| Document |
Document Title |
|
JP4626744B2 |
|
|
JP4628051B2 |
|
|
JP4623366B2 |
Provided is a motor control circuit in which the circuit structure is not complicated, which has a favorable response to the phase difference signal, and in which the signal variation caused by heat is small. This rotation control circui...
|
|
JP4619040B2 |
An electric drive control device is provided with an electric machine having an asymmetrical salient pole, a current detecting portion, a phase converting device that converts the detected current into an axis current, and a current cont...
|
|
JP4621770B2 |
The invention relates to a fan system for a controllably cooling a vehicle internal combustion engine comprising an electric fan motor and a control unit for controlling said fan motor, wherein said control unit controls the fan motor ac...
|
|
JP2011011567A |
To provide an electric power steering control device capable of continuously performing stable steering operation even at on-failure of a switching element.When a normal circuit or a reverse circuit is in the control state and it is dete...
|
|
JP4613513B2 |
The present invention provides a motor drive apparatus capable of calculating an angular velocity and a rotation angle accurately in the entire rotation velocity range of a motor using a cheap Hall sensor having an inferior accuracy with...
|
|
JP4613387B2 |
|
|
JP4614766B2 |
A drive system for a three phase brushless motor uses an algorithm for position sensing which measures the inductance in the motor phases and determines the position from the measured inductances. In order to reduce acoustic noise, the i...
|
|
JP4615885B2 |
To provide a motor control method and a motor controller capable of protecting a motor appropriately even if a motor power supply is turned off under overload state and then restarted without increasing the number of elements. A load poi...
|
|
JP2011010401A |
To provide a motor controller for accurately estimating a rotor angle for control, even if the rotation speed of a rotor suddenly changes or the rotating direction is not inverted.While a detected rotor angle θr discretely detected by a...
|
|
JP2011010379A |
To provide a motor control device capable of highly accurately controlling a motor to be driven without using a motor angle detecting sensor, even if a motor resistance varies due to a change in temperature or variations in production.An...
|
|
JP4610107B2 |
|
|
JP4608987B2 |
To simplify constitution and implement motor control corresponding to a load. A control section 40 controls at least one of drive parameters, such as drive voltage, drive duty ratio and drive timing, drives a built-in motor such as an ir...
|
|
JP4613071B2 |
|
|
JP4612508B2 |
To provide an electric power steering device preventing breakage of a field effect transistor in feed forward-control. The electric power steering device is provided with a target current setting part 34 for setting a target current fed ...
|
|
JP4604595B2 |
|
|
JP2010283976A |
To provide a motor drive unit which prevents a malfunction due to a short-circuit between terminals when wet.In an IC (Integrated Circuit) 10 with a built-in control circuit 2 which controls drive of a motor, terminals i, j to be connect...
|
|
JP4598697B2 |
To provide a wiper device capable of certainly reversing a wiper blade at a reversing position without overrunning the wiper blade. This wiper blade is provided with a wiper arm 12 to which the wiper blade 10 is connected, a wiper motor ...
|
|
JP4598451B2 |
The controller (1) has a semiconductor switch (T1) with an end connected to an end (P) of a power supply source. A relay (RLY1) is connected to another end of the switch and is connected selectively to a low or high speed function end. A...
|
|
JP4597381B2 |
In a device (1) having a variable-speed motor (2), a single switching device (9) has been provided for influencing the speed of the motor and for generating turn-off voltage transients (SP) on a coil terminal (3b) of the motor. The turn-...
|
|
JP4596866B2 |
A converter circuit for converting an output voltage from an AC power supply includes a rectifier circuit for rectifying the output voltage of the AC power supply; first and second capacitors connected in series, for smoothing the output...
|
|
JP2010279098A |
To solve the problem associated with conventional current control circuits in which a current is not controlled with high accuracy.A current control circuit includes: a transistor 107 that controls a current passed through a load; a sens...
|
|
JP4594186B2 |
|
|
JP4593250B2 |
|
|
JP2010269914A |
To provide a paper post-processing device and a document processor reducing motor malfunction caused by the adhesion of brush abrasion powder without having influence on productivity and conveying quality.The paper post-processing device...
|
|
JP2010263723A |
To suppress a peak value of a recovery surge voltage from becoming large.A power supply device includes: a battery 29; a film capacitor 21; transistors 23, 25; gate resistors 24, 26; a flywheel diode 22; a current sensor 27; and a contro...
