Equivalent value filters in disturbance estimation and state observation
In this paper, the implementation of the equivalent value operators by first order, high bandwidth, low pass filters is considered. An ultimate boundedness proof for the estimation/observation errors when the filters are used sequentially in the equivalent control based disturbance estimator and state observer designs is provided. A rule of thumb for the selection of filter time constants is also given. Initial results on this selection suggest the creation of a multiple time scale behavior since each of the filter time constants is to be as small as possible.
KeywordsFinite Time Variable Structure Control Equivalent Control Ultimate Boundedness Variable Structure System
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