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JP5908224B2 |
A PWM mode for turning on and off two output transistors by an output of a high impedance circuit and a constant voltage mode for controlling voltages at two output terminals by an output of an op amp are provided. Then, the two modes ar...
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JP2016052153A |
To provide a motor control device which reduces a switching noise which occurs when driving a motor, and restrains a rush current at switching on the power if a capacitor of low ESR is used.A resistor having a sufficiently high resistanc...
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JP5897923B2 |
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JP5888454B2 |
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JP5889570B2 |
To provide a DC motor control device, which supplies a DC voltage to a DC motor with an AC-DC converter and supplies a DC voltage to a microcomputer with a DC-DC converter operating on an output voltage of the AC-DC converter, the DC mot...
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JP5883319B2 |
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JP5872250B2 |
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JP5872047B2 |
The invention relates to a drive arrangement for the motorized adjustment of an adjustment element of a vehicle, wherein at least one drive comprising an electric drive motor and a drive control means and is connected to a supply, wherei...
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JP5873287B2 |
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JP5867354B2 |
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JP5862341B2 |
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JP5858691B2 |
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JP5844083B2 |
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JP2016500507A |
The present invention is a method for monitoring one half-bridge branch (38) of the half-bridge (32), which is connected in series with another half-bridge branch (36) via an intermediate tap (30) in the half-bridge (32). With respect to...
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JP5834730B2 |
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JP5834729B2 |
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JP2015229944A |
To provide an engine starter capable of realizing shorter engine start time without reducing a motor rush current reduction effect.An engine starter 1 comprises: a rush-current reduction means 5 reducing a rush current of a motor 6; and ...
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JP5833047B2 |
An embodiment of pulse width modulated (PWM) signal generator includes a module or modules to calculate an amount of change in a period length and duty ratio of an output signal during a transition period between a first signal waveform ...
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JP5829006B2 |
The power circuit comprises a voltage conversion part converting an input voltage entered in accordance with a voltage of a power source to generate an output voltage and outputting the generated output voltage to the motor and a current...
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JP2015220803A |
To provide a motor controller capable of appropriately controlling a motor on the basis of an accurately estimated motor current even when heat generation and the like are caused in the motor.A motor controller comprises: a PWM output se...
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JP5826873B2 |
The present invention advantageously provides a motorized roller shade that includes a shade tube, a motor/controller unit and a power supply unit. The motor/controller unit is disposed within the shade tube, and includes a bearing, rota...
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JP2015211636A |
To solve the problem which increases the number of long wires inside a vehicle body and makes a control system heavier and more expensive when motors and a controller are remote from each other.A circuit (10) for determining a position o...
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JP2015211578A |
To provide a motor driving device for reducing power consumption while preventing short currents from running via switching elements making a pair in synchronous rectification control.A synchronous rectification control circuit 42 of a D...
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JP5809461B2 |
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JP5810566B2 |
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JP5806447B2 |
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JP5798832B2 |
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JP5787704B2 |
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JP2015167458A |
To stably rotate a DC brush motor.A motor control device 10 is equipped with a DC brush motor 9 including a plurality of commutators 93, and a brush with which each commutator slides and contacts; driving means 105 for driving the DC bru...
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JP5778925B2 |
A motor-drive circuit includes: a filter circuit to attenuate a frequency band including a resonance frequency of an actuator in a target-current signal, the target-current signal corresponding to a digital signal indicative of a target ...
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JP5779530B2 |
An inverter includes an inverter device, a current detection unit, an edge conversion unit, and an edge determination unit. The inverter device outputs three-phase alternating currents to drive an AC motor. The current detection unit det...
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JP2015162964A |
To provide an inexpensive power window drive unit mounted on a vehicle.The power window drive unit has a drive circuit 80 which includes: a motor 10 that drives a window glass to raise or lower; a first down-drive switch 30 and a second ...
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JP5773932B2 |
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JP5772020B2 |
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JP5773742B2 |
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JP5772359B2 |
An ECU (11) that controls a motor (12) includes: a target current value setting unit (30) setting a target current (It); a voltage detecting unit (50) detecting a detected voltage (Vd) on the basis of a detection signal from a voltage se...
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JP2015154578A |
To prevent reduce noise which is generated when mechanical schemes are abutted with each other by backlash of mechanical schemes (gear trains) mounted to a motor when starting driving the motor, without being influenced by load fluctuati...
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JP2015154658A |
To provide a circuit device, electronic equipment, and the like, capable of achieving lower power consumption and reduction in the number of components by eliminating the need for a sense resistor.A circuit device includes: a bridge circ...
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JP2015144506A |
To provide a circuit device and electronic equipment that can suppress detection variation of chopping current.A circuit device 200 has a bridge circuit 210 comprising high-side transistors Q1, Q2 and low-side transistors Q3, Q4, a contr...
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JP2015139232A |
To estimate the coil resistance value of a motor, with a simpler configuration.A method for controlling a motor controller includes a voltage value acquisition step (S601) for acquiring a voltage value inputted to a driving part performi...
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JP5757150B2 |
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JP2015136266A |
To reduce high frequency noise due to a through current generated immediately after switching of a switching element, in a motor controller for seat belt motor drive, without causing any problem of heating.In order to suppress the peak o...
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JP2015133835A |
To provide a compact and inexpensive motor driving apparatus capable of preventing generation of brush noise in a commutator motor.A motor driving apparatus determines timing ta of generation of brush noise by detecting a motor current I...
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JP2015133820A |
To increase horse power of a motor.A rotation shaft of a motor is divided into N units in a shaft direction. A phase of current to drive the motor is changed for 1/N of the divided rotation shaft to drive the motor.
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JP5749529B2 |
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JP5749527B2 |
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JP2015122610A |
To reduce the mounting space required for flyback circuit.A flyback circuit according to the present invention includes: a motor 160; a power supply 110 for supplying a voltage to the motor 160; a flyback line 194 connecting the motor 16...
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JP2015116321A |
To enable appropriate protection of a control circuit from thermal damage.A control device of a vehicle lifting device is applied to a lifting device comprising a lifting mechanism that is driven by an electric motor and lifts a platform...
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JP5730829B2 |
A motor control device (a motor driver 200) for controlling, by a duty control, a current supplied to a motor 9 includes a driving controller 220, an off controller 230, and a voltage acquiring section (an A/D conversion processor 210, a...
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JP5731753B2 |
A motor driving circuit receives a control pulse signal pulse-width modulated according to a target rotational speed, and drives a fan motor. A start pulse signal generating unit generates a start pulse signal having a predetermined duty...
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