control device that displays, by a two-dimensional image, evaluation of control precision of a servo system, and that can adjust the servo system according to a visual method, and provides a method of adjusting the servo system....

20060186850 - Fan motor drive control apparatus: A fan motor drive control apparatus comprises a plurality of drive circuits for driving respectively a plurality of fan motors, and a speed change-over control circuit for transmitting a control signal for changing over speeds of the fan motors, to the plurality of the drive circuits, wherein each of the...

20060186851 - Method and system for limiting the current output by a speed controller operating according to a u/f control law: The present invention relates to a method for limiting the current output by a speed controller (V) for three-phase asynchronous electric motor (M), said controller (V) operating according to a control law (LC) of pure U/F type. Said method is characterized in that it consists in calculating with the aid...

20060186852 - Servo drive and encoder signal processing ic: A servo driver (3) includes: an input section (11) for input-specifying the type of an encoder (7) at the side of an actuator (2); a control section (13) for generating a control signal (12) according to the type input; and an encoder signal processing IC (20) for switching the input...

20060186853 - Method for identifying the rotation of a stepper motor driving at least one hand of a clock: In a method for identifying the rotation of a stepper motor which includes a rotor provided with a motor coil driving at least one hand of a timepiece, wherein a drive voltage pulse and a first detection voltage pulse are delivered to the motor coil, and wherein the position of...

20060186854 - Global closed loop control system with dv/dt control and emi/switching loss reduction: A gate driver for a power switch, comprising a gate drive circuit coupled to the gate of the power switch for at least one of turning on and turning off the power switch; a gate voltage control circuit in the gate drive circuit for controlling a voltage applied to the...

20060186855 - Method and device for the control of a three-phase inverter: A method of controlling an inverter to includes determining the components of a phasor representing the output current from the inverter in a fixed reference system; determining the components of the current phasor in a reference system rotating at a velocity equal to the velocity of rotation of the phasor...

20060181230 - Switching power supply: A switching power-supply unit uses a time when a transformer voltage Vt inverts due to a rectifier diode (Ds1) entering a non-conducting state as a trigger, and a first switching control circuit (CNT1) turns on a first switching element (Q1) after a predetermined delay time passes. A second switching control...

20060181231 - Optimal fan presence detection: Detecting the presence of an electric fan is described. A current sink circuit is coupled to a pulse width drive output of a fan control circuit. A logic state in a logic input buffer is defined based on current flow through the current sink. The logic state indicates if a...

20060181232 - Advanced programmable closed loop fan control method: A fan control system and method that maintains the operating temperature of computer and electronic devices or components at about a predetermined control level to minimize power consumption and audible noise. The fan control system is a programmable closed loop system including a temperature sensor, first and second fan controllers,...

20060181233 - Light-splitting device: A light-splitting device comprises a filter element, a first transmission element, a second transmission element, and a power element. In this case, the first transmission element is disposed on one side of the filter element. The second transmission element connects with the first transmission element. The power element connects with...

20060181234 - Automatic sensing of safe-operation sensor apparatus and method: A movable barrier operator having a microprocessor (10) or other programmable platform will automatically work in a safe and appropriate manner both with and without safe-operation sensors (13). Once a safe-operation sensor is detected, the operator will thereafter function in a fashion that requires the continued presence of such sensor....

20060181235 - Ac drive apparatus, vehicle control apparatus, and power conversion method and vehicle control method: A motor is driven with variable frequency AC power converted from DC power, and an AC output power from the motor is converted to DC. In the conversion, an electromotive force regenerated by the motor is consumed by a plurality of resistors. When the consumption of the electromotive force is...

20060181236 - Method and a system for programming an industrial robot to move relative to defined positions on an object, including generation of a surface scanning program: A method and a system for programming an industrial robot to move relative to defined positions on an object. The system includes a geometrical model of the object, the real object, and an industrial robot. A plurality of measuring points are generated corresponding to different points on the surface of...

20060181237 - Method of stall detection for stepper motor system: This invention detects a stall in a stepper motor by determining a motor winding current for each stepper pulse and determining if the winding current of a particular stepper pulse meets predetermined criteria. The motor winding current may be determined by measuring a voltage across an ON field effect transistor...

