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JP3570119B2 |
To enable accurate and reliable position detection of a moving body for a long period of time by improving durability with a simplified structure. A switch lever 23 and a moving body are coupled via a play in a stroke which is a little s...
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JP3570289B2 |
To obtain a motor controller in which a dark current is prevented from flowing through a controller by interrupting the power supply to the controller after resetting the motor load when a key switch is opened. A power supply on/off circ...
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JP3567628B2 |
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JP3567440B2 |
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JP2004260971A |
To provide a motor control circuit which can automatically stop a motor when CPU runs away in a simple circuit.A motor control circuit 100 comprises a drive voltage control circuit 2 which regulates drive voltage and outputs it under ins...
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JP3565355B2 |
PURPOSE: To efficiently recover the brake energy by operating a regenerative brake in priority to a frictional brake and to effectively operate the frictional brake by changing the gradient after restriction, by restricting the operation...
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JP3566443B2 |
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JP3566527B2 |
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JP3564589B2 |
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JP3564595B2 |
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JP3562960B2 |
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JP3563407B2 |
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JP3564008B2 |
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JP3562171B2 |
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JP2004248489A |
To provide a power supply apparatus for a motor in which the number of components is reduced and which can reduce a product size and a manufacturing cost.The power supply apparatus for the motor includes a DC power supply unit having a p...
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JP3559950B2 |
To arrange a constitution such that obstacle sensing and limit sensing can be set to sensing precision different between the time of opening sensing and the time of closing operation, in an electrical switch for building which detects th...
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JP2004242500A |
To provide a control method for a switching device of an electric-car door comprising a linear synchronous motor consisting of permanent magnets and an armature coil.This control method for the switching device of the electric-car door c...
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JP3557884B2 |
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JP2004236397A |
To provide a controller of a power converter which realizes increase in an electric brake operating range in a high speed zone by a stable control at low cost.A line breaker control means 18 for opening a line breaker 8 and a line breake...
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JP2004236371A |
To provide a motor controller using an inverter device which protects it from overvoltage by providing it with an effective restraining means against surge voltage at turning off of an IGBT in regeneration.In the case that the above dete...
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JP2004236479A |
To provide an actuator for a cut-off valve in which power consumption can be reduced when the valve is held open through a simple structure.The actuator for a cut-off valve comprises an operation shaft 18 imparted with a running torque i...
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JP3555357B2 |
To detect a current at the time of DC brake and surely control an applied brake voltage by fixing the DC voltage applying pattern of DC brake and applying DC brake only at the time point, when the phase current of a current detector beco...
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JP2004523995A |
A speed controller operates a DC-powered fastener drive assembly to efficiently drive fasteners from a DC power supply, thereby achieving a fully portable hand tool. In particular, the speed controller accelerates a flywheel with a DC mo...
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JP2004222432A |
To achieve fail-safe by making a motor perform dynamic electric braking even if a switching device which constitutes an H-type bridge circuit has failure, in a motor drive in which current conduction to the motor is controlled by the H-t...
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JP3550489B2 |
To stop a DC motor in an accurate position and to improve the durability of the motor. When the motor rotates at speed N1 with regular voltage driving, a system is switched to low voltage driving so that it moves a prescribed section B b...
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JP3548677B2 |
To unify the position data systems of different kinds of opening and closing devices by controlling the present position of a target to be opened and closed on the basis of the electric motor pulse signal from a converting means and a se...
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JP3546930B2 |
To provide the control device of an electric brake capable of stopping a vehicle with only the electric brake, without using friction brake and can surely maintaining the stopped state. A control device 10 for an electric brake is provid...
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JP2004208454A |
To provide a brake circuit for a motor which can quickly stop a motor in the case that a driven object runs over an emergency stop limit.Since the reversed input of an AND circuit 31 reaches an "L" level when a brake signal reaches an "H...
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JP2004208492A |
To provide a inrush motor current preventing and dynamic breaking apparatus capable of reducing the number of components, size, and the costs by sharing an inrush current prevention circuit and a dynamic break circuit.The inrush motor cu...
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JP3543932B2 |
To provide a method of controlling regenerative braking of a motor- driven car, capable of controlling regenerative charging current and braking torque even at high speed and ultrahigh speed range. By controlling switch elements Su-Sw on...
