Structure Identification in Variable Structure Systems
by Means of Qualitative Simulation
Abstract
This paper shows the application of Fuzzy Inductive Reasoning (FIR), a