20060181238 - Variable speed motor: A variable speed motor is disclosed. The variable speed motor includes: a main winding including first and second main windings, and an auxiliary winding including first and second auxiliary windings, wherein the main winding and the auxiliary winding are wound on a stator to form a plurality of poles; and...

20060181239 - Safety interlock and protection circuit for permanent magnet motor drive: A circuit for protecting against controller failure wherein the controller provides control signals for controlling a DC to AC inverter fed by a DC bus and driving a permanent magnet motor, the circuit comprising a first circuit for monitoring the DC bus voltage and, in the event the DC bus...

20060181240 - Method and system for managing the voltage on the dc bus of a speed controller for an ac motor: The present invention refers to a method and to a system for managing the voltage (Vbus) of the DC bus of a speed controller for an AC electric motor (M) linked to a current distribution network (Rd). The method is characterized in that it consists in: comparing a value of...

20060175992 - Dual motor arrangement and control method: A dual motor arrangement includes a first motor M1, a first MOSFET Q1 constructed and arranged to control operation of the first motor, a second motor M2, a second MOSFET Q2 constructed and arranged to control operation of the second motor, an RFI filter structure L1, C_RFI, a freewheeling circuit...

20060175993 - Alignment apparatus, exposure apparatus, and device manufacturing method: An alignment apparatus which moves a object comprises a first structure having a holding member which holds the object, a second structure having a magnet which constitutes a linear motor, the linear motor drives the first and second structure, and a flow passage formed between the holding member and the...

20060175994 - Controlling the release of a brush motor which has applied a load: A method for controlling the release of a brush motor which has applied a load includes several steps. One step includes applying a release current to the brush motor to rotate the brush motor in a direction toward releasing the applied load of the brush motor. Another step includes sensing...

20060175995 - Power output apparatus, motor vehicle equipped with power output apparatus, and control method of power output apparatus: In the vehicle of the invention, when the temperature of an inverter 42 for driving a motor MG2 linked to front wheels 62a and 62b reaches or exceeds a preset restriction start temperature, the drive control of the invention controls the inverters 42 and 43 to gradually decrease the output...

20060175996 - Regenerative motor propulsion systems: A vehicle or watercraft regeneration system includes at least one electric motor capable of generating electricity and a controller for the at least one motor; wherein the controller to optimize the efficiency of the regeneration. The controller can optimize efficiency by including comprises circuitry for biasing the electric motor during...

20060175997 - Device and method for controlling prime mover: An increase in angular acceleration α of a rotating shaft of a motor, which outputs a torque to a drive shaft linked to drive wheels, may cause a skid on the drive wheels. In response to detection of a skid, the control procedure of the invention sets a maximum torque...

20060175998 - Vehicle speed dependent compensator for electric steering systems: An electric power steering control system comprising: an electric motor disposed in a vehicle to apply torque to a steerable wheel; a torque sensor disposed in the vehicle for detecting a steering wheel torque and generating a torque signal indicative thereof; a vehicle speed sensor, the vehicle speed sensor generating...

20060175999 - Load and speed sensitive motor starting circuit and method: A circuit and method measures the voltage at the main motor winding (1) and detects the points in the electromagnetic wave cycle at which this voltage “crosses” zero. The method and circuit also measures the voltage at the auxiliary motor winding (2). The voltages measured in the main winding (1)...

20060176000 - Control and alarm system for sump pump: A control system for a sump pump driven by an AC motor includes an AC power line having an input adapted for connection to an AC power source and an output adapted for connection to the AC drive motor. A controller is connected to a controllable switch in the AC...

20060176001 - Method for detecting a possible collision of at least two objects moving with respect to each other: A method is for detecting a possible collision of at least two objects moving with respect to each other by simulating the intended relative motion of the two objects. At least one of the objects is assigned an envelope surrounding the object, the path line represents the relative motion of...

20060176002 - Controlling relative movement between a workpiece and a tool of a machine tool: Devices and related methods of controlling relative movement between a tool of a machine tool and a work piece including dividing a total desired relative tool to workpiece movement in a direction of an axis into a first movement component and a second movement component; controlling the first movement component...

20060176003 - Data storage apparatus and control method thereof with compensation: Embodiments of the invention provide a data storage apparatus and its control method capable of accurately reading/writing data. A data storage apparatus in an embodiment of the invention comprises: a servo control section which, based on servo data stored on the storage medium, generates servo control data to control the...

