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JP5052046B2 |
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JP5053397B2 |
An electric vacuum valve includes: a valve part 22, which includes a first connection port 51, a second connection port 52, a valve chamber 53, and a valve seat 54; a feed screw 34 in connection with a step motor 27; a spindle 36; a feed...
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JP5046826B2 |
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JP2012186897A |
To stably eliminate effects of noise from an encoder signal even at a motor speed change.An encoder signal filter device 90 having an encoder 105 for detecting a shaft angle of a stepping motor 104 and control means 91 for applying a spe...
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JP5036592B2 |
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JP5030012B2 |
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JP5027423B2 |
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JP5016797B2 |
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JP5016636B2 |
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JP5016942B2 |
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JP5016637B2 |
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JP5016633B2 |
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JP2012163546A |
To allow a motor to be driven reliably even when a power voltage suddenly changes due to change of a charged state of a secondary battery during driving of the motor.A motor drive device 100 includes: a charge detection and backflow prev...
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JP5011111B2 |
The present invention relates to a circuit for detecting a functional status of an electro-motor. Typical electro-motors need additional components to identify the functional status of the motor. This means additional weight for such mot...
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JP5008987B2 |
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JP5005590B2 |
A timer circuit includes a storage unit to store a series of first data content relating to a time into a specified address area, a target value generation unit to read the first data content from a read address of the storage unit and t...
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JP4998175B2 |
To provide a vehicular headlamp device capable of smoothly moving a swivel lamp by preventing a loss of the synchronism of a stepping motor by reducing an over-shoot quantity and an under-shoot quantity when the stepping motor is stopped...
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JP5000342B2 |
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JP4997631B2 |
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JP4995591B2 |
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JP4993600B2 |
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JP2012147585A |
To provide a driving method for a stepping motor which enables secure stepping operation by using low electric power consumption, a driving device for a stepping motor and electronic apparatus using the driving device.Pulse output sectio...
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JP4989612B2 |
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JP4987302B2 |
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JP4979646B2 |
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JP2012135098A |
To detect a rotating state of a rotor and appropriately drive a stepper motor.A control circuit 52 controls a drive circuit 32 and intermittently applies drive pulses comprising comb tooth pulses to an exciting coil 114. A first peak hol...
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JP4972318B2 |
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JP2012127527A |
To switch the operating speed of a valve for controlling the flow path of a refrigerant in accordance with the operating mode of a device.A cooling device includes a refrigeration cycle 500 configured by successively connecting a compres...
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JP2012130165A |
To suppress rotation unevenness of a stepping motor which results from a detection error between first current detection means connected to a first exciting coil of the stepping motor in series and second current detection means connecte...
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JP4966046B2 |
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JP4959779B2 |
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JP4962702B2 |
A pointer measuring instrument capable of indicating "zero" on an indication panel by a pointer even if a play (backlash) is present in gears. The measuring instrument comprises a pointer reference position setting means (7a, 7b) for det...
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JP2012120309A |
To prevent increase in size of a connector on a control board that is connected to a wiring, by reducing the size of the wiring connected to a drive source of an actuator.A drive circuit which is provided to each of a plurality of flaps ...
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JP4954284B2 |
The methods and devices provided herein include methods and devices for controlling a permanent magnet motor. In one implementation, a method is provided that allows for the determination of the values of the phase back EMF voltage and o...
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JP2012110083A |
To assure control precision of a range switching mechanism, in a system which includes a play at an engagement connection part between an output shaft on motor side and a manual shaft of the range switching mechanism.A rotation angle amo...
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JP4940666B2 |
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JP2012100371A |
To provide a stepping motor driving device which can determine rotor stop with high accuracy.In a stepping motor driving device, A phase output part (11) sets both ends of A phase coil into high impedance when receiving a high impedance ...
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JP2012098054A |
To address the problems that pointers tend to be forced out of alignment by temperature changes, faster turning of the pointers invites an increase in power consumption, stepwise pointer movement in addition to continuous pointer movemen...
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JP4930613B2 |
An image forming apparatus includes: a stepping motor arranged in a conveying path for a paper; a driver for driving the stepping motor; a current detecting unit for detecting an actual current value; and a control unit for providing a s...
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JP2012090395A |
To provide a stepping motor rotation control method which realizes smooth rotation and accurate stop position control, and a shooting device for obtaining a shot image which does not cause a user to feel a sense of discomfort by includin...
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JP4926465B2 |
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JP2012083273A |
To quickly complete a quick-feed drive when quickly feeding a plurality of stepping motors in a configuration where a side for outputting a drive command of the stepping motors and a side for receiving the drive command and actually outp...
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JP4922008B2 |
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JP4920498B2 |
When the magnitude of a traverse signal exceeds a predetermined level, the value of a microstep drive signal is changed by one microstep angle so that the rotation angle of the stepping motor changes in a rotation direction in which the ...
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JP4916457B2 |
An optical apparatus having a recording mode that is switchable between motion picture recording and still picture recording includes an optical element, a motor that includes a rotor having a magnet, and a stator having a coil configure...
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JP2012068921A |
To provide an electric actuator which is hard to be affected by external noise when positional data is transmitted to control means.A mobile object which slides in a storage hole 13 by being integrated with a rod 24 holds a magnet 28. A ...
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JP2012065539A |
To provide an analog electronic clock capable of operating normally even in the case where a battery voltage becomes higher than a prescribed voltage.A stepping motor control circuit comprises: a secondary battery 113 as a power source; ...
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JP2012065505A |
To provide an electric motor capable of achieving difficult out-of-step.The electric motor includes: a rotor 20 which has a gear shape and is magnetized around a rotating shaft in the radial direction; a core 150 which is disposed to fac...
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JP2012063346A |
To detect a power supply voltage without providing a voltage detection circuit, and to stop driving in a state in which information on accurate driving pulses is held when the power supply voltage drops to a predetermined voltage or lowe...
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JP4901912B2 |
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