| 摘要 |
<p>A speed controller which works to control the speed of a robot hand or a moving part of an NC machine tool. The speed controller has speed over-ride means for changing the instruction speed for the moving part at a predetermined rate and acceleration/deceleration means (2X, 2Y) having a time constant inversely proportional to the speed set by the over-ride means. When the speed over-ride quantity is changed, the time constant of the acceleration/deceleration means (2X, 2Y) is changed depending upon the instruction speed, such that a pool quantity in the instruction pulse quantity becomes constant during the acceleration or deceleration. Therefore, the moving part is controlled to move at a predetermined speed without changing the locus at the corners.</p> |
