Decentralized PI control of a rolls-royce jet engine

A decentralized PI controller tuning method is presented and is applied to a two input two output model of a Rolls-Royce jet engine. Using a zero assignment technique, the process is firstly decoupled through a stable decoupler matrix to attain the benefits of decentralized control techniques. Next, a model reduction method is introduced to reduce the resulting high order diagonal matrix to a diagonal matrix which has first order plus dead time elements. Finally, a single input single output PI controller tuning method which has been optimally obtained for first order plus dead time processes is used to determine optimal PI controllers for each loop