| 摘要 |
PURPOSE:To simplify an extracting means for features by finding a proportional gain and a storage gain, by fuzzy operation of the product of a proportional gain and the variation of the deviation input value of a PI controller, an added value of a product of a storage gain and the deviation input value of the PI controller, and the deviation input value of the PI controller. CONSTITUTION:An induction motor 11 supplies a rotational speed command value omegar' and a measured rotational speed value omegar detected by a rotational speed detector 13 to a deviation calculator 14, and its deviation output is obtained. The output of this deviation calculator 14 is supplied to a PI controller 15 and a fuzzy turning system 16 respectively. Receiving the speed deviation as an input, the PI controller 15 determines a torque command value Te using a discretized PI operation expression. And its variation DELTATe is put into the fuzzy tuning system 16. And automatic gain adjustment is performed by inferring the value of the ratio Kp/Ki, a ratio of a proportional gain Kp to a storage gain Ki, from a position where the variation DELTATe of the torque command value becomes zero, and by tuning the gain and the time constant of the PI controller using a means which tunes the gains Kp and Ki. |
