| 摘要 |
PURPOSE:To attain the control of a motor with optimum setting pattern in response to load fluctuation by correcting pattern data of periodical operation control of the motor based on a positioning deviation data at least at one preceding state of repetitive operation. CONSTITUTION:Deviation data outputted from a subtractor 2 is stored in an RAM10 for one period's share, outputted to a constant multiplier 11, where it is corrected. The corrected deviation data is added to a set pattern read from a ROM1 to correct the setting pattern. The corrected set pattern is inputted to the subtractor 2 and then the motor 6 is controlled at present period via a D/A converter 4 and a drive circuit 5. Supporting that the load of the motor 6 is large, the number of revolutions is decreased and the count value of the pulse counter 9 is decreased. Then the deviation data from the subtractor 2 is increased and stored in the RAM10. The data of the ROM10 is read at the end of the period and corrected by a constant multiplier 11, then added to a set pattern read from the RAM1 by an adder 12 and the number of revolutions is increased. |
