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JP2012050171A |
To provide a stepping motor driving device that can effectively reduce a nonuniform rotation angle with simple configuration.The stepping motor driving device comprises: a stepping motor 1 that drives a driven element; a motor driver 2 t...
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JP2012048020A |
To provide a rotation control apparatus, an image forming apparatus, and a program for stopping a rotation-type development apparatus at a predetermined position during accelerated rotation.To rotate a rotation-type development apparatus...
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JP2012050257A |
To provide a stepper motor driving device capable of lowering power consumption by supplying the minimum energy for rotating a rotor.A DC voltage from a power source circuit part 2 is supplied to a bridge circuit formed of switches 7a-7d...
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JP4890138B2 |
A drive circuit drives a motor in a mode selected from first and second modes. A drive unit operates in response to a control signal received from a signal generation unit to control how the motor should rotate. The control signal is app...
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JP4885754B2 |
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JP4886399B2 |
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JP4888506B2 |
According to a method for initializing an indicating instrument for a vehicle, zero-reset processing is performed. In the zero-reset processing, a control device is made to control a drive signal to rotate a pointer in a zero-reset direc...
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JP4884125B2 |
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JP2012039851A |
To avoid intermediate rest by correctly determining the rotation state of a stepping motor even when the voltage of a secondary battery used as a power source has dropped.A detection section used for detecting the rotation state of a ste...
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JP4880333B2 |
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JP2012026874A |
To solve the problems in which: in a conventional step motor for realizing continuous pointer operation, a variation width in angular velocity of a rotor is extremely great and, if a long second pointer or the like is provided, a user of...
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JP4871131B2 |
A stop-detection method intended for a multi-phase synchronous geared motor that is controlled in a stepping mode, which measures the sum of the currents circulating in each of the N phases of the geared motor. In the method the stop det...
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JP4873720B2 |
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JP4868057B2 |
To provide a meter system reducing the generation of an inaccurate indication of a vehicle condition value and the sense of incongruity felt by a user while integrating a system. When a control unit 60 controls a flasher semiconductor sw...
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JP4867020B2 |
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JP4863871B2 |
The present invention can rotationally drive a motor with main drive pulses corresponding to loads with the simple constitution without using a counter circuit. A control circuit, in driving a motor with a second main drive pulse, when a...
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JP4862126B2 |
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JP2012016221A |
To improve detection accuracy of a step-out state of a stepping motor.A motor control device 10 has a control part for applying pulse voltage with modulated pulse width to each coil of a stepping motor 20 which has the coils of at least ...
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JP2012016122A |
To provide a control method and control apparatus for stepping motor, capable of suppressing noise generated while a rotor is moving to an initial position.A control apparatus 10 comprises: a control circuit 30; and a drive circuit 40. T...
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JP4857704B2 |
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JP4855957B2 |
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JP2012010460A |
To provide a motor controller capable of accurately detecting step-out of a stepping motor without using an encoder.A motor controller 60 includes: a driver 63 for outputting a current for driving a stepping motor 70 and outputting timin...
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JP2012002533A |
To prevent energy loss due to lack of debate on proper application time, shape, or output and discontinuance timing of a lock pulse, as a 16 ms full pulse is uniformly applied in prior art on basis of an idea that a lock pulse having an ...
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JP2011259596A |
To predict the step-out of a stepping motor with one threshold.A motor control apparatus has: a stepping motor; a current setting part that sets a current to be supplied to the stepping motor; a voltage phase estimation part that estimat...
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JP2011259617A |
To provide a drive unit capable of reducing backlash driving time while keeping stop accuracy.A drive unit includes a motor, a control object to be driven by the motor, a transmitting mechanism which has a backlash and transmits the driv...
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JP4843942B2 |
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JP4836934B2 |
A system and method is disclosed for controlling the input electrical current to an infusion pump stepper motor based on predetermined torque requirements. The system can include a motor controller and a non-volatile memory containing ex...
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JP2011250591A |
To achieve both shortening a hold time of a stepping motor and stable driving of the stepping motor.A device for controlling a stepping motor having a driving control section to control driving of a stepping motor, comprises motor curren...
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JP4831032B2 |
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JP4830334B2 |
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JP4831033B2 |
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JP4825588B2 |
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JP4823077B2 |
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JP2011239483A |
To provide a motor controlling apparatus that suppresses factors of heat generation or noise at the time of driving.A motor controlling apparatus has: a sensor detection circuit 201 that generates a periodic signal depending on rotation ...
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JP2011239555A |
To prevent replacement display from being generated even when a loaded battery voltage value V drops to a first threshold level YV1 during forcible out-of-step control; and, if the loaded battery voltage value V drops to a second thresho...
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JP2011234604A |
To suppress degradation of a secondary battery which is caused by overcharging, with no voltage detection special circuit such as a comparator circuit.There are at least provided a secondary battery 111 which acts as a power source for s...
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JP4813981B2 |
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JP4813824B2 |
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JP4809031B2 |
An input shaft speed signal for rotating a motor at a predetermined rotational speed is output from a rotation control unit to the motor. A rotational speed reduced by a speed reduction device with elastic bodies is detected by an output...
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JP2011214854A |
To provide an analog meter device rationally constituted as a device for displaying a plurality of environmental data.The analog meter device includes a sensor for detecting environmental data, such as temperature or a humidity; a dial p...
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JP2011217585A |
To provide a control device for an electronic apparatus, a method of limiting a torque output of a drive source, and an electronic apparatus which can perform limitation control of a torque output from a drive source at a suitable timing...
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JP2011214900A |
To provide an analog meter device rationally constituted as a device for displaying a plurality of environmental data.The device includes a first sensor 210 and a second sensor 220 for detecting different environmental data respectively,...
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JP4802545B2 |
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JP4800787B2 |
A step motor drive circuit has a first transistor pair having first and transistors, a second transistor pair having third and fourth transistors, and fifth and sixth transistors connected in parallel with the first and third transistors...
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JP4803335B2 |
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JP4799761B2 |
A method for controlling a stepping motor that moves an object from an initial position by a target distance. The method includes calculating a moved distance of the object, calculating a remaining moving distance of the object, updating...
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JP4797096B2 |
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JP4796780B2 |
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JP4796779B2 |
A stepping motor includes: a stator including a coil that is wound so as to form a hollow space; a rotor including a magnet to be disposed in the hollow space of the coil, the rotor being rotationally driven by changing magnetic poles of...
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JP2011203136A |
To accurately detect rotating status, including intermediate stopping.A rotation detection circuit 105, when it detects whether an induction signal VRs produced by rotation of a stepping motor 105, in a detection section having a plurali...
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