| 摘要 |
PURPOSE:To accurately guide a working car in straight driving by providing a direction sensor detecting a variation in a self-propelled direction and correcting in a mobile working car. CONSTITUTION:A ultrasonic generator is set at position measuring base points 3 and 4 on periphery in operation division 1 and a direction sensor 5 and an ultrasonic distance measuring equipment 6 is loaded on a mobile working car. A variation of self-propelled direction is detected by a direction sensor 5 and steering is corrected in accordance with the variation then the position is corrected with an ultrasonic wave by outputting of steering action according to the detected result of position with an ultrasonic wave. |
