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JP4532663B2 |
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JP4529871B2 |
The device has an electronic control unit (7) for controlling an electrical motor (6) according to an operating state of an internal combustion engine (1), such that an actual physical magnitude is controlled. The unit stops the energy s...
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JP4532188B2 |
In a holding arrangement ( 101 ) for a medical-optical instrument ( 103 ), an electric motor is provided in a rotational joint ( 111, 119 ) to compensate a load torque occurring in this rotational joint. This electric motor is supplied w...
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JP4529666B2 |
A device for driving a load such as an electric motor for driving a fan mounted on an automobile includes a semiconductor power FET for supplying a load current to the load, a voltage detector for detecting a load voltage, a current dete...
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JP2010183793A |
To detect the angle of rotation of a rotor without using a large-scale sensor and without using a resistor not required for rotating a DC motor.The DC motor 1 can detect the angle of rotation of the rotor 4. The DC motor 1 includes: a DC...
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JP2010178467A |
To prevent carbon powder from being accumulated in a contact part between a brush and a rotor in a DC motor with brush.In the motor drive giving a driving signal to drive a DC motor with brush, a signal S, which causes the DC motor with ...
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JP2010178437A |
To provide a driver circuit in which the length of a dead time can be measured accurately.In the driver circuit 100, two output transistors MH1 and ML1 are provided in series between the first power voltage Vdd and a grounding potential....
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JP4523633B2 |
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JP4521779B2 |
A circuit for a series motor for a power tool is disclosed, wherein reliable switching is achieved by means of two electronic switches, without the use of a mechanically disconnecting switch. To this end, two electronic switches, prefera...
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JP4516656B2 |
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JP4516698B2 |
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JP4519471B2 |
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JP4506784B2 |
To surely detect a failure of a current detection circuit of an electric power steering device, and to switch a control system from a feedback system to an open-loop system when the failure is detected. A control device for an electric p...
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JP4508542B2 |
In a direct-current motor drive bridge circuit structured such that a pair of forward rotation switching elements and a pair of reverse rotation switching elements are alternately connected annularly, a direct-current motor is interposed...
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JP4507704B2 |
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JP4502152B2 |
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JP4502153B2 |
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JP2010154640A |
To automatically remove a foreign matter held between relay contacts associated with motor feeding of a motor driven power steering device while suppressing the further degradation of the relay contacts as much as possible. The cumulativ...
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JP4496573B2 |
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JP4497010B2 |
To provide a vehicle motor control device that achieves smooth and accurate steering control in a small steering range. A duty operator 24 sets a duty command value Du of an upper arm element to a value of prescribed times a duty command...
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JP4497703B2 |
A recording apparatus of the present invention includes a conveying means for conveying a recording medium, a conveying motor for driving the conveying means, a servo computing means for controlling the output directed to the conveying m...
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JP4490671B2 |
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JP4492732B2 |
The motor driving device includes a first function of supplying power to a motor so that the motor generates a driving force to drive a driven member, a second function of detecting a current flowing through the motor, a third function o...
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JP4495150B2 |
The invention relates to a series resistor assembly (1) for an electric motor (M), in particular for an electrically driven ventilating fan in a vehicle. Said assembly comprises a series resistor (2) for controlling the RPM of the electr...
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JP4492102B2 |
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JP4492215B2 |
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JP4491719B2 |
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JP4492033B2 |
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JP4493132B2 |
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JP4494990B2 |
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JP4494545B2 |
To obtain a driver of motor compressor for a car air conditioner suitable for a hybrid automobile having a plurality of power sources in winch the battery capacity can be reduced. A driver 15 for driving the motor compressor 17 of a car ...
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JP4487168B2 |
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JP4485755B2 |
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JP4487447B2 |
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JP4485782B2 |
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JP2010136611A |
To provide a current motor control device and method that can check the rotation frequency and direction of a direct current motor without wearing a brush or commutator. The direct current motor control device and the method are disclose...
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JP4483060B2 |
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JP4480325B2 |
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JP4480922B2 |
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JP4481752B2 |
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JP2010130804A |
To provide a configuration that properly reduces an increased drive current even when a drive current flowing in a DC motor is changed into an overcurrent state in a mobile terminal including a vibrator. A mobile terminal 1 includes a vi...
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JP4478966B2 |
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JP4479320B2 |
To change the characteristics of an electric motor in three stages through a simple circuit. In a first state in which a switch 86 for low speed is on and a switch 88 for high speed is off, the electric motor 58 has low-revolution, high-...
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JP4474662B2 |
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JP4475552B2 |
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JP2010123044A |
To detect an overcurrent condition in accordance with a wire range of duty ratio.The overcurrent protection circuit 12 is formed by a coil L1, a capacitor C1, a differential circuit 8, and a circuit made mainly of an overcurrent determin...
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JP4469886B2 |
According to the present invention, the operation of a diagnostic circuit within a load drive circuit, which has been built into an electronic control device, is checked without modifying the electronic control device or the like. The lo...
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JP2010119210A |
To detect a load of a DC motor compatible with various loads.A control part 1 which drive-controls a motor 3 includes: a motor drive voltage detection circuit 5; an angular acceleration calculation part 8a connected to a motor rotation s...
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JP4468031B2 |
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JP4465829B2 |
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