Abstract
In this paper, a new PID parameter tuning method is proposed whose PID parameters are adjusted based on a control performance assessment (CPA) index. Although a majority of studies about the CPA have been focused on the derivation of the CPA index, the control parameter tuning method has been hardly studied which is based on the CPA. On the other hand, the conventional adaptive controllers are tuned based on the variance of control errors and/or modeling errors. Therefore, the conventional adaptive controllers can not be tuned in the steady state which the control errors and/or the modeling errors do not exist so much, even if the CPA index becomes worse. However, the proposed method can be tuned in such a case because the controller is tuned based on the CPA index which is evaluated on the steady state. Moreover, the proposed PID parameter tuning method can deal with a variety of systems, since the CPA does not depend on the degree of the controlled object. Finally, the effectiveness of the proposed method is numerically evaluated on some simulation examples.
