| 摘要 |
PURPOSE:To control the travelling of a car effictively by arranging plural detecting coils to detect the vertical component of a magnetic field in the width direction of the travelling car, discriminating a detecting coil located on a guide line and controlling the operational direction in accordance with the set position of the detecting oil. CONSTITUTION:Detecting signal levels from the detecting coils 11a-11g to detect the vertical component of a magnetic field are sent to a comparator 21 respectively. The comparator 21 compares these detecting signal levels with a reference level, and outputs either a signal ''1'' or ''0'' to a position discriminator 22 when the signal levels are either more than the reference level or less than the reference level respectively. The discriminator 22 detects the shifted distance of the travelling car from the guid line by the signal status from the comprator 21 and sends the detected result to a steering angle adjustor 23. Consequently, the adjustor 23 decides the steering angle so as to compensate the shifted distance, the output signal of the discriminator 22, and drives a steering motor 25 positively or reversely through a motor controlling circuit 24. |
