A new Smith predictor and controller for control of processes with long dead time.
Good control of processes with long dead time is often achieved using a Smith predictor configuration. Typically a PI or PID controller is used; however, it is shown in this paper that for some situations improved set point and disturbance responses can be obtained if a PI-PD controller is used. Several methods are possible for selecting the parameters of the PI-PD controller but when the plant transfer function has no zeros, the use of the standard forms provides a simple algebraic approach, and also reveals why difficulties may be encountered if a PID controller is used. Some examples are given to show the value of the approach presented.
Kaya
Ibrahim
I
Engineering Faculty, Electrical and Electronics Dept, Inonu University, 44069, Malatya, Turkey. ikaya@inonu.edu.tr
D003198:Computer Simulation; D005246:Feedback; D016014:Linear Models; D011786:Quality Control; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013269:Stochastic Processes