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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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JP7208071B2 |
A back electromagnetic force detection circuit detects a counter EMF generated in a coil of a stepping motor. A revolution count detection circuit generates a revolution count detection signal. A determining circuit generates a determina...
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JP7205338B2 |
An electronic timepiece can prevent overrunning when driving a motor at a high speed. The electronic timepiece has a controller that controls a driver to an on state or an off state according to the current value detected by the current ...
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JP7205337B2 |
An electronic timepiece detects an external magnetic field without using a magnetic sensor. The electronic timepiece has a driver that drives a motor; a current detector that detects a current value flowing through a coil of the motor; a...
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JP7203656B2 |
To achieve both improvement of display resolution of a hand and stabilization of a hand-operation.An electronic clock includes: a rotor which is magnetized to at least two poles, N pole and S pole, and rotates a hand; a stator giving mag...
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JP2023003200A |
To provide a motor drive control device and a motor drive control method capable of detecting step-out of a stepping motor with high accuracy.A motor drive control device comprises: a motor control circuit that generates a drive control ...
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JP2023000262A |
To control a stepping motor so as to reduce a rotation error of a rotor of an electric valve.An electric valve control device comprises: an excitation pattern correction value storage part connected to an electric valve having a stepping...
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JP2022191623A |
To provide an image reading device prevented in stepping-out of a motor for driving a transportation roller 106 or occurrence of jam, when driving of a motor for driving a pick-up roller 103 and a separation roller 104 is started without...
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JP7193396B2 |
A motor driving apparatus including a driving circuit for supplying a first pulse with which a first coil included in a two-phase stepping motor generates a first magnetic flux, a second pulse with which a second coil included in the ste...
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JP2022185079A |
To provide a driving device of a stepping motor capable of inhibiting an output torque of a stepping motor from fluctuating compared to a case in which an exciting current of the stepping motor is set to a constant value.A driving device...
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JP7188257B2 |
To provide a technology to specify the location of failure in an apparatus.An image forming apparatus comprises: an image reading unit 213; a cleaning unit 206 that cleans the image reading unit 213; a motor 201 that rotates the cleaning...
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JP2022182102A |
To enhance stability of a driving control of a two-phase stepping motor against a load fluctuation.A motor driving control device 10 comprises a control part 11 and a driving part 12, in which the control part monitors a rotational state...
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JP2022182101A |
To realize stable energization switching by a one-two phases excitation system of a two-phase stepping motor.A motor driving control device 10 includes: a control part 11 that generates a control signal Sd so as to alternately repeat one...
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JP7171321B2 |
To hinder reverse rotation movement of a motor in a case where vibration occurs due disturbance and so on, by allowing generation of a drive waveform less in terms of reaction delay, in a motor drive device that forms an efficient drive ...
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JP7160373B2 |
To provide a drive device of a stepping motor that can suppress fluctuations in a calorific value of the stepping motor even when the rotation speed of the stepping motor changes even at the time of stopping.A drive device of a stepping ...
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JP7158891B2 |
To provide a motor drive device and a motor drive method capable of creating an efficient drive waveform with less reaction delay for a motor, by acquiring rotational position information detected by rotational position detection means o...
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JP7158910B2 |
A control device for a stepping motor capable of hold control that can smoothly reduce an excitation current at a rotation stopping time of the stepping motor is provided. A control device (10) for a stepping motor (20) causes an excitat...
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JP2022160781A |
To provide a motor control device capable of reducing the vibration of a to-be-driven member when a stepping motor driving is stopped.A motor control device (20) has calculation means (209) for calculating a difference between a rotor ph...
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JP2022157384A |
To provide a rotating device for avoiding erroneous determination when determining whether or not a rotational position of an output gear is within a dead zone region of a position sensor based on output information from the position sen...
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JP2022152926A |
To provide an air conditioner capable of saving power consumption while securing torque of a stepping motor that drives the ventilation amount and vertical wind direction plate of a blower fan.An air conditioner 1 comprises: a vertical w...
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JP2022147669A |
To provide a motor controller, a motor control method, and a motor control program, capable of more accurately controlling a stationary position of a motor.A motor controller comprises: a drive signal generation unit; a target voltage va...
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JP2022145457A |
To provide a technique capable of reducing noises while preventing the occurrence of motor step-out in a situation where the ambient temperature changes.A control device 500 controls the operation of a stepper motor. An output unit 530 i...
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JP2022143391A |
To provide a motor control device capable of stably controlling torque from a low-speed rotation range to a high-speed rotation range, a motor control method, and a motor drive system.A motor control device includes a first signal genera...
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JP7144190B2 |
To provide a driving circuit mounted with an additional function without increasing the number of pins.A direction setting pin DIR receives a direction command signal ROT commanding a rotational direction of a stepping motor 202. A clock...
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JP2022541426A |
The present invention relates to a method of operating a stepper motor for use in a dental tool machine (1) for removing material from a dental blank (2), the method netting the torque reserve of the stepper motor at the operating point....
