Feedback cooperative control for releasing input saturation

L. Giovanini, H. Xia

Research output: Contribution to conferencePaper

Abstract

In this paper output unreachability under input saturation phenomenon is studied: under a large disturbance or set-point change, the process output may never reach the set-point even when the manipulated variable has been driven to saturation. The process output can only be brought back to the set-point by activating an auxiliary manipulated variable. A new feedback cooperative control strategy capable of solving such a problem is proposed. In this scheme, the primary manipulated variable is used to handle the transient response while the auxiliary manipulated variable is used to keep the primary manipulated variable away from the saturation. These two manipulated variables are coordinated through a user-defined non-linear function. This function decides when and how the control structure changes. Its parameters determine the interaction between both inputs and the steady state value of each manipulated variable. The effectiveness of the proposed scheme is illustrated in a simulation example.

Original languageEnglish
Pages679-684
Number of pages6
DOIs
Publication statusPublished - Sep 2004
Event2004 IEEE International Conference on Control Applications - , United Kingdom
Duration: 2 Sep 20044 Sep 2004

Conference

Conference2004 IEEE International Conference on Control Applications
CountryUnited Kingdom
Period2/09/044/09/04

Keywords

  • feedback
  • cooperative control
  • releasing input
  • saturation
  • actuators
  • transient response
  • steady-state
  • process control
  • predictive models
  • output feedback
  • optimal control
  • MIMO
  • industrial control
  • control systems

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