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JP2000354394A |
To provide a DC motor controller in which a DC motor is prevented from being stopped erroneously in operation due to erroneous judgment of locked state.The DC motor controller comprises a relay 31 for turning power supply to a DC motor 3...
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JP3117905B2 |
To obtain a low cost dynamic brake by connecting a nonlinear control resistor with the input connector for a synchronous motor and closing the stator winding thereof via the resistor. In a frequency converter, where the rectified output ...
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JP3118988B2 |
PURPOSE: To obviate the need for a step-up transformer and scale up a device and prevent the cost increase by regenerating electrical energy generated by a winding having a large number of turns and being used for driving at a low speed ...
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JP2000339035A |
To stop a motor on an accurate position and to shorten time to be required for stop control.The motor controlling method for stopping an object on a prescribed target position drives a motor at a 1st required speed (high speed) up to the...
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JP3114952B2 |
PURPOSE: To operate and stop a continuous printer paper cutter at correct positions irrespective of the using condition of the cutter. CONSTITUTION: This controller is provided with a cutter 30 which is equipped with a position detecting...
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JP2000326265A |
To provide a battery power tool improving use convenience, by providing a discharge stop voltage control circuit to forcedly stop a discharge when battery voltage is lowered down, also providing a brake control circuit to supply kinetic ...
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JP2000324605A |
To eliminate a brake off feeling when a transfer is made from a regenerating brake to a plugging brake or power running control. This device, comprising a DC motor 7 for running a vehicle, forward/reverse contactors 8, 9 switching a dire...
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JP2000320246A |
To provide a power window controller which can open a windowpane even in a state that a rotary signal ceases to be generated by providing an open switch, a closing switch, a motor, a rotational detection sensor, and a control unit. This ...
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JP3111121B2 |
PURPOSE: To provide the method of controlling the motor of a power window device, which performs sure control without operating the motor continuously, with the present position dislocated, even if it occurs divergence in the detection o...
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JP2000313258A |
To provide a motor drive circuit having a backup function. A bypass circuit 18 for connecting a switch circuit 14 to a relay circuit 15 without passing through a CPU 11 is provided. Therefore, even if the CPU 11 becomes inoperative, a dr...
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JP3107831B2 |
A protecting method and apparatus for a regenerative resistor in which a regenerative resistor is satisfactorily protected from a thermal breakage caused by an over-regeneration by combining a protection of the regenerative resistor by a...
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JP2000312491A |
To properly and gently start and stop a motor despite very simple overall constitution by combining an off-delay circuit, a ramp circuit, a duty ratio-variable circuit, and a switching element. A ramp circuit 15 smoothly increases output...
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JP3107230B2 |
A three-phase motor (10) is operated by a controller having sets of thyristors (16,17,18) which when triggered switch electricity from each phase (A,B,C) of a supply to the motor. The motor (10) is started by triggering the thyristors (1...
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JP2000308381A |
To stop the drive of motor to detect accurate origin of a print head when the vibrating condition generated with contact to a contact object becomes the preset constant number of rotations. After comparison with the motor rotating direct...
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JP2000305628A |
To decrease two cores of control wiring from a job site to a controller for each controller by setting a voltage, which is to be applied through a second limit switch and an electroresistor serially connected thereto to an auxiliary rela...
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JP2000308392A |
To obtain an inexpensive high function operation controller for capacitor motor being employed for opening/closing an automatic door, shutter, and the like, in which wiring work is saved and the driver is simplified. An intermediate tap ...
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JP2000296492A |
To reduce the weight and size by connecting a commercial power supply to an input side, connecting coils for an electromagnetic brake to an output side, arranging a rectifying device between one end of the input side and one end of the o...
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JP2000295880A |
To recognize a complete return to a valve-open state of a gas cutoff valve by a return operation member. Control in which a gas cutoff valve interrupted by operating a return operation member 2b by driving a motor 2a-1 in response to val...
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JP2000295879A |
To simplify open-close position detecting control of an open-close body while lengthening the lifetime of a memory in which the position of the stop of the open-close body is stored. A preceding positional data EM is read from a memory 2...
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JP2000295706A |
To eliminate voltage fluctuation at a power receiving end which is to be caused by voltage drop when load changes, stabilize running performance, and enable not dynamic braking but regenerative braking, in a battery floating charge syste...
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JP3099023B2 |
PURPOSE: To simplify a control amount limiter for a motor to so control as not to operate the motor over a range of a predetermined rotating angle without providing a resistor, etc., for absorbing a counterelectromotive force of the moto...
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JP2000287471A |
To obtain a motor drive control circuit which is free from malfunctioning and can control the drive of the motor securely. A lead relay L whose drive coil LC is excited by a locking current generated when a motor M is locked and whose le...
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JP3096447B2 |
A control system controls a hybrid vehicle having an engine (1) for rotating a drive axle (2), an electric motor (3) for assisting the engine (1) in rotating the drive axle (2) and converting kinetic energy of the drive axle (2) into ele...
