| 摘要 |
PURPOSE:To eliminate the inconvenience of manual adjustment of offset by inputting proviously a zero driving signal to an amplifying means to store an output as the offset and by correcting the output during the servo-controlling operation. CONSTITUTION:A microprocessor 11 outputs digital value corresponding to the zero driving amount to DA converter 13. A switching signal s(11) switches a switching circuit 17 to input a motor driving signal s(14) to an AD converter 18. The output from the AD converter 18 is stored by microprocessore 11 in a memory 12 as the read offset amount. When the automatic offset recognising action is complated, switching circuit 17 is switched by a signal s(11) to shift the operation to the normal control mode and a location/speed signal s(16) is inputted to an AD converter 18, the microprocessor reads the output and performs the prescribed calculation to determine the driving amount. The offset amount is read by the memory 12 and subtracted from said driving amount to output to DA converter 13. |
