| 摘要 |
PURPOSE:To always maintain the prescribed speed control characteristic by deciding the value of an adjustable gain in an adjustable mechanism in response to the operating state of a motor. CONSTITUTION:The gain GF of an adjustable gain element 11A is multiplied by a speed command NREF and the gain GB of an adjustable gain element 11B is multiplied by a motor speed N in an adjustable gain mechanism 1. The prod uct of the obtained two is added by an adder 11C to become a current command IREF to a current control minor loop 12. An adaptive logic unit 13 inputs the command IREF and the motor speed N, and calculates the values of the gain GF, GB on the basic of the adaptive logic. Thus, even if parameter varies during the operation or a disturbance arises, the prescribed speed control characteristic can be obtained. |
