| 摘要 |
PURPOSE:To make it possible to control the traveling direction and speed of a carrier car only by one electromagnetic induction loop line by forming a means for extracting a traveling control signal to control the traveling of the carrier car and a means for detecting the traveling direction from a pair of induction coils to control the traveling direction. CONSTITUTION:Induced electromotive force generated in a traveling control signal detecting induction coil 7 is detected by a detector 10 and converted into a digital value by an A/D converter 12 and the digital value is inputted to a control circuit 13. The control circuit 13 outputs control values to motor driving amplifiers 14, 15 on the basis of said digital value, so that current flowing from a power supply 18 for the carrier car 18 is controlled by switches 16, 17 and driving motor 19, 20 are driven. The difference between the induced electromotive force generated in traveling direction detecting induction coils 5, 6 is detected by a differential amplifier 11 through detectors 8, 9, control values are outputted from the control circuit 13 to the motor driving amplifiers 14, 15 and the rotational frequency of the right and left wheel driving motors 20, 19 is controlled so that the electromotive force values of the induction coils 5, 6 are balanced to control the traveling direction of the carrier car.
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