| 摘要 |
PURPOSE:To control high performance with less number of memories at a high speed by updating a digital stored value corresponding to the rotary position of rotary position detecting means by utilizing the digital value of the means. CONSTITUTION:A speed control system is composed of a brushless motor 1, a rotary sensor 2, a speed detector 3, a compensator 4, and a driver 9, and the rotating speed of the motor 1 is controlled to a predetermined value. The compensator 4 is composed of an arithmetic unit 5, a memory 6, a D/A converter 7, and a rotary position, detector 8, calculates the signal of the detector 3 by a program contained therein, and outputs a control signal to the driver 9. The digital stored value of the memory 6 is updated by the digital rotary error detected by the unit 5, and a control signal is generated on the basis of the value. |
