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JP7346120B2 |
An optical apparatus attachable to an image pickup apparatus and switchable a power state between a first state and a second state that consumes a power less than the first state includes a driver that drives a driven member, a first det...
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JP7346174B2 |
To provide a motor control device for suppressing speed fluctuations at the time of switching of motor control.A motor control unit 157 controls the operation of a motor 1 by open control and sensor-less vector control. The motor control...
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JP7344733B2 |
A step motor drive device includes a step motor including a rotor, stators, and a coil, a drive circuit that outputs a drive signal including a plurality of partial signals that are output intermittently, a detecting circuit that detects...
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JP7334766B2 |
To appropriately select a pulse that is suitable for current conditions from among a plurality of kinds of pulses to be applied to a stepping motor in an electronic clock.A drive device of an electronic clock 1 includes: a load; a drive ...
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JP2023116232A |
To obtain a control method of a ventilation blower which can suppress stress to be applied to a rotary shaft and a gear of a stepping motor in comparison with a conventional manner.There is provided a control method of a ventilation blow...
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JP7327951B2 |
The task of the present invention is to provide a driving circuit capable of outputting information useful to design or control of a system to outside. The present invention relates to a driving circuit and a driving method of a stepping...
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JP7318538B2 |
An electronic watch includes a driver controlled to be in an ON state in which a drive current is supplied to a coil of a watch motor, and an OFF state in which the drive current is not supplied, a current detector that detects a current...
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JP2023105648A |
To easily retrieve a reference position (origin) specific to an electric valve.An electric valve control device comprises: a rotation instruction unit for instructing an instruction angle to a stepping motor in such a manner that a step ...
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JP2023104037A |
To enable control of a stepping motor by a microstep while driving the stepping motor at high speed.A control circuit comprises a storage section 11 for storing a prescribed number of register values, a generation section 121 for generat...
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JP7314504B2 |
To reduce driving sound (noise) while securing necessary torque in a stepping motor that drives a wind direction plate.An indoor unit 2 includes: an operation management section 23 managing an operation of the indoor unit 2 and outputtin...
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JP7315096B2 |
Provided is an analysis device capable of reducing vibration and noise generated by a stepping motor due to countermeasure for step-out of the stepping motor. A drive unit is controlled such that a set value of driving torque of the step...
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JP2023101103A |
To provide a motor control circuit for watch capable of suppressing an increase in a drive time when driving a rotor from the state that the motor is stopped for prescribed steps, a movement, an electronic watch, and a control method of ...
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JP7302321B2 |
An electronic watch includes a driver controlled to be in an ON state in which a drive current is supplied to a coil of a motor and an OFF state in which the drive current is not supplied to the coil, a target current value setter config...
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JP7301622B2 |
In a motor control device, a rotational phase detection unit detects a rotational phase of a rotor of a stepping motor, and a driving waveform generation unit generates a driving waveform for driving the stepping motor. An advance angle ...
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JP7296620B2 |
To enable 4-quadrant operation required for servo operation without performing complicated control such as coordinate conversion and phase conversion by using a general dedicated IC in a drive device of a stepping motor by closed loop co...
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JP7295650B2 |
A timepiece includes a stepping motor having a rotor and a coil, and a drive circuit that applies a first drive pulse having a stable stationary position at a rotor rotation angle of 90 degrees or less from a reference position and a sec...
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JP2023084894A |
To improve the accuracy of disconnection detection in a stepping motor.A control circuit 10 includes: a driving control signal generation unit 12 which generates a PWM signal so that a measured value of a current flowing in a two-phase c...
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JP7294917B2 |
To provide a stepping motor control device capable of low-cost and highly accurate torque estimation and step-out state estimation without requiring a position sensor such as an encoder or a dedicated microprocessor in drive control of a...
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JP7293044B2 |
To control a mechanism for deformation so that a deformation trace of a sheet can be alleviated.A control device 110 is characterized by including a seat 111, a push-pull part 112 having a stationary part 112a that is movable between a f...
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JP2023082798A |
To enhance the stability of operations of a stepping motor at a start of driving.A motor drive control device 10 comprises: a control unit 11 that generates a control signal Sd for controlling drive of a 2-phase stepping motor 20; and a ...
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JP7291095B2 |
A stepping motor control device is provided, which controls a stepping motor including a rotor position detector by micro-step driving. The control device has a plurality of operation modes including an adjustment mode and a use mode. In...
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JP2023082475A |
To provide a motor driving device that can realize a high accuracy of current detection even when the limit value of the current flowing in a motor coil is set small.The motor driving device includes: a generation unit (Q5, Q6, AMP1) for...
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JP7291102B2 |
A motor control device is provided, which drives a two-phase synchronous motor. The motor control device includes: control current waveform generating means which generates a control current waveform by superposing a fundamental sinusoid...
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JP7290527B2 |
A stepping motor control device is configured to drive a stepping motor by applying a normal drive pulse or a fixed pulse having an energy larger than that of the normal drive pulse. The stepping motor control device includes a determina...
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JP7287285B2 |
The purpose of the present invention is to make it possible, during driving of a stepping motor, to reduce power consumption while stabilizing a stop position during stop control. Accordingly, this motor control device is provided with: ...
