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JP4235145B2 |
A motor controller is provided including a synchronous motor, a feed back detector for detecting the position and velocity of the rotor of the synchronous motor, a detector for detecting a magnetic pole position of the rotor of the synch...
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JP4232664B2 |
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JP4230276B2 |
A control apparatus for a brushless DC motor that rotatably drives the brushless DC motor including a rotor having a permanent magnet, and a stator having stator windings of a plurality of phases that generate a rotating magnetic field f...
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JP2009027828A |
To suppress the vibration of a rotor 11 of an electric motor 9a for blower, in an air conditioner for vehicle.The air conditioner for vehicle comprises the electric motor (synchronous motor) 9a and a control circuit 25, and the control c...
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JP4215504B2 |
The starting rotor angle of an electric motor (10) is found by applying a periodic voltage, measuring the corresponding current pattern, repeating this process and finding the ratio of the fundamental (I1) to the first harmonic (I2) wave...
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JP2009017774A |
To provide an apparatus for controlling soft start or soft stop of a three-phase AC motor (1), a so-called soft starter, which is furnished to start heavy mechanical, electrical, or hydraulic drives.In order to save space in individual o...
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JP2009011360A |
To solve the problem that it takes time to stop the microcomputer of a control circuit since electrostatic energy is supplied to the control circuit even after a relay is turned off during an operation and an AC power source is cut off i...
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JP4209900B2 |
A method for detecting a loss of a phase in a multiphase rotating field machine, the method comprising providing a first electrical current into the machine windings to cause the current vector to assume a first current vector position, ...
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JP4207365B2 |
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JP4206434B2 |
A motor control circuit (10) for a power tool includes a function switch (39) which has a first battery contact (40), a speed control contact (41), a bypass contact (42) and, a second battery contact (44) connected in that order in a lin...
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JP4203915B2 |
To reduce the capacity of a compression space of a compressor, the size of the compressor as a whole, and the size of an outside unit on which the compressor is mounted and a refrigeration unit (including an air conditioner), while maint...
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JP4203641B2 |
To realize a revolution control device for laundry apparatus which realizes rotation control of a wide range from a low speed to a high speed by precisely detecting the number of revolutions of a motor in the area of the small number of ...
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JP4196345B2 |
The invention provides a valve controller of a motor utilizing type for improving control accuracy and reducing cost. The valve controller controls valve opening and closing of an engine by utilizing rotation torque of the motor, and has...
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JP2008543267A |
A single or multiphase alternating current electric motor or synchronous generator includes main windings and additional windings that perform de-saturation of the magnetic field of the main windings. Each additional winding is fed throu...
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JP4180407B2 |
To provide a light fixture control system with which an inrush current is prevented at the time of motor activation, and a light fixture is prevented from rapidly dimming. In a vehicle including a light fixture to be driven by an output ...
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JP4176850B2 |
The driving circuit system constituted by the multiple DC power driving devices of the DC or AC motors in mixture of series and parallel combinations, wherein it is characterized in that the DC power driving device (including armatures o...
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JP4173554B2 |
The method for detecting after-running of electrical servomotors with incremental position detection, particularly for servomotors in motor vehicles, includes detecting position signals of position indicators and storing the detected sta...
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JP4170098B2 |
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JP4161872B2 |
To provide an internal combustion engine starting device capable of achieving a sufficient field flux without enlarging an electric motor for starting an internal combustion engine even when the electric motor for starting the internal c...
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JP2008236828A |
To provide a servo amplifier which can process power recovery in safety after emergency stop.In a servo amplifier 1 for conducting a servo motor 5 by turning a servo conduction command from a host apparatus 4 on, emergency stopping the s...
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JP4159675B2 |
has RC circuit (4) with smaller rise time than fall time. circuit discharges whether switch is closed or open
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JP2008223870A |
To enable precise setting of an initial stop position of an electric motor in a differential gear with a differential limiting mechanism using low resolution as a rotational angle sensor of the electric motor, reducing the load of a cont...
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JP2008223835A |
To suitably set an initial stop position of an electric motor to operate a friction multiple clutch of a differential gear with a differential limiting mechanism.A control device of the differential gear with the differential limiting me...
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JP4154639B2 |
A motor starter temperature protection control (10) is disclosed in which an ambient temperature sensor (36) is positioned on an inside cover of the motor starter (12) to sense temperature across the power poles (22, 24, 26) and heat sin...
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JP4150868B2 |
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JP4146498B2 |
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JP4146570B2 |
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JP2008193859A |
To provide a DC motor controller which stably controls a traverse motor, even if the applied voltage of the traverse motor is not larger than the starting voltage.The DC motor controller is provided with a determining means 341 for deter...
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JP2008187763A |
To provide a technique for properly controlling the transient torque at start of an induction motor.A drive circuit is inserted between a drive power source 21 and the induction motor 22. A reactor 23 and a resistor 24 are connected in s...
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JP4133434B2 |
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JP4131588B2 |
To provide control equipment, capable of reducing capacity and saving energy of a switching element constituting a drive means at the driving of a DC motor. Control equipment is constituted of DC fan motors 7, 8 and a plurality of switch...
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JP4125627B2 |
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JP4125817B2 |
The present invention relates to a circuit arrangement with a digital controller for operating an electric motor and a method for starting an electric motor. In electric motors, it is known that they require a considerably higher current...
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JP4121100B2 |
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JP4108543B2 |
To provide a power circuit that can prevent an adverse effect such as an operation stop of a device caused by a load variation at the start of motor drive while sharing a power supply in a control means and in a motor, and can achieve po...
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JP2008141823A |
To make protection possible by detecting a failure without causing malfunction even while a starting current is flowing in a motor 21.A motor protective relay has a dependent time-lag element 1 and a definite-time element 2. It is config...
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JP4103566B2 |
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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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JP4097034B2 |
A motor starter for use with a motor (20) having a main winding (M) and a start winding (S). The starter has a PTC thermistor (30) connected in series with the start winding (S). A triac (40) is connected between PTC thermistor (30) and ...
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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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JP2008125247A |
To achieve stable starting load distribution of a plurality of electric motors without remarkably increasing power capacity.A driving controller of a plurality of motors includes a means 38 which starts a clock when a first motor 21 is s...
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JP2008114698A |
To provide an electric pump control device capable of reducing the change in the voltage of a power source caused by a rush current when an electric pump is turned on, and reducing the odd feeling associated therewith, and an internal co...
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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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JP2008515368A |
A method of starting and apparatus for starting a multiphase electrical machine is disclosed. The aim is to reduce oscillatory pulsation in torque generated by the motor and inrush current that occurs shortly after start-up. The starting...
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JP2008109845A |
To improve a read image quality by driving a motor at an appropriate initial Duty.A motor controller includes: a control unit which applies an initial power for starting the moving of a conveyance target to start the rotation of the moto...
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JP4079694B2 |
To realize the operation of a wiper arm that does not make a user feel uncomfortable without using a CPU for a motor driving circuit in a wiper device for reciprocating the wiper arm by the normal and reverse rotation of a DC motor M. Th...
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JP4078559B2 |
An apparatus for controlling a rotational motion of a motor is disclosed which includes: a signal generator generating a rotational state signal indicative of a rotational state of the motor; and a controller producing a control signal f...
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JP4079554B2 |
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JP4080864B2 |
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JP4078799B2 |
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