| 摘要 |
PURPOSE:To reduce the speed with high efficiency with use of a drive source of a comparatively small capacity by detecting the present speed at a reference position and comparing the detected speed with the estimated speed at the reference position to change and correct the servo gain. CONSTITUTION:A position comparing part 10 detects that an object 1 traveling at a fixed speed has reached a point P1, and a servo motor 4 is damped to drive the object 1 to a desired position P. Then a speed comparing part 13 detects that the object 1 has reached a fixed reference speed V0. Then a position P2 is detected by a position detector 9. If the point P2 where the traveling object 1 under reduction of speed reaches the speed V0 is out of a prescribed position P3, a gain correction signal is produced at a gain producing part 14 to change a gain pattern in consideration of a distance P3-P2. The output of the part 14 is supplied to a gain control part 6. Thus the gain of an amplifier 7 is changed to increase or reduce the efficiency of speed reduction. |
