| 摘要 |
PURPOSE:To make the control state stable by operating a steering signal from a steering controller and a track change signal from a track change circuit and running an unattended truck with a state deviated from a normal track so as to prevent damages to a specific road face. CONSTITUTION:If pickup coils 2a, 2b are deviated from an inducing wire, a voltage induced respectively onto the coil is different, amplified by AC amplifiers 3a, 3b and detected voltages e1, e2 are outputted. The voltages e1, e2 are inputted to a comparator C1, from which a deviation voltage e3 is outputted. On the other hand, a sinusoidal wave voltage e4 of an ultralow frequency is outputted from a sinusoidal wave oscillator 4, inputted to a comparator C2 together with the voltage e3, a steering voltage e5 is outputted as the steering signal and the unattended truck is subjected to steering. Thus, sisce the orbit of the wheels is not concentrated on a particular part only but spread over a width, the damage to the running road face are prevented. |
