Most plants can be efficiently controlled by using simple low cost controllers. Many variations of the classical PID regulator have been developed in order to obtain high speed of response, steady state precision, disturbance rejection and robustness with respect to parametric variations and unmodeled dynamics. In this paper two classes of non linear plants with input saturation are considered. Class I deals with first order plus time delay processes, class II deals with plants modelled by a process with a dominant pair of complex conjugate poles. A variable structure standard regulator (VSC) for class I plants and a robust oscillating controller (ROC) is for class II plants are proposed. To improve the overall performance a ROC-PID controller is also considered. Such controllers can be easily implemented by using low cost microprocessors and their industrial use seems to be very attractive. A complete set of simulation results is reported.

Low cost robust nonlinear controllers

BALESTRINO, ALDO;LANDI, ALBERTO
1993

Abstract

Most plants can be efficiently controlled by using simple low cost controllers. Many variations of the classical PID regulator have been developed in order to obtain high speed of response, steady state precision, disturbance rejection and robustness with respect to parametric variations and unmodeled dynamics. In this paper two classes of non linear plants with input saturation are considered. Class I deals with first order plus time delay processes, class II deals with plants modelled by a process with a dominant pair of complex conjugate poles. A variable structure standard regulator (VSC) for class I plants and a robust oscillating controller (ROC) is for class II plants are proposed. To improve the overall performance a ROC-PID controller is also considered. Such controllers can be easily implemented by using low cost microprocessors and their industrial use seems to be very attractive. A complete set of simulation results is reported.
Balestrino, Aldo; Landi, Alberto
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/256859
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 2
social impact