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Patent Searching and Data


Matches 701 - 750 out of 11,348

Document Document Title
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...  
JP2016116282A
To provide a document conveying device that requires no need to install a special cooling structure and is excellent in silence, an image reading device, and an image forming apparatus.A motor driver 302 generates a pulse signal accordin...  
JP5936883B2  
JP2016111828A
To provide a pulse generating circuit capable of both gradually increasing and decreasing a pulse frequency with a simple circuit configuration.The pulse generating circuit includes: vibration means for, when a potential of a first termi...  
JP2016111223A
To provide a semiconductor device which can be connected to a mutual inductance load and inhibit an operation of a parasitic transistor formed in the semiconductor device, and always and successfully keep a voltage of an ST terminal to a...  
JP5933272B2  
JP2016101078A
To increase saliency.A permanent magnet type motor includes: a rotor that includes a rotor magnet having a plurality of N-poles and S-poles magnetized alternately on the outer periphery and a rotation shaft; and first and second ring-sha...  
JP2016087731A
To provide a robot arm mechanism and a stepping motor controller capable of preventing unnecessary deactivation of a stepping motor.The robot arm mechanism includes: a robot arm having a joint portion J1; a stepping motor 31a for generat...  
JP2016092759A
To enhance accuracy by reducing the stop position error of a movable section and the drawing position error of a mask, in an imaging device capable of changing the shooting direction by a plurality of movable sections.A network camera 10...  
JP2016086538A
To detect the rotational position of the rotor of a motor by a simple configuration.A position detector 22 for detecting the rotational position X of the rotor 12 of a motor 10 including an electrical angle of M period (M is a natural nu...  
JP2016082672A
To provide a power swing detector for a polyphase pulse motor, capable of detecting power swing of a motor without necessity of modeling of an existing driving device.A power swing detector 31 is connected with the outside of a driver bo...  
JP2016082859A
To provide a step-out detector and a step-out detection method of a pulse motor capable of detecting step-out of a pulse motor with high accuracy.If it was a light-shielding state where the amount of light received by a photosensor 80 is...  
JP2016082673A
To provide a power swing detector for a polyphase pulse motor, capable of detecting power swing of a motor without necessity of modeling of an existing driving device.The power swing detector 31 is connected with the outside of a driver ...  
JP2016073168A
PURPOSE: To avoid degradation in an S/N ratio at a normal operation even after a motor current increases during an excitation detection operation.CONSTITUTION: The stepping motor driver circuit (20), including current detection circuits ...  
JP2016073174A
To enable high-precision detection of abnormality such as loss of synchronism, driving failure, etc. of a stepping motor.A stepping motor driving device supplies a driving signal to a stepping motor 101. The stepping motor has rotation d...  
JP2016070661A
To provide an electronic clock that has a relatively small circuit, has a relatively high robustness against drive dispersion such as variations in a battery voltage and a gear load torque, allows easy setup of rotation detection of a ro...  
JP2016073143A
To provide a motor control device which avoids operation stop due to torque shortage when a motor starts rotating and achieves low current consumption.A motor control device comprises: a supply current control section which controls curr...  
JP2016067193A
To provide a controller of a motor capable of highly accurately identifying a position of a rotor on the basis of counter-electromotive voltages generated in coils of the motor without providing a sensor detecting the position of the rot...  
JP2016063606A
To stop motor drive without generating a loss of synchronism and at an excitation position when stopping the drive during acceleration and to stop the drive with a minimum number of pulses from a forced stop position.A motor drive contro...  
JP2016063735A
To provide a control unit capable of easily calculating detection electric angle signal to reduce limitations relevant to the resolution of an encoder.A control unit 1 includes: a position generation section 30 that generates a position ...  
JP5904803B2  
JP2016052174A
To provide an image forming apparatus capable of suppressing increase of a conveyance time by operating at an irreducible minimum measures to cope with a loss of synchronism in a document feeding motor under a low-temperature environment...  
JP2016052141A
To provide a motor drive device which is easily handled and capable of controlling a coil current in simple configuration, and a power module.The motor drive device controls the coil current that flows to a coil forming a motor, by switc...  
JP5900432B2  
JP2016044982A
To provide an electronic equipment such as an analog electronic timepiece, for which either of the normal rotation and the reverse rotation which is smaller in resource consumption made by motor rotation can be determined to be the rotat...  

Matches 701 - 750 out of 11,348