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JP5285930B2 |
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JP5286835B2 |
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JP5281301B2 |
A control apparatus for controlling a fuel pump includes: an electronic switch provided in a circuit for connecting a power supply to a motor for driving the fuel pump; a current detector which detects a current which flows through the m...
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JP5282412B2 |
To provide a ripple detector with its circuit for ripple detection reduced in size. In the ripple detector 100A for motors, a motor current IMis converted into voltage through a sensing resistor Rs placed in its current passage. The volt...
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JP5278084B2 |
To suppress ripple generation and noise without enlarging components constituting a filter or increasing the number of components. In order to reduce noise that may occur when an FET 3 performs a switching operation, capacitors 10-12 are...
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JP5277671B2 |
To provide a motor driving device compatible with positive/negative voltage command signals by a circuit scale smaller than that of the conventional one. The motor driving device 10 includes a comparator 11 for comparing signals with eac...
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JP3185587U |
The present invention provides an auxiliary excitation winding set to be installed at the rotary part of the electric machine (104) composed of a rotary part of the permanent magnetic electric machine or a rotary part of the reluctance e...
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JP5270119B2 |
To provide a motor ripple detector that makes can accurately determine the operating state of a motor and enhance the accuracy of the detection of ripple pulses outputted from the motor. Motor ripple detection processing is carried out a...
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JP5266913B2 |
To provide a highly reliable controller of an electric power steering device which certainly detects a state of a current detection circuit by directly applying a detection voltage to the current detection circuit in consideration of inf...
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JP5267058B2 |
To improve the durability of a motor actuator while allowing the abrasion of a sliding contact point in the motor actuator which performs position detection using a sliding contact method. When a plurality of sliding contact points (155,...
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JP5271304B2 |
To provide a motor controller which reduces switching loss. The motor controller includes: a motor M, which drives a pump for controlling the liquid pressure of a brake fluid pressure control device provided on a vehicle; a drive circuit...
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JP2013162701A |
To prevent a DC electric motor from being driven in an abnormal state in which the motor is not reversely rotated.A controller 8 of a DC electric motor control device 10 operates a motor driving circuit 7 to control a normal rotation or ...
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JP2013162568A |
To provide a motor drive control system capable of suppressing a malfunction due to a misdetection of current passing through an H bridge circuit.A motor drive control system includes a backflow detection circuit that outputs a backflow ...
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JP2013158067A |
To avoid causing a reverse current to a power line resulting from series resonance caused by a parasitic inductance of the power line and a capacitive component of an external decoupling capacitor.A series connection of a transistor sect...
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JP2013158066A |
To suppress a reverse current to a power line resulting from series resonance caused by a parasitic inductance of the power line and a capacitive component of an external decoupling capacitor.A series connection of a transistor section 1...
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JP5263524B2 |
To provide a DC motor with brush, which can be driven even in case one hand in a pair of brushes is faulty, and also provide a motor circuit and an electric power steering apparatus, which are equipped with the DC motor with brush each. ...
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JP5263143B2 |
To provide a motor control unit for simultaneously achieving both vibration suppression in a machine and quick response of a motor position to a position command, and determining a saturation of a torque command in advance without operat...
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JP5261070B2 |
To provide a rotation state detection device for a DC motor capable of detecting a rotation state of the DC motor using ripple pulses, and determining a detection ability of the rotation state using the ripple pulses. The rotation state ...
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JP5259241B2 |
A motor control device includes a magnetization control unit energizing a motor winding to change magnetic flux content of permanent magnet motor, a current detector detecting current supplied to the motor, a vector control unit includin...
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JP5256413B2 |
A motor driving circuit for controlling a current amount flowing through a motor coil includes: a comparator configured to output a comparison signal indicating a comparison result between a set current amount and a current amount based ...
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JP5256619B2 |
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JP5252907B2 |
This invention provides a motor control device (100) that rotates a motor (M1, M2, M3, M4), based on a fact that an operation knob (11) of an operation switch (1) is actuated in a predetermined direction, in a direction corresponding to ...
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JP5253950B2 |
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JP5249023B2 |
A workpiece system with a reciprocating motion which includes a motor assembly for producing an output drive signal with a periodic force pulse. The drive signal is coupled to a driven member assembly through a magnetic arrangement, wher...
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JP2013143856A |
To provide a more compact motor controller which is hardly affected by voltage clamp due to a constant voltage diode.A motor controller 1 comprises: a motor path 2 for supplying power from a battery B to a motor M; a control IC4 for swit...
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JP5233966B2 |
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JP2013135601A |
To solve the problems in which: although both of a computer and a machine need to have a connectable terminal shape and recognize a communication method in order to operate the machine by using the computer, these may become useless when...
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JP5228630B2 |
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JP5225664B2 |
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JP5222603B2 |
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JP5223402B2 |
To suppress the breakage of a switching element by properly dispersing and absorbing flyback energy by a simple and small structure at low cost, and furthermore, to elongate a drivable time, in a motor drive control device for a vehicle....
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JP5223623B2 |
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JP5223894B2 |
To surely determine whether a valve body serving as a body to be driven is normally shifted from a non-restricted state to a restricted state in an electric driving device 1.According to the driving device 1, control means 12 stores a th...
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JP5219391B2 |
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JP2013123364A |
To provide a PWM controller capable of achieving high reliability by materializing a protective function against a short circuit of a power supply end or a signal line which may occur in a motor controller without necessity for use of an...
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JP2013121294A |
To provide a fault diagnostic device for a motor for electric power steering which can shorten a waiting time for fault diagnosis.A fault diagnostic circuit (control circuit 57) turns on either a second or fourth switching element (FET#2...
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JP2013121308A |
To realize a piezoelectric element driving circuit that operates at low power consumption while securing a high driving voltage for a piezoelectric element.A piezoelectric element driving circuit 10 comprises: an H-bridge circuit 11; low...
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JP2013118781A |
To provide an image forming apparatus capable of detecting a rotation direction of a motor with a simple configuration.An image forming apparatus is provided in which a carriage with a printer head is reciprocated in a main scanning dire...
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JP5211668B2 |
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JP2013110863A |
To provide an H bridge circuit that improves motor rotation efficiency while suppressing the occurrence of a reverse current and noise when applied to a motor.The H bridge circuit includes: an H bridge 1 comprising MOS transistors Tr1-Tr...
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JP5196811B2 |
A motor drive device of the present invention includes: an output circuit provided with a switch element connected to a motor; a PWM signal generating circuit for generating a PWM signal having a duty corresponding to a ratio between a p...
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JP5195705B2 |
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JP5187653B2 |
A rocking seat control apparatus for a moveable seat supported and having a magnetic member attached thereto is provided that is capable of maintaining the seat being rocked constant in rocking amplitude. The apparatus includes a solenoi...
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JP5184395B2 |
To control overrun of a blade during inversion while suppressing variations of a wiping cycle. An elapsed time t and a target rotational speed TR of a motor are obtained (S1, S2), and a current position of a blade and a current rotationa...
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JP5176472B2 |
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JP5173220B2 |
To detect on failure of a transistor even during control of a motor with good precision through a simple arrangement. The motor controller for controlling a DC motor 15 by an H bridge circuit 25 consisting of four transistors 21-24 compr...
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JP5171225B2 |
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JP5158376B2 |
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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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