Steering direction controller for auto propelled vehicle - has reversible motor powered from battery via bridge switching system

摘要

The automatically propelled vehicle is guided by a wire buried in the ground and steering is a function of an error signal sensed by detectors. Unbalance in a two battery system is overcome by logic controlled bridge switching circuit. A reversible motor (4) which controls direction of the steering is powered from two batteries in series (+v, -v) when commanded by signals from error sensors which control clock circuits (10). Transistors (11-14) in a bridge circuit are subjected in pairs to clockwise or anticlockwise steering pulses from the clock circuits. This completes an electrical circuit via the batteries to drive the motor.