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JP4146498B2 |
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JP4144446B2 |
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JP2008199729A |
To prevent malfunction of a power supply unit by preventing a counter electromotive force induced in a first load section, when power supply is interrupted from being supplied to other load section.A power supply section 13 supplying DC ...
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JP4140388B2 |
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JP2008193790A |
To achieve smooth stop control of a turbocharger with an electric motor.An electric motor driver E for the turbocharger with an electric motor supplies a motor current of each phase to a permanent magnet synchronous motor 3, which forms ...
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JP2008189440A |
To restrict over-discharge of an electric double-layer capacitor during power run of an elevator.The device is provided with a first voltage detection part 9 to generate a first voltage detection value by detecting the voltage on a capac...
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JP4137652B2 |
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JP4137854B2 |
A control device for safely controlling an electrical motor during decelerating and stopping operations of the motor. The control device includes a control part for controlling the decelerating and stopping operations; a monitoring part ...
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JP4136484B2 |
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JP4131301B2 |
An electric motor control apparatus (40) includes an electrical current control apparatus (60) which is operable to limit current to an electric motor (42). When the electric motor (42) is a three-phase motor, three current limiting swit...
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JP4131146B2 |
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JP4133054B2 |
The method involves operating the motor sequentially in both motor and generator modes with non-zero conducing periods (t1-t2,t3-t4) within a phase period duration (T) of the converter in relation to at least one winding. The drive or br...
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JP2008530971A |
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 moni...
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JP4126510B2 |
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JP4125627B2 |
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JP4124447B2 |
The invention makes an output sharing of an engine and an electric motor proper so as to suitably drive a load. When a throttle opening degree variation amount DeltaV is within a DeltaV 1 , an engine E can drive a power generator G at a ...
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JP4118107B2 |
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JP4118841B2 |
For providing a controller apparatus for a synchronous motor and a controlling method thereof, enabling to be manufactured, easily and cheaply, and to obtain a lock mechanism, but without necessity of mechanisms, such as, an electromotiv...
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JP4120708B2 |
Specific anomalies and details of failures as well as measures thereagainst are described that might possibly occur in electric power converters that drive and control permanent-magnet synchronous motors. An electric power converter capa...
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JP4119518B2 |
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JP2008155023A |
To hold down the cost of a washing machine by eliminating a high-power resistor in braking a motor of the washing machine, and to heighten the reliability.This washing machine 10 includes a motor 12, an inductive winding device, a motor ...
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JP2008160943A |
To suppress the frequent execution of error processing, and to prevent a motor from being stopped when a driven body is in an improper state.(a) This motor control device is a sensor which outputs a rectangular wave-shaped signal. The se...
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JP2008524980A |
The invention relates to a control circuit for controlling a DC voltage power supply, whereby the control circuit comprises a switching element connected in series to the motor and a bypass switch connected in parallel to the electromoto...
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JP2008161049A |
To provide an electric braking device, especially for a sheet-fed printer, capable of accomplishing its purpose by a comparatively small-sized mechanical braking part.A drive motor 13 is connected to a DC voltage intermediate circuit via...
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JP2008154335A |
To provide an inverter in which incorrect detection of DC voltage rise of the inverter and incorrect overvoltage suppressing operation can be prevented, and to provide a method for suppressing overvoltage.An overvoltage suppressing secti...
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JP4112569B2 |
While a PWM-controlled, FET-switched three-phase motor (26) is operating in a mechanical damping mode, a single current sensor (32) is used to measure current in the motor (26). When mechanical feedback into the motor (26) exceeds a pred...
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JP2008148376A |
To obtain a variable speed drive controller of a motor equipped, as a part thereof, with a plurality of AC motors for powering operation and regenerative operation and ensuring high efficiency and high power factor through an inexpensive...
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JP4104755B2 |
Each supply phase (u, v, w) is provided with a current sensor (Cu, etc.) whose output is applied to a standardizing interface (C1) as a voltage proportional to the phase current. The interface produces output currents (Inu, etc.), propor...
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JP4097412B2 |
To provide a wipe controller capable of moving two overlapping wiper blades without collision. When angular speed of the first wiper blade 10 exceeds a predetermined value while the first wiper blade 10 is within an overlapping wiping re...
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JP4099647B2 |
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JP4099503B2 |
A fixed-position stop control apparatus (10) includes: a move-instruction generating means (22) for generating a move instruction for each control cycle; a position loop control means (25) for position controlling a rotation shaft (61) f...
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JP4100029B2 |
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JP2008131744A |
To provide a power supply system which can consume the regenerative electric power from a motor device while suppressing heat generation.When power is generated by a motor device, the regenerative power is fed back from the motor device ...
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JP2008131761A |
To provide a more reliable driving device wherein even when a trouble occurs in an inverter, breakage of the inverter due to rise in the induced voltage of a motor is prevented.The driving device includes: an inverter 6 that converts pow...
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JP4094259B2 |
To provide a wiper controller preventing interference by coordinating two overlapping wiper blades even when a mode is unexpectedly changed. When the high-speed mode is newly selected by a wiper switch 2 in a state selecting the low-spee...
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JP4096474B2 |
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JP2008118771A |
To avoid collision of a mobile (302) while relaxing impact due to brake torque in a device 300 for positioning the mobile (moving table 302) precisely by performing positional control in a m unit using a servo motor 208.In the emergency ...
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JP4088877B2 |
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JP4085375B2 |
A controller has a plurality of control units that are mutually connected by a communication line and are set at different places of an automobile, each corresponding to a different one of its power windows and serving to control its ope...
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JP4086370B2 |
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JP2008100534A |
To provide a ship propulsion machine and its operation control method capable of rapidly stopping the ship without complicating the structure.The ship propulsion machine 10 is a hybrid type ship propulsion machine including an engine 14 ...
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JP4084982B2 |
A control circuit (2) has a memory (2a) into which drive data which represent drive currents to be supplied to the respective coils (24-26) at each of preset angular positions of the rotor (1) are stored. The control circuit reads the dr...
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JP2008099554A |
To provide maintenance inspection which can be started in an early stage after interrupting AC voltage while ensuring high reliability, in the inverter apparatus and the electric motor drive arrangement, to reduce installation space ther...
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JP4081101B2 |
An apparatus for supplying a power to a motor for driving a mechanism that conveys a cartridge of a storage medium includes an accumulating unit that accumulates a regenerative power generated by the motor in a capacitor; and an adjustin...
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JP2008087874A |
To provide a printer capable of transmitting power of a motor for driving a planetary gear to a driven part properly.This printer is provided with the driven part 32, the motor 38 for driving the driven part 32, a driving gear 39, a driv...
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JP4077326B2 |
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JP4074497B2 |
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JP4062967B2 |
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JP4059213B2 |
If a traveling speed of a carriage calculated by a speed converter is larger than an estimated speed in a deceleration section, braking is conducted by a braking method corresponding to a manipulated variable generated by a drive control...
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JP2008054443A |
To start and stop the driving of an electric motor by using a switching element, to shorten stop time of the electric motor, and to surely implement rotation determination in a vehicle electric motor drive circuit.The motor drive circuit...
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