Interval state estimation for discrete time systems with actuator saturation
Abstract
It is very difficult to apply traditional observer design and analysis methods directly to the interval observer. What is worse, the existing design and analysis tools for interval observers are very limited, and most of them are targeted at linear systems. Nevertheless, as most of actual control systems are non-linear in nature, there is an urgent need to develop an interval observer design theory targeted to non-linear systems. In this paper, the author puts forward an interval observer design method for discrete systems subject to actuator saturation so as to estimate the state interval of the systems even if there is an unknown non-linear function.
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