3Wang Q G,Zou B,Lee T H,et al.Auto-tuning of multivariable PID controllers from decentralized relay feedback[J].Automatica,1997,34(10):18-20.
4Zgorzelski P,Unbehauen H,Niederlinski A.New simple decentralized adaptive multivariable regulator and its application to multivariable plants[C]//Proceedings of the 11th Triennial World Congress of the International Federation of Automatic Control,Elmsford NY:Pergamon Press Inc,1991:381-386.