| 摘要 |
PURPOSE:To make smooth speed variation of a motor, by providing separately a clock source for generating motor drive pulse train and a clock source for varying speed variation through a command signal. CONSTITUTION:A first reference clock source 10 outputs clocks having frequency corresponding to an acceleration/deceleration function command FC. An actual speed ratio setting circuit 5 outputs an acceleration/deceleration command based on clocks outputted from the first reference clock 10 and a motor speed command VC. An actual speed generating circuit 4 controls clocks fed from a second reference clock source 11 based on the acceleration/deceleration command and provides the controlled clocks to a motor 1. Consequently, speed variation can be made smooth. |