|
|
JP4581171B2 |
|
|
JP4576875B2 |
|
|
JP4573008B2 |
To provide a solenoid drive control circuit capable of enabling a dither current necessary in the whole range of a solenoid exciting current to flow. Detection signal of an exciting current is inputted into an arithmetic device 7 for obt...
|
|
JP4575453B2 |
The invention relates to a device (10) for the incremental control of at least one first direct-current motor (12) for the cooling fan of a motor vehicle. Said device comprises a first (14) and a second current-limiting component (16), a...
|
|
JP2010246287A |
To solve the problem of a conventional current control circuit that cannot supply a high-accuracy current due to temperature change. The current control circuit includes: a transistor 110 which controls a current flowing to a load 117; a...
|
|
JP2010236803A |
To solve a problem on difficulty in control of air volume with high accuracy as it is difficult to PWM-drive a DC motor with a desired duty, as command voltage-duty characteristic of a motor driving circuit for driving the DC motor has i...
|
|
JP4565466B2 |
A motor drive device which controls a spindle output predriver unit and power MOSFETs of an output stage associated with it to form a PWM signal in such a manner that a detection current formed by a DC shunt resistor and a sense amplifie...
|
|
JP4564288B2 |
|
|
JP2010233305A |
To provide a motor controller that extends motor life.For example, a binary (supply voltage Vdd and ground voltage GND) PWM signal from an external terminal PWM and a binary (Vdd and GND) set voltage from an external terminal T2 are divi...
|
|
JP2010233440A |
To provide a motor control device which lowers a torque vibration easily and reliably down to a half or lower.The motor control device 10 performs a rotation drive of a DC motor M with brushes on the basis of application of a driving vol...
|
|
JP4560953B2 |
|
|
JP2010226948A |
To provide a controlling circuit for a motor without complicated circuit configuration, with superior responsiveness to a phase-difference signal, and with less signal variation due to heat.The rotation controlling circuit of the motor h...
|
|
JP4557387B2 |
|
|
JP2010220294A |
To provide a motor controller which avoids the occurrence of such a fault that a voltage is kept applied to the terminal of a motor in case that a fault occurs at a motor voltage detecting part and that welding occurs at a relay contact ...
|
|
JP4552543B2 |
To estimate the temperature state of a motor accurately based on the driving amount thereof. The overheat judging device of a motor comprises a section for acquiring information about the driving amount of a judgment object motor and inf...
|
|
JP2010207007A |
To provide a motor controller capable of suppressing an excess current resulting from a back electromotive force.The motor controller includes a decision means S101 deciding the positive or negative decision value subtracting a back elec...
|
|
JP4543939B2 |
A correction value calculating method includes: preparing a printer including a motor, a PID control system for controlling the motor, and a memory for storing a correction value, the printer being configured to calculate a value of a cu...
|
|
JP2010200409A |
To provide an actuator controller which can detect an abnormality in a motor and also reduces the possibility that a drive circuit for the motor may break by an overcurrent.An actuator controller has a first switch circuit part, which co...
|
|
JP4541022B2 |
The method involves applying voltage to the phase winding of a stator independent of the period of the movement of the rotor, and detecting peak of current waveform to determine the position of the rotor. Independent claims are also incl...
|
|
JP4541723B2 |
A motor driving apparatus includes a power circuit that controls an output voltage via a feedback resistance (1-16, 1-17, 1-18). The power circuit varies the output voltage by changing a value of the feedback resistance (1-16, 1-17, 1-18...
|
|
JP2010193703A |
To detect a counter electromotive voltage favorably.A motor drive circuit 100 includes an H bridge circuit 10, a potential difference detecting circuit 20, a calibration circuit 30, a counter electromotive detection circuit 40, a control...
|
|
JP4535659B2 |
An electrical circuit arrangement for controlling a unit, such as an adjustment system for windows or a sliding sunroof, that is driven by a motor and is situated in a motor vehicle. The arrangement guarantees that, in the case of a shor...
|
|
JP4530521B2 |
A problem to be solved by the present invention is that, in a conventional system for controlling electric power steering, as the number of revolutions of a motor is increased, an assist force decreases, resulting in faulty steering resp...
|
