Motor direction control device for electromotive vehicles

Details Motor direction control device for electromotive vehicles Motor direction control device for electromotive vehicles

1997-12-31

1999-09-28

Ip, Paul

Electricity: motive power systems

Constant motor current, load and/or torque control

318430, 318489, 318439, 180 193, B62D 504, H02K 2300

Patent

active

059594217

ABSTRACT:
A motor direction control device id used for electromotive vehicles which has an electric motor adapted to cause the vehicles to move forwards and backwards. The motor direction control device includes a direction control level shiftable from a neutral position into forward or reverse position. Operatively connected to the direction lever is an elongated pliable strip which is slidable along a predefined moving way by the shifting operation of the direction control lever and carries a permanent magnet. First and second magnetolectric sensors are arranged in a spaced-apart relationship with each other along the moving way of the elongated strip, each of the magnetoelectric sensors capable of generating, when left deactivated, a position signal of first logic level and activatable by the permanent magnet to produce a position signal of second logic level as the direction control lever is shifted into the forward or reverse position. Responsive to the position signals of first and second logic levels, a microprocessor is adapted to control the direction of rotation of the electric motor. A Hall generator may be utilized as the magnetoelectric sensors.

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patent: 5125468 (1992-06-01), Coker
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patent: 5636137 (1997-06-01), Hazelden
patent: 5652487 (1997-07-01), Nishino et al.
patent: 5657828 (1997-08-01), Nagamachi

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