| 摘要 |
PURPOSE:To enable to control the acceleration or deceleration of a motor at the maximum limit in response to the magnitude of a load by storing speed information in response to position information at the accelerating time, and sequentially reading out the corresponding speed information on the basis of the present position information at the deceleration time to control to decelerate the motor. CONSTITUTION:A calculator 5 calculates the remaining distance DELTAX from the present position XR to the target position X0. On the other hand, an acceleration/deceleration discriminator 7 outputs a write signal W in case of DELTAX>=(X0- Xs)/2 (Xs: starting position), and outputs a read-out code R to a switching circuit 11 in case of DELTAX<=(X0-Xs)/2. When a write signal W is outputted, the relationship between the motor speed V and the position is sequentially written in a memory 9 as the speed pattern. When the read-out signal R is outputted, the speed data is sequentially read out to control the deceleration on the basis of the position signal by the speed pattern. |
