| 摘要 |
PURPOSE:To prevent the generation of a shock by a method wherein, when the moving speed on the overshoot side of a control lever exceeds a preset speed, a command signal on the overshoot side for the control lever is shut off by means of an overshoot removing means. CONSTITUTION:When a control lever 1 is caused to effect full stroke to a position on the side A and released at a time t0, the lever 1 is returned to a position on the side B and overshot. Further, the control lever is returned to a position on the side A and damped as overshooting operation is repeated and returned to a neutral position. In this case, a signal level on the side A is lowered to a 0 level during a period between a time t0 and t1. In this case, signals H from detecting means 5 and 7 are outputted to a circuit 11, by means of the signals, a timer 13 is operated, and a signal H is outputted from the circuit 11 to a circuit 15 for a specified time. Meanwhile, a signal from a detecting means 21 on the side B is L and inputted to the circuit 15 after it is inverted by a circuit 29, and a switch 31 is turned OFF. Thus, a signal level on the side B is shut off for a specified time, and an actuator 47 is prevented from being operated by means of a signal level on the side B. |
