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Patent Searching and Data


Matches 401 - 450 out of 11,353

Document Document Title
JP6498031B2  
JP2019054607A
To provide a motor drive control device capable of easily generating an excitation current pattern of a pseudo sine wave and a control method of the same.The motor drive control device includes: a measuring circuit that measures a duty o...  
JP6494271B2  
JP6488603B2  
JP2019047559A
To implement accurate rotation detection in an electronic clock and a rotation control device.The present invention relates to a rotation control device configured to implement rotation control of a rotor in a motor 4 comprising the roto...  
JP2019047536A
To provide a motor driving device and a rotation detection method of the motor driving device that can appropriately determine whether or not a motor rotates normally on the basis of an induction voltage induced by an induction current r...  
JP2019047722A
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 ...  
JP6486511B2  
JP2019041451A
To provide a motor driving device, an image forming apparatus, and a motor driving method, in which step-out of a stepping motor can be prevented and the stepping motor can be rotated at high speed.The motor driving device includes a ste...  
JP2019041536A
To solve such a problem that control of a stepping motor may not be performed appropriately depending on a movement state of an apparatus having the stepping motor or an environment of the apparatus.A control apparatus controls a steppin...  
JP6481715B2  
JP2019037087A
To detect a rotor position.According to one embodiment, a current detection unit of a rotor position detection system, when first and second high-side transistors of an H bridge circuit are in an off state, and first and second low-side ...  
JP2019037035A
To reduce a collision sound caused by a moving member such as a mirror while maintaining the drive speed of the moving member.A motor 1 includes magnetic sensors 8 to 11 for detecting the rotation position of a rotor 3. A control circuit...  
JP2019035819A
To provide an imaging apparatus capable of making a frame speed faster by shortening the drive time of a mirror, when the mirror is driven by a lead screw.The imaging apparatus includes a mirror 202 which is rotated between an up positio...  
JP2019030033A
To reduce a risk of power swing and to shorten a period of pre-hold.A motor controller of an embodiment comprises a motor driver and motor control means. The motor driver supplies a driving current to a stepping motor. The motor control ...  
JP2019030038A
To cope with an unstable motor drive during switching of a motor drive system.A motor control method and a drive system are not switched, even though a rotation speed ω_ref' at a time tc1 changes from a smaller value than a threshold va...  
JP2019023630A
To provide an electronic timepiece with a relatively small-sized circuit, having a relatively high robustness against drive variation such as variation in cell voltage and gear load torque, allowing rotor rotation detection to be easily ...  
JP2019022421A
To provide a stepping motor drive device and a printer device that are able to efficiently adjust a phase of a stepping motor.A stepping motor drive device comprises: a stepping motor; drive means that, in synchronous with a mechanical a...  
JP2019022280A
To provide a control apparatus for a motor capable of suppressing an initialization operation according to a position at a time of instantaneous interruption of power supply.The motor control apparatus that controls driving of a motor ha...  
JP6465848B2  
JP6463595B2  
JP2019015867A
To provide a control device capable of improving linearity in a brightness change by driving a diaphragm when adjusting the exposure by driving the diaphragm when picking up moving images.A control device for controlling drive of a diaph...  
JP6456212B2  
JP6455247B2  
JP6456211B2  
JP6456210B2  
JP2018207733A
To solve such a problem that control of a motor becomes unstable, when control of the motor is started based on the initial phase, in a state where the determined initial phase and the actual rotary phase of a rotor are different.At firs...  
JP2018207607A
To suppress high frequency noise in micro step driving of a stepping motor.A motor control device 100 includes a H bridge circuit 20 and control means for driving a switching element of the H bridge circuit 20 with a PWM signal to set a ...  
JP2018204883A
To solve a problem of using a DC pulse motor as a rotation source of an air-cooling fan for forcedly-cooling a condenser of a freezer, in that when replacing an existing DC pulse motor with a new DC pulse motor, when the number of contro...  
JP2018207769A
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...  
JP6438906B2  
JP2018198517A
To provide a rotation operation control device which can perform a rotation control of a stepping motor with more efficiency and good accuracy, an image formation device, and a rotation operation control method.A drive control portion 14...  
JP2018196247A
To reliably prevent a motor from stepping out in a case where assist control of a plurality of motors having different motor types or drive loads is performed.An image formation device comprises a drive mechanism 200 rotating and driving...  
JP2018196206A
To provide a stepping motor driving device and a stepping motor driving method capable of realizing high speed driving while suppressing heat generation and vibration of a stepping motor.A stepping motor driving device 10 includes: a pul...  
JPWO2017141994A1
The magnetized rotor (21), and the 1st and the 2nd stator pole section which are countered and provided via a rotor (21), The 3rd stator pole section that the 1st and 2nd stator pole sections do, faces a rotor, and is provided, The stato...  
JP2018196275A
To provide a control method for shortening convergence time until a rotor of a stepping motor stops.A control method may include: rotating a rotor using an excitation method of simultaneously exciting, among plural stator poles, two stat...  
JP6434332B2  
JP2018191460A
To provide a control device which can perform a smooth acceleration/deceleration while securing a dynamic range of a rotation speed of a stepping motor.A control device (100) has generation means (106) for generating a detection signal o...  
JP2018191461A
To provide a control device capable of reducing a difference in motor rotation speed when switching between open-loop control and feedback control.The control device for controlling a stepping motor includes control means (210) which con...  
JP6429598B2  
JP6430695B2  
JP2018184061A
To provide a vehicular display device that allows a movable body to move to a desired position while suppressing vibrations.The vehicular display device comprises: a storage part; a movable body, arranged inside the storage part, which c...  
JP6425305B2  
JP2018182895A
To suppress the circuit size and a processing time while executing the speed control of a stepping motor by calculation based on physical theory.A step time calculation unit 202 calculates a time for a distance of an n-th step (n is a po...  
JP2018182879A
To provide a control device of a stepping motor capable of suppressing the magnitude of sound generated as a motor is driven.A control device of a stepping motor gradually increases the absolute value of an excitation current of an A pha...  
JP2018182808A
To reduce the uneven rotation of a stepping motor.A stepping motor according to an embodiment includes a rotor having a magnet, a first stator having a coil and forming an excitation vector in a first phase, a second stator having a coil...  
JP2018182793A
To reduce the uneven rotation of a stepping motor.A stepping motor according to an embodiment includes a rotor having permanent magnets multipolar magnetized in a circumferential direction, a first stator having a coil in a first phase a...  
JP2018183033A
To provide an actuator which suppresses incorrect position detection of an output shaft.An actuator includes: a pulse generator unit which generates a pulse signal according to a rotation angle of an output shaft which rotates by torque ...  
JP6423745B2  
JP6422258B2  

Matches 401 - 450 out of 11,353