| 摘要 |
PURPOSE:To enable to always preferably control to drive a motor irrespective of the magnitude of the rotating speed by employing calculated result stored instead of calculating a vector as the calculated result when the rotating speed of the motor is in the preset speed range. CONSTITUTION:Calculating data storing means 105 stores in advance vector calculated result or data corresponding to the calculated result of the variation component of the vector calculating steps. Rotating speed discriminating means 104 discriminates whether the rotating speed of the motor falls in a preset speed range or not. Calculating mode switching means 106 supplies the output of vector control calculating means 100 when the rotating speed is low and the calculated data stored in the means 105 when high to current control means 101. |
