| 摘要 |
PURPOSE:To stop an actuator automatically at a target position by controlling operation of the actuator on the basis of the state of a sensor which is at the target position. CONSTITUTION:A controlling device C reads on/off state of light sensors SR, SN, S1, S2, S3, and at the same time, reads the state of operation of switches SWR, SWN, SW1, SW2, SW3. When any one of switches is depressed, a light sensor at corresponding is judged whether it is on state or off state. When the light sensor is on state, an electric motor M (actuator) is rotated normally until the light sensor at the position corresponding to the depressed switch is made off and stopped. On the other hand, in the case where the light sensor is off state, the motor is rotated reversely until the light sensor at the position corresponding to the depressed switch becomes on state and then stopped.
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