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JP2000280867A |
To prevent a wiper motor from being damaged by burning at the time of snow fall, to determine whether moter locking is adversely affected by snow, and to draw a clear line between single motor locking and a failure due to short-circuitin...
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JP2000278977A |
To prevent an inverter from failing and to securely obtain a starting torque by driving a motor based on a frequency and a voltage based on a specific polygonal line pattern of frequency and voltage in starting and linearly decreasing th...
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JP3095083B2 |
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JP2000270588A |
To reduce rotation period, while the rotary shaft of a dynamic pressure motor is brought into contact with a bearing and reduce the wear of the shaft and bearing. A velocity command signal and a velocity detection signal related to a dyn...
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JP2000270594A |
To avoid inertia motion of a drive for the lifting mechanism of a lifting device, after the operation motion is cut off. A drive motor is a universal motor 1, which has one or more stator windings 3b and 3c and one rotor winding 3a conne...
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JP3090823B2 |
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JP2000261903A |
To stop an electric rolling stock by operating only an electric brake, until the speed of the rolling stock becomes zero. In electric rolling stock control equipment, which vector-controls an induction motor 1 driving a rolling stock by ...
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JP2000253685A |
To provide a motor control circuit which can contrive cost down, life elongation, and downsizing. A motor control circuit 20 is equipped with a transistor 21 which performs the ON/OFF of the power voltage to be applied to a DC motor 7, a...
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JP2000253686A |
To provide a motor controller where the tolerance range for not letting an overcurrent flow to the switching transistor of a regenerative circuit at power regeneration can be set widely. This power regenerating circuit is composed of a r...
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JP3086080B2 |
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JP2000245182A |
To effectively and accurately detect foreign objects caught by a power window according to fluctuation in a load on a motor by providing a driving sensor, which outputs speed signals corresponding to the driving speed of a vehicle and a ...
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JP2000245183A |
To reduce the cost of the drive controller of a power window system and make it operable, when its feeding voltage is lowered. A drive controller of a power window system has such a pinch- sensing circuit 5 that, by monitoring the curren...
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JP2000245184A |
To prevent malfunctions in a circuit for controlling the start/stop of a motor by surely initializing its predetermined circuit, when starting the motor. A sensing circuit 3 measures and senses via a sensor S the internal temperature of ...
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JP3084832B2 |
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JP2000236684A |
To prevent breakdown of source-side transistors, when a motor is braked. This motor is constituted such that when a brushless motor in forward rotation course is made to rotate in the reverse direction, source-side and sink-side transist...
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JP3082605B2 |
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JP3080339B2 |
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JP2000224758A |
To provide a motor driving control circuit for driving a motor under control accurately without erroneous operation. A rotating state and a locked state of a motor (M) are detected by a tacho-generator TG, and power continuity or power b...
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JP2000224759A |
To provide a motor driving control circuit for driving a motor under control accurately without erroneous operation. A motor driving control circuit includes a lead relay (L) or the lead relay (L) and a relay circuit, in which a first dr...
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JP2000510319A |
PCT No. PCT/SE97/00766 Sec. 371 Date Nov. 10, 1998 Sec. 102(e) Date Nov. 10, 1998 PCT Filed May 9, 1997 PCT Pub. No. WO97/43821 PCT Pub. Date Nov. 20, 1997A method and a device for electrical braking of an all-mains motor by which discon...
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JP2000217383A |
To avoid a motor from being intermittently stopped by a little temperature change while the rotation control of the motor is maintained. A thermistor S is provided on the stator side of a motor M to detect a temperature. A comparison uni...
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JP2000214937A |
To provide a power circuit for air conditioner capable of reducing power consumption in a remote control standby mode. This circuit is provided with a rectifier circuit 3 connected to a commercial power supply 1, a 1st switching means 2 ...
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JP2000211429A |
To increase satisfactory operation of a circuit and the durability of a positive-characteristic thermistor. A resistor RO is connected to a relay coil RC in parallel. Relay coil applied voltage ER is separated from resistor applied volta...
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JP2000209884A |
To provide a variable speed device which does not require external circuit for the generation of a variable speed command and can automatically change set values for level discrimination and the number of revolutions and direction of rot...
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JP2000209868A |
To start retry operation early upon occurrence of an overvoltage by operating a power generating/discharging circuit (hereinafter, referred to DBR) upon occurrence of an overvoltage thereby lowering the voltage of a DC circuit quickly do...
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JP2000209883A |
To ensure a constant relay function time at all times by inserting a delay circuit between a button and the relay coil of a relay circuit and delaying function of the relay circuit on the button operation side when the button is switched...
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JP2000209895A |
To enhance reliability of braking operation when a switching is made from motor mode to braking mode by providing a main operation transformer having a secondary winding being connected in a braking circuit. A transformer 26 is connected...
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