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JP2004201485A |
To provide an excellent AC or DC motor capable of generating rotary torque by controlling a supply current to a coil for forming a given flux distribution.The motor comprises a coil energization state switching means for changing to eith...
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JP3542290B2 |
To attain downsizing and cost reduction in a drive circuit by restraining peak current which passes through a DC motor, while avoiding degradation in the rising characteristics of the DC motor. The current passing through a DC motor 14 i...
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JP3543009B2 |
PCT No. PCT/EP96/05319 Sec. 371 Date Jun. 10, 1998 Sec. 102(e) Date Jun. 10, 1998 PCT Filed Dec. 2, 1996 PCT Pub. No. WO97/22175 PCT Pub. Date Jun. 19, 1997In a series-wound motor with electric brake, which comprises an armature provided...
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JP3543127B2 |
PURPOSE: To prevent a wiper from stopping on a wiping face and to stop the wiper in the predetermined position when it is not used by stopping the wiper after continuing operation of the wiper to the predetermined stopping position even ...
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JP3543093B2 |
PURPOSE: To prevent a wiper from stopping on a wiping face and to stop the wiper in the predetermined position when it is not used by stopping the wiper after continuing operation of the wiper to the predetermined stopping position even ...
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JP3540031B2 |
PURPOSE: To obtain a brake circuit for a single phase series commutator motor in which the cost is reduced while prolonging the service life. CONSTITUTION: The brake circuit for a single phase series commutator motor comprises a main win...
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JP2004518551A |
The invention is based on a hand power tool having an electric motor ( 12 ) located in a housing ( 10 ), via which an insertable tool ( 16 ) situated in a tool mount ( 14 ) is capable of being driven in a rotating manner, and having a sa...
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JP2004180400A |
To provide an electric actuator control device which can precisely perform the protection of a motor when the motor causes hunting or is locked.This electric actuator controller is equipped with an overcurrent detector 7 which detects th...
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JP2004173402A |
To normally stop the motors for driving a wire in synchronization if power supply is stopped due to a power failure, such as service interruption.A wire saw is so designed that the cutting wire is driven by the driving motor 25 and the l...
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JP2004173348A |
To provide an electric motor control device capable of ensuring a fail safe mode even if failure occurs in an overcurrent detecting part.This electric motor control device 10 comprises the overcurrent detecting part 24 for fetching a det...
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JP2004166480A |
To provide a power feeding device and a method for motor power supply capable of using resistance for inrush prevention and protection against overvoltage, and of reducing the number of parts and manufacturing cost in designing a circuit...
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JP2004166441A |
To realize an electric-powered steering apparatus having a relatively high power with a circuit configuration, capable of standardizing or facilitating most components for different power source circuits.The electric-powered steering app...
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JP2004166435A |
To ensure that a device not be immediately stopped, if any temperature anomaly occurs but the device is stopped, only when a temperature anomaly lasts, even after one cycle of intermittent operation has been completed for the enhancement...
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JP3531498B2 |
To control a motor by accurately obtaining the final stop position of the rotating member without receiving influence of elongation of wire coupling between a DC servo motor and a valve. A rotating member 2 to be driven with a DC servo m...
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JP3531416B2 |
To reduce the reversing noise of a blade rubber by detecting the current supplied to a motor, and interrupting the power supply to the motor only for the prescribed period when the detected current is changed in the reducing direction an...
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JP3528445B2 |
To minimize the section of a second moving speed which is a minute speed, prevent the vigorous collision with a door stopper, and dispense with regulation of decelerating position by changing the decelerating position on the basis of cha...
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JP2004140995A |
To provide a method and a device related to stopping and controlling of the DC motor of a power tool.As the method and the device for stopping the motor, a shutdown power switching element is provided that connects both ends of motor win...
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JP3525715B2 |
To prevent malfunction caused by a fluctuation in the operation of a motor. A holding circuit 3 is formed at the output end of a detecting circuit 2 which is constituted of a comparator CP and resistors R1-R4. When input voltage from the...
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JP3525297B2 |
A medical infusion pump (10) including an improved electric motor assembly (256). The medical infusion pump (10) includes a pumping mechanism (250) and a pump chamber (132) in an operative position with respect to the pumping mechanism (...
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JP2004135422A |
To solve such following problem that an expensive mechanical brake is required for prevention of high speed rotation without using a PWM converter in a generator for a distributed power supply for fetching maximum output from a windmill ...
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