| 摘要 |
<p>PURPOSE:To prolong the service life of a braking means, by switching a traveling motor coupled to a wheel to an electrically braking state by controlling a motor brake switching means based on a stop command. CONSTITUTION:A microcomputer 8, when inputting a stop signal SG2, outputs a motor current switching signal SG3 to rotate the traveling motor 4 in the reverse direction of the traveling direction of a vehicle at this time. Therefore, negative phase braking is applied on the traveling motor 4, and torque opposite to the traveling direction is generated, thereby, traveling speed is lowered. And the microcomputer 8, when a prescribed time t1 elapses after inputting the stop signal SG2, outputs a brake signal SG4 to a drum braking device 6. The drum braking device 6 is operated by the inputting of the signal SG4, then, an unmanned vehicle 1 is stopped.</p> |
