340 リファレンスガバナを利用した拘束システムの制御(アドバンスト制御理論応用III)(OS アドバンスト制御理論応用)

概要

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Pointwise-in-time constraints, which appear as actuator bounds on control variables and physical limits on state variables, are inherent in almost all practical control systems. Violation of these constraints makes system performance degraded drastically, and in the worst case leads to instability. This paper considers reference governor that manages the inputs to the control system for constraint fulfillment by off-line. The main idea is to transit the state variables to a certain invariant subset in finite horizon. This invariant subset is so-called maximal output admissible set to which restricting the state dynamics is equivalent to fulfilling constraints for the primary control system. The proposed method also allows improving performace of systems with state and control constraints. Constraint fulfillment and improvement of set-point tracking performance are illustrated by example.
2001-04-20