| 摘要 |
PURPOSE:To enable to accurately set the speed of a slave side motor by adding a correcting constant value to the value multiplied by the speed ratio of the motor to a speed detection signal. CONSTITUTION:A microcomputer 13 has a frequency-to-digital value converter 14 which converts as an input interface the output frequency signal of a tachometer generator 8 to a digital value. Then, the microcomputer 13 stores the speed setting arithmetic program in an ROM16 and the calculated data in an RAM17, and performs a speed setting calculation by a CPU18. The constant correction value is added to the value multiplied by the speed ratio of the slave side motor to the speed detection signal by this calculation, thereby obtaining the set speed of the motor. In this manner, it can readily set accurately the speed of the motor. |