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JP7129802B2 |
To suppress deterioration of measurement accuracy of reverse voltage even when there is an offset error in an AD converter.A motor controller is provided with: a motor drive part which applies pulse voltage to each of a plurality of phas...
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JP7126315B2 |
To reliably rotate a step motor while reducing power consumption, a step motor driving device includes a step motor (20) that includes a rotor (22), stator, coil (21), driver circuit (7) that outputs a measurement drive signal to the coi...
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JP7119703B2 |
Provided is a motor drive circuit capable of driving a stepper motor even if the load on the stepper motor varies. A motor drive circuit has a first drive circuit that outputs a first drive signal to the driver; a second drive circuit th...
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JP2022099498A |
To provide a motor control circuit for a watch that can execute fast-forward drive of a motor even during the detection of an external magnetic field, a movement, an electronic watch, and a method for controlling an electronic watch.A mo...
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JP7096041B2 |
To provide a motor drive device which prevents a difference in an unexpected actual rotation amount of a step motor by determining a rotation of a rotor.A motor drive device includes: a rotor; a step motor 20 having a first coil and a se...
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JP7094910B2 |
According to one embodiment, a controller of a stepping motor includes a table generating unit and a current controlling unit. The table generating unit generates a data table of a threshold by using values of induced voltage at frequenc...
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JP2022091107A |
To detect a position of a pointer.A stepping motor control device includes: a drive unit for driving a stepping motor having a rotor for rotating a pointer and a coil for generating magnetic flux for rotating the rotor; a control unit fo...
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JP7086173B2 |
A device and method for controlling operation of an ambulatory infusion device drive. The drive may have a spindle drive with a stepper motor, a drive member operatively coupled to a rotary encoder, and a driver controller that executes ...
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JP2022086625A |
To solve the problem in which: due to stoppage of a motor after a control method for the motor is switched from vector control to constant current control, the distance between a rotation shaft of a first rotating body and a rotation sha...
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JP7081268B2 |
A movement includes a driver having ON and OFF states, and outputting a drive signal to a coil of a motor, a lower limit detector detecting that a current flowing through the coil is less than a lower limit, a drive controller bringing t...
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JP7080700B2 |
A motor control apparatus includes a detector configured to detect a drive current, a phase determiner configured to determine a rotation phase of a rotor of a motor, and a controller provided with a first control mode for controlling th...
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JP2022082019A |
To improve the energy-saving properties of a motor with a motor control unit having a simple configuration.A motor control unit controls the drive of a motor, and has a motor sound detection unit 1 that detects a sound emitted by the mot...
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JP7073849B2 |
A motor control circuit includes a driver having ON and OFF states, and outputs a drive signal to a coil of a motor, a lower limit detector detecting whether current flowing through the coil is less than a lower limit, an upper limit det...
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JP7066361B2 |
A timepiece includes a voltage detection unit that detects a voltage applied to a stepping motor for driving an indicating hand, and that outputs a voltage detection result, and a drive control unit that controls a rotor to perform rever...
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JP2022070087A |
To provide a motor control device capable of controlling a motor with higher accuracy, a motor control system, and a motor control method.A motor control device has: an angle information acquisition part 41 acquiring angle information in...
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JP7064118B2 |
A stepper motor control system includes stepper motor error reduction. For example, first and second power switches respectively energize and de-energize a stepper motor coil during each cycle for pulse-width modulating (PWM) the coil cu...
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JP7063314B2 |
An electronic watch includes a pointer; a stepping motor including a coil and configured to drive the pointer; a driving circuit configured to drive the stepping motor; an A/D converter configured to detect electromotive force generated ...
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JP2022067172A |
To address the problem in which a computation necessary to generate a PWM signal has to be executed within a half time of one cycle of the PWM signal, requiring the use of a computation processing device having relatively high computatio...
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JP2022060852A |
To prevent a stepping motor from stepping out.A motor control device 157 comprises a control means including a vector control unit 515 that performs vector control so that a deviation between the rotational position of a rotor of a stepp...
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JP2022060752A |
To prevent generation of a resonance rotating state of a stepping motor.An image forming apparatus includes: a secondary transfer roller 12 that transfers a toner image on an intermediate transfer belt 4 onto a sheet material S; a sheet ...
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JP7052193B2 |
A stepping motor includes: a rotor; and a stator including an opening accommodating the rotor, a first side yoke extending from the opening in a first direction, a second side yoke extending from the opening in a second direction that is...
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JP2022055975A |
To provide an electric drive type valve for controlling the mixing ratio and/or the flow rate of hot water and cold water by using a stepping motor, capable of suppressing heat generation in the stepping motor while maintaining a stop st...
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JP7042612B2 |
To provide a calibration method for a stepping motor that is capable of reducing loss of synchronism.A calibration method for a stepping motor which switches a butterfly valve 12 by rotating in synchronization with an input pulse is prov...
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JP7038567B2 |
To reliably increase a rank of a main drive pulse for stable rotation.A motor controller comprises: a rotation detection unit for detecting a rotation state of a rotor of a stepping motor in a first period which follows output of a drivi...
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