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JP5156225B2 |
To provide a motor drive circuit wherein the occurrence of short circuit can be prevented even when multiple operations are simultaneously performed with a combination switch. The motor drive circuit includes a switch unit 50 constructed...
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JP5155322B2 |
Various systems and methods for controlling DC motors are disclosed herein. For example, one method provides for controlling a polyphase, brushless DC motor. The method includes providing a DC motor that has a plurality of phases. Such a...
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JP2013042605A |
To provide a motor drive device that can implement soft start control of a motor in a simple and inexpensive circuit configuration even when the motor is released from lock protection and restarted.A motor drive device 1 includes: a cont...
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JP5154752B2 |
The method involves detecting and counting commutations produced between brushes and commutator segments for determining a position and/or speed of a shaft of motor (MOT) when the counting of the commutation is valid. Counter electromoti...
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JP5152847B2 |
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JP5153252B2 |
A controller samples a motor current value detected by a motor current detector at a sampling start timing for turning on a switching device to start holding in a motor current hold section, and fetches the motor current value held in th...
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JP5155055B2 |
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JP2013038962A |
To provide a motor control device capable of improving calculation accuracy of a motor resistance value for operation, and an electric power steering device.An ECU11 which controls a motor 12 comprises: a current value detection unit 31 ...
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JP5145462B2 |
Described herein is a drive arrangement for the motor-driven adjustment of an adjustable element in a motor vehicle, the drive arrangement having two electrical drives and a control device, the drives, in the fitted state, acting in the ...
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JP5141279B2 |
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JP5138962B2 |
To prevent a motor failure by overload operation in a sensor failure by limiting motor operation on the failure of the temperature sensor. Load points are calculated depending on the operating state of a motor and the atmospheric tempera...
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JP5138960B2 |
To improve control accuracy by compensating the linearity error of an analog output sensor of an MR sensor and the like and by reducing individual variations in the detection of an absolute position of rotation angle of a motor shaft. A ...
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JP5136283B2 |
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JP5140109B2 |
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JP2013019190A |
To prevent damage due to leakage current resulting from the adhesion of water to a circuit board.A drive circuit 1 for a motor key comprises two terminals T1-T1 and T2-T2 to one of which a positive voltage is applied when locked or unloc...
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JP5134021B2 |
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JP5129477B2 |
To provide a wiper motor capable of correctly reactivating wiper arms stopping at midway positions. A first sensor magnet 45 having a plurality of magnetic poles arranged in a circumferential direction is fixed on an armature shaft 34a, ...
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JP5127324B2 |
A fan motor speed control circuit includes: a driving circuit configured to drive a fan motor so as to run at a rotation speed corresponding to a drive signal; a comparison circuit configured to output a comparison signal for matching a ...
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JP5121914B2 |
To provide a motor control device, along with a vacuum cleaner and hand dryer, capable of detecting generation of spark using a simple structure with high accuracy, and controls a motor so as to prevent smoking and ignition due to overhe...
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JP5120435B2 |
A motor control device comprises: an acceleration upper limit estimating unit; a target acceleration setting unit; a motor control unit; and a deficit calculating unit, wherein the target acceleration setting unit corrects the target acc...
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JP5120434B2 |
In a band elimination filter, a plurality of capacitors are connected in parallel between first and second terminals of an electromagnetic noise source which generates voltage fluctuations in a connecting lead connected to the first term...
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JP2013501486A |
A commutated electric drive has an electric motor having a sensor assembly which has a permanent magnet on a shaft of the electric motor and an analog Hall sensor situated stationary relative to the stator of the electric motor opposite ...
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JP2013003403A |
To provide an imaging apparatus able to correctly exert feedback control even in an output dead zone resulting from PWM drive control and able to further improve accuracy in a hand shake correction process.The imaging apparatus comprises...
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JP5108584B2 |
When a current input to a step-up voltage device of an electric power steering apparatus is equal to or higher than a first threshold current and an input voltage applied to the step-up voltage device is lower than a first threshold volt...
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JP2012253542A |
To provide a speed control device that implements precise PLL control by detecting a phase difference between a reference pulse and a detected pulse over a wide range and with precision in an inexpensive configuration and reducing the ri...
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JP5102080B2 |
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JP2012249446A |
To provide a load drive control circuit that suppresses malfunctions of loads, and drives and stops the loads more reliably.The load drive control circuit includes: drive means 2 for switching outputs from bridge circuits 10, 20, 30 by o...
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JP3180372U |
To realize a compact and economical power unit monitor mechanism capable of measuring a minute current and a minute time as a configuration for measuring a winding resistance by energizing before and after starting and stopping an electr...
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JP5096020B2 |
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JP5098365B2 |
An electronic apparatus includes: a timer member that clocks time on the basis of the power supplied from a power source. A power supply member supplies the power to an electric motor of the electronic apparatus and to the timer member f...
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JP2012239359A |
To provide a motor drive device capable of achieving miniaturization as the whole device while attaining long service life as the whole device.A drive section 12 includes switching elements 16, 17 of one-circuit two-contact point type co...
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JP5090376B2 |
The invention relates to an electronic control device for regulating the voltage across a high-side load, especially for regulating a fan in a motor vehicle, with a control voltage (V1) which is referenced to system ground and which is m...
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JP5088842B2 |
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JP5092404B2 |
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JP5087376B2 |
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JP5085377B2 |
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JP5076415B2 |
To prevent a conduction failure from being caused by foreign matter caught between relay contacts of a motor relay circuit or any other like cause and leading to the inoperability of an entire system. When a motor relay circuit 43 is on ...
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JP5077607B2 |
An electrical shock absorber 20 of the present embodiment includes a motor 21, which is rotated by approaching and separating motions between sprung and unsprung members which approach and separate from each other; and an electric circui...
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JP5077030B2 |
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JP5074318B2 |
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JP2012221573A |
To provide a lighting indication circuit which enables decrease in program size reduced and simplification of circuit configuration and can therefore achieve cost reduction and downsizing, and a lighting indication device.A lighting indi...
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JP2012222965A |
To provide a blower device for realizing accurate air volume control regardless of a difference of characteristics due to an individual difference of a DC motor or a motor drive circuit.The blower device comprises: a blower 7 including a...
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JP2012218646A |
To provide an electric power steering device capable of detecting abnormality such as disconnection and short circuit of a motor during assist control even when a current sensor fails to operate.When the abnormality of the current sensor...
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JP2012217271A |
To provide a power supply device provided with an overcurrent protection circuit which can be implemented at a low cost by reducing the number of components, and to provide a power supply method.A timer circuit 6 outputs a shutdown signa...
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JP5066101B2 |
Systems and methods of detecting an overload condition. In one embodiment, a method of monitoring a load of a DC motor includes intermittently de-energizing the motor; monitoring a first voltage; and measuring a first interval of time be...
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JP2012211431A |
To provide a movable device using audible sounds generated by a DC motor for recognizing at least one of a plurality of movement patterns of a movable body.A movable device includes a movable body 1, a drive part 2 having a DC motor 20 a...
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JP5060778B2 |
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JP5060750B2 |
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JP5057026B2 |
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JP2012200150A |
To provide a ripple detection device, method and program for a DC motor that can precisely control a cutoff frequency of a filter section by precisely detecting ripple frequencies, and utilize a precise ripple period.The ripple detection...
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