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JPH11256924A |
To prevent traveling of a device in an inclined condition and runaway thereof by comparing a count value of a rotary encoder provided in driving units in front and rear of an electric panel with a computer, and stopping the device when a...
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JPH11256925A |
To provide the running control method of motor-driven partition by which partitioning operation of a panel can be carried out in a short time efficiently and surely. Because how much shake and settlement exist on the previously ascertain...
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JPH11256923A |
To improve the efficiency and safety of traveling by controlling the traveling speed while comparing a count value of a rotary encoder with a block distance value inside of a memory with a computer in response to the residual traveling d...
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JP2949964B2 |
PURPOSE: To achieve high speed seek operation at low cost by dividing max. moving speed of a head to a target position equally into N and storing previously the information of track differences corresponding to these equally N-divided in...
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JPH11248994A |
To provide an end point limit circuit for the DC motor for the lens which reduces the inertial rebounding of a moving body at an end point and can be improved in durability. This circuit is equipped with a lens motor 11 which drives a zo...
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JPH11247518A |
To prevent reverse running by stopping the drive of a motor when the drive amount of a drive part measured at intervals of a prescribed time is displaced in the contrary direction to the setting direction. A travelling device hanging a p...
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JP2948327B2 |
PURPOSE:To reverse wiper blade motion smoothly by calculating the speed of a wiper blade, and controlling the power supply to the motor on the basis of the data obtained from calculations. CONSTITUTION:The region of wiping operation by a...
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JP2948830B2 |
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JP2949502B2 |
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JP2945826B2 |
PURPOSE: To eliminate sensory physical disorder due to a difference in control system by adopting a normal decelerating speed at the time of stopping a hoisting device from the operating speed below rated frequency or less, and adopting ...
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JP2946803B2 |
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JP2942120B2 |
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JP2599181Y2 |
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JPH11235066A |
To suppress the temperature rise in the motor driving unit of a CD- ROM drive which employs a high speed disc motor at the time of deceleration. A motor driver is composed of a motor, a driving unit 2 for driving the motor, a revolution ...
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JPH11235065A |
To provide a working device which can stop with a very short braking distance, without increase of the size of the device, and without a harmful influence upon a mechanism. A torque limiter unit 2a which applies a predetermined limit to ...
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JPH11235067A |
To provide a method for driving a lift motor for the quick descent operation of a car window. The driving system of the lift motor of a window has a quick descent function. When a motor current exceeds a threshold which is predetermined ...
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JP2940843B2 |
PURPOSE: To realize overcurrent protection of a protective diode by providing each of protective diodes, connected in reverse parallel with switching elements, with a current detecting circuit thereby detecting the circuit of diode throu...
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JP2941443B2 |
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JP2939833B2 |
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JP2939080B2 |
PURPOSE: To surely brake a motor by a method wherein, when the motor is stopped, a circuit is constituted in such a way that only a semiconductor switching element on the side of the negative electrode of a power conversion part is opera...
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JP2941497B2 |
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JP2938595B2 |
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JPH11223758A |
To reduce the fault frequency even in the case of use for detection of operation limit areas of a focus adjustment part, a zoom adjustment part, and an iris adjustment part by providing a detection means which detects passage of a light ...
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JP2934428B1 |
[wrap up] [Task] Provided is an electric switch for a sliding gate capable of preventing the generation of a large impact force by controlling the braking force when the brake is braked. Multiple door rollers will be installed at the low...
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JP2598346Y2 |
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JP2932412B2 |
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JP2598364Y2 |
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JPH11215880A |
To prevent generation of over-voltage or over-current so as to make safely processing possible, by deciding abnormality in a decision means in the case that an output of a voltage detection circuit is a prescribed value or more. A contro...
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JP2930659B2 |
In a two pole universal motor (10) for a circular saw a secondary winding (78, 80) provides dynamic braking. Both run and brake windings (66, 68, 78, 80) are split electrically with respect to the armature (22). All windings are double-e...
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JPH11204003A |
To provide a motor protector capable of showing a stable characteristic via the effective use of the heat of a heating member. This motor protector 1 is constructed so that an open/close switch 12 for opening and closing a current passag...
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JPH11206164A |
To provide a driving control circuit for controlling a motor surely, especially at continuity and break surely. As a breaking means, a standing-position limit switch S1 and a storing-position limit switch S2 are turned on when a mirror a...
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JPH11202941A |
To provide a positioning device which actualizes positioning with relatively high precision and cooperative operation with an industrial robot while having its constitution simplified and can also shorten the manufacture time and reduce ...
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JP2926263B2 |
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JP2925787B2 |
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JPH11197550A |
To protect a converter device while limiting the outputs of induction motors by automatically decreasing the acceleration and deceleration rates of all inverters when the total sum of the respective induction motor outputs exceed the rat...
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JP2922716B2 |
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JP2924347B2 |
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JPH11196550A |
To provide a drive unit with a durable non-contact breaking unit (Hemmung) operated in a simple way. In a drive unit 2, a magnetic fitting mechanism 4 has a boss 11 with a fitting tooth 12 made of magnetic materials 13, 14 for fitting co...
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JPH11194432A |
To prevent image forming speed from being lowered by correcting unbalance of a brake amount caused by the temperature rise of a motor. It is confirmed by a counter 2130 that prescribed time (t) elapses after the motor M is stopped. When ...
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JPH11194825A |
To provide a position controller for an actuator which can properly maintain feedback control when detection data on the current operation position of the actuator has an abnormal value. The position controller which detects the current ...
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JP2921490B2 |
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JPH11191985A |
To detect stoppage of a motor easily while simplifying the circuitry for aging. A motor stop detection circuit 1 comprises a section 3 for supplying current simultaneously to a plurality of motors 2, a section 4 for detecting the differe...
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JP2919492B2 |
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JP2919499B2 |
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JP2919498B2 |
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JPH11184528A |
To attain the miniaturization of a device and the reduction of noises while avoiding the influence of the dispersion of a braking distance or a secular change when performing the stop control of a moving object such as a carriage on a pr...
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JPH11180687A |
To prevent the falling of a load by decelerating an induction motor by offing the operation signal to a hoist crane device, operating a mechanical brake device after a prescribed time when it reaches 0-rotation, and controlling an invert...
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JP2915918B2 |
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JP2597209Y2 |
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JPH11175161A |
To accurately stop a travel base at a target position while tuning off power supply to a motor for moving the travel base at any suitable position by predicting/correcting the stop position or braking distance of the motor. The rotation ...
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