| 摘要 |
PURPOSE:To perform optimum numerical control by adding a position deviation reader to a digital servo system numerical controller, and comparing a command pulse with a feedback pulse on the basis of the read output of the reader and carrying out speed control so that working force is constant. CONSTITUTION:Pulses from a command generation part 1 are integrated by the command counter 20 of a comparator 11 and feedback pulses from a position detector 16 are also integrated by the counter 21 similarly. At the timing of a timing generation part 24, the current feedback counter value is subtracted from the current command counter value at a part 22 and their difference is supplied to an output latch 23. Its output is synchronized with a D/A converter 12 by the timing generation part 24 and amplified to drive a motor 14, holding load torque constant. |
