| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor position estimation controller in which inverting operation can be carried out smoothly. SOLUTION: The motor controller employing a d-q coordinate system is provided with a table 22 prestoring the correlation of the load capacity and the load torque. Depending on a detected load, a corresponding load torque is read out from the table and the acceleration is estimated according to a predetermined operational formula. Since the position between specified angles is estimated, positional accuracy can be enhanced through a relatively simple arrangement. |