20060176004 - Data storage apparatus with compensation for vibration and control method thereof: Embodiments of the invention provide a data storage apparatus and its control method capable of accurately reading/writing data. In one embodiment, a data storage apparatus comprises: a servo control section which, based on servo data stored on the storage medium, generates servo control data to control the position of the...

20060176005 - Motor-drive control device and electric power steering device using the same: In order to precisely control rotation of a motor, it is necessary to precisely detect a position of a rotor. Even if an inexpensive position detecting sensor having relatively low precision such as a Hall sensor is used, it is possible to provide a motor drive control apparatus capable of...

20060176007 - Method for stepper motor position referencing: A method for referencing a polyphase stepper motor by monitoring the current step response in at least one driven phase is presented. The coil current step response is compared to past step responses in order to determine when an increase in or maximum load is present. A combination of step...

20060176006 - Stepping motor speed control method and apparatus suitable for the same: A speed control method of controlling a stepping motor to have a uniform instantaneous speed and an apparatus suitable for the same are provided. The stepping motor speed control method includes: calculating a repeated speed error for each phase while rotating a stepping motor at a constant speed and storing...

20060176008 - Circuit and method for control of a stepper motor: A circuit for the control of a stepper motor having a rotor configured as a permanent magnet and a stator configured of at least first and second energized excitation coils enclosing the rotor. Each end terminal of the first excitation coil is connected to the positive pole of the supply...

20060176009 - Electromagnetic rotating machine: In order to obtain an electromagnetic rotating machine of lightweight and high energy efficiency, which produces big torque for rotating a large-diameter fan, a coil A and coil B as excitation coils are disposed on an inner peripheral surface of a fan casing so as to face an outer circumference...

20060176010 - Power converter and vehicle equipped with power converter: A power source supplies an input voltage. A voltage conversion circuit converts the input voltage from the power source into an operating voltage to be used to drive an electric load. A detection circuit measures an insulation resistance value on the output side of the voltage conversion circuit. A control...

20060170382 - Linear motor force ripple identification and compensation with iterative learning control: Embodiments of the present invention are directed to compensating for force ripple of an apparatus driven by a force produced by a linear motor. In one embodiment, a method of compensating for force ripple comprises generating force commands for a trajectory starting at a plurality of starting positions of the...

20060170383 - Motor drive apparatus driving 3-phase brushless motor without using hall sensor: A motor drive apparatus includes a comparison circuit comparing voltages of 3-phase coil terminals and the voltage of a neutral point terminal of a 3-phase brushless motor to determine which voltage is higher/lower, a zero ampere current detection circuit detecting, based on the comparison result by the comparison circuit, that...

20060170385 - Livestock feed scraper: A device for placing food on a floor within reach of one or more animals that are feeding along a feeding rail. The device is mounted on or near the feeding rail and has an extendable and retractable arm connected to a plow. The arm is storable above the floor...

20060170384 - Swing device of industrial robot: There is provided a pivoting apparatus of an industrial robot including: a brake 40 that is fixed to a motor shaft 30s of a motor 30 to halt the motor 30; an encoder 50 that is fixed to the motor shaft 30s to detect the pivoting angle of the motor...

20060170386 - Toroidal propulsion and steering system: An apparatus comprises a body having a torus skin with inner and outer layers, and a drive system configured to propel the apparatus by moving the inner layer relative to the outer layer. The active skin propulsion system allows movement and steering of a device. A drive system includes a...

20060170387 - Method and control circuit for triggering an electric motor with the aid of a pulse width modulation signal: A method for triggering an electric motor with a pulse width modulation signal, the pulse width modulation signal having a triggering frequency and a pulse duty factor, the electric motor being controlled as a function of the pulse duty factor via a supply voltage line, at least one electrical component...

20060170388 - Optical image stabilizer and a method of controlling the optical image stabilizer: An optical image stabilizer includes an optical system including at least one image shake counteracting optical element movable in a plane orthogonal to an optical axis; at least one stepping motor for moving the image shake counteracting optical element in the plane; at least one shake velocity sensor which senses...

20060170389 - Medium voltage switched reluctance motors used in traction applications: A work machine having an electric propulsion system includes at least one traction device and one or more medium voltage switched reluctance traction motors operating at a voltage level between 1,000 volts and 6,000 volts. The motors provide driving power to the at least one traction device....