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JP2023076319A |
To provide a motor-driven valve control device and a motor-driven valve device capable of suppressing an increase in an internal temperature of a motor driver.Upon receipt of a valve opening degree changing command including a target val...
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JP2023075796A |
To suppress fluctuations in the phase of a drive current when switching between feedback control and open loop control.A motor control device includes: a current control unit that controls a current by either open-loop control or closed-...
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JP7271318B2 |
A stepping motor includes a slit rotating plate that rotates together with a rotor and two photo interrupters. A motor control device includes a rotation phase detection unit that acquires an output of the photo interrupter and detects a...
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JP7269824B2 |
A motor drive control device has a controller and a driver. The controller generates a control signal for controlling driving of a two-phase stepping motor so as to alternately repeat one-phase excitation in which a coil of one phase in ...
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JP7267561B2 |
To provide a technique for suppressing influence of disturbance and reducing an operation amount in a stepping motor controller.A stepping motor controller 1 for controlling a stepping motor to perform microstep driving comprises an inve...
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JP7261622B2 |
Excitation position is changed in accordance with an external clock. The state of a full bridge circuit including four transistors connected to a coil of a stepping motor, is controlled in accordance with the excitation position. At the ...
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JP7257902B2 |
A motor control apparatus operable to control a motor includes a phase determiner for determining a rotational phase of a rotor of the motor, and a controller having a first control mode for controlling a driving current flowing through ...
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JP7255245B2 |
An electronic timepiece enables driving by appropriate drive conditions even when the load on a motor changes. The electronic timepiece includes a motor having a coil; a driver that is controlled to an on state supplying drive current to...
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JP7256043B2 |
To provide a driving circuit capable of measuring a counter electromotive voltage constant KE.A counter electromotive power detection circuit 230 detects a counter electromotive power VBEMF1 caused in a coil of a stepping motor 102. A ro...
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JP7256044B2 |
To improve followability for a load change.A counter electromotive power detection circuit 230 detects a counter electromotive power VBEMF generated in a coil of a stepping motor 102. A rotational number detection circuit 232 generates a...
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JP7254400B1 |
A motor-operated valve control device, a motor-operated valve device, and a method for controlling a motor-operated valve are provided that can reduce noise by shortening the time required for an initialization operation of a motor-opera...
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JP2023046828A |
To provide a motor driving apparatus capable of suppressing ripple of current flowing through a motor coil as much as possible, while suppressing distortion of current flowing through the motor coil which occurs when the current cannot f...
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JP7237690B2 |
To provide a card conveyance device which can reliably adjust a rotation position, when driving a card inversion unit.A card issue device 1 is a card conveyance device which conveys a card. The card inversion unit 60 includes a card hold...
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JP7237783B2 |
According to one embodiment, there is provided a control device including a determination unit, a correction unit and a drive controller. The determination unit determines whether a phase of a rotor of a stepping motor is ahead of or beh...
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JP2023031146A |
To make it possible to rotationally drive a stepping motor more smoothly than in the past.A control unit sets a step switching timing when driving a PM-type stepping motor in microsteps on the basis of a reference clock. The control unit...
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JP2023031147A |
To make it possible to rotationally drive a stepping motor more smoothly than in the past.A control unit controls for each step an A-phase current and a B-phase current that are made to flow from a motor driver to the PM-type stepping mo...
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JP7232684B2 |
To improve the accuracy of correcting the rotation position of a rotor when subjected to an external force that rotates the rotor.A stepping motor controller 100 controls a stepping motor 151 that comprises a rotor for causing a pointer ...
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JP7225766B2 |
Provided is an electronic timepiece capable of suppressing variation in the drive speed of a rotor, and driving a motor at a constant speed. The electronic timepiece has a driver; a controller that controls the driver to the on state or ...
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JP7224204B2 |
The present invention relates to a driving circuit and a driving method for a stepping motor, and an electronic machine using the same. A current value setting circuit generates a current setting value. A constant current chopper circuit...
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JP7223609B2 |
In the present invention, when an on-off valve is switched from an open state to a closed state a drive pulse is continuously supplied to a stepping motor. In response to the drive pulse the stepping motor rotates, thereby moving a valve...
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JP7219094B2 |
There is provided an analog electronic timepiece including a stepping motor in which a rotor magnetized in two poles is rotationally driven in a stator connected to a driving coil, a drive circuit for applying a drive pulse to the drivin...
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JP7214220B2 |
To provide a driving device for a stepping motor capable of preventing the stepping motor from being vibrated in a saturation state of a drive voltage.A driving device comprises: an output step section (11) and an element drive section (...
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JP7210672B2 |
To provide a motor control unit that makes motor control applicable to a vector control system.A motor control unit comprises an A/D converter that detects a current value on the ground side of a driving circuit that drives a plurality o...
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JP7210339B2 |
According to one embodiment, there is provided a motor control device including a detection circuit, a control circuit and a drive circuit. The detection circuit detects, in a direct current motor with a first coil and second coil, a fir...
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JP7206975B2 |
An electronic timepiece enables driving a motor in a reverse direction. The timepiece has a current detector detecting a current value flowing through a coil; a driver controller that outputs, according to the detected current value, a f...
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