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Matches 601 - 650 out of 11,277

Document Document Title
JP2016213944A
To stably control drive of a stepping motor even if load change or resonance occurs.A motor control device 101 has control means 112, 113 that acquire actual drive speed of a stepping motor 102 and exerts open loop control and spark adva...  
JP2015091183A5  
JP6043096B2  
JP2015082969A5  
JP2016208727A
To provide a motor drive device and driving method therefor, capable of completely suppressing an adverse effect of a counter-electromotive force.A motor drive device 100 includes an auto-attenuation part 141 for controlling a path of an...  
JP2016201890A
To prevent a sense of incompatibility from being given to a driver or the like in a sweep operation of a gauge.A drive controller for a vehicular gauge 10 is capable of executing a sweep operation in which a pointer 13 that is provided o...  
JP6035291B2  
JP2016194495A
To provide a method for charging an analog electronic timepiece provided with a solar cell that charges a secondary power source, the method making it possible to charge the secondary power source rapidly.An analog electronic timepiece 1...  
JP6023376B1
[Subject] The power of driving power is saved using a sensing mechanism by simple composition. [Means for Solution] Stepping motor drive 1 is provided with the following. Distribution pulse generating means 2 which generates a distributi...  
JP6019006B2  
JP6018036B2  
JP2016187304A
To achieve low power consumption.A stepping motor 105 divides a detection section for detecting a rotating state of a rotor into a first segment, a second segment and a third segment while the rotor is being rotated by a main driving pul...  
JP2016187299A
To control a motor so as to avoid step-out during drive control of the motor when difference between a measured advance angle and a target advance angle is large.A motor control device performs advance angle control of a motor in respons...  
JP6015412B2  
JP2016185051A
To compare a magnitude of an excitation current by using a common comparator independently of whether a sense voltage is positive or negative.A drive device 100 comprises: a comparison part 20 that detects an excitation current flowing i...  
JP2016185053A
To compare a magnitude of an excitation current with a reference value continuously in relation to time and to make the excitation current follow a target accurately.A drive device 100 comprises: a comparator included in a comparison par...  
JP2016184993A
To shorten the acceleration time by improving the operation at the time of drive start, in motor control using a position detection signal.A controller of a motor 101 having a motor structure for rotating the rotor by voltage excitation ...  
JP2016185052A
To make an excitation current follow a target accurately.A drive device 100 comprises: a comparison part 20 that detects an excitation current flowing in a coil 6 by using a sense resistor 7, and compares a detected sense voltage IS with...  
JP6008035B2  
JP6004830B2  
JP2016178742A
To suppress a peak of current consumption of a stepping motor that is used for a clock or the like.A stepping motor driving device is configured to drive the stepping motor including first and second coils. The stepping motor driving dev...  
JP6000652B2  
JP2016174479A
To suppress strange sound and torque ripples generated when a drive frequency of a stepping motor is periodically modulated.A motor drive control device 100 comprises: a bridge control circuit 110 that controls AC current flowing in a st...  
JP2016170019A
To provide a 2-coil type step motor with which it is possible to detect the step rotation drive of a rotor with high accuracy in a 2-coil type step motor and save a drive current consumption.When detecting the rotation of a rotor 101 in ...  
JP2016170004A
To provide a motor control circuit and an electronic timepiece with which it is possible to reduce dependency on software processing and drive a motor more accurately.A motor control circuit 7 drives a plurality of stepping motors separa...  
JP5995789B2  
JP5987124B2  
JP2016159457A
To shorten the average printing time by performing loss of synchronization resolving processing at the start of the next driving only in a case where loss of synchronization might occur with displacement of the positions between a rotor ...  
JP2015023703A5  
JP2015022136A5  
JP2015023682A5  
JP5979884B2  
JP2016152695A
To obtain a motor drive circuit capable of suppressing decrease in drive efficiency of a motor sufficiently.A motor drive circuit is constituted of a first exciting circuit 101, a second exciting circuit 102, and a control circuit 103. T...  
JP2016524896A
A drive mechanism (16A, 16B) is constituted so that an actuator (30) thermally separated between two positions may be driven. A rotation actuating motor (18) constituted so that a drive mechanism may drive a motor member (20) rotatably, ...  
JP2016146682A
PURPOSE: To achieve both high-accuracy positioning control and speed control at high speed.CONSTITUTION: The motor control device is provided with a high-resolution encoder (11) for position control and a low-resolution encoder (21) for ...  
JP2016145801A
To provide an electronic timepiece capable of operating hands with rich expression while facilitating the setting of operation control, an electronic timepiece system, and a method of controlling an electronic timepiece.Hands 34, 36, and...  
JP2015023702A5  
JP2016140205A
To suitably control a motor current to a target value while constituting a device at low cost.A motor controller 100 comprises an H bridge circuit 20, and control means of driving a switching element of the H bridge circuit 20 with a PWM...  
JP5963452B2  
JP2015002609A5  
JP2016135077A
To improve followability of a motor curent with respect to a target value while configuring a motor current control apparatus at low cost.A motor current control apparatus comprises: an H bridge circuit that is connected to a motor coil;...  
JP2016131471A
To provide a driving device for a stepping motor capable of increasing torque in a high-speed region.The driving device for a stepping motor includes: a magnetization pattern storage sections (34, 64); and magnetization pattern selection...  
JP2016129448A
To provide a motor driving circuit capable of reducing the vibration generated at a prescribed speed in stepping motor driving.A motor driving circuit 110 comprises a speed determination unit 122, an excitation system selection unit 124,...  
JP2016127653A
To improve followability of a motor current to a target value in a motor current control device while configuring the device inexpensive.A motor current control device comprises: an H bridge circuit which includes a switching element and...  
JP2016127630A
To reduce vibration and loss by providing more current attenuation modes than a conventional image forming apparatus and by setting a suitable current attenuation mode according to a change in rotational speed, such as acceleration or de...  
JP2016127684A
To provide a motor driving device capable of performing a chopping operation at a proper chopping frequency which can reduce a lag of a switching timing by a control clock.A motor driving device comprises: a chopping frequency setting un...  
JP2014220868A5  
JP5946359B2  
JP2016119767A
To stably control a stepping motor while accelerating a rotational speed through advance angle control and drive waveform switching.A stepping motor control device comprises: rotation detection means which outputs a detection signal in r...  
JP2016119814A
To appropriately switch a drive system in accordance with a rotation start position and a rotation end position of a stepping motor.A stepping motor controller comprises: drive signal generation means for generating a drive signal of a f...  

Matches 601 - 650 out of 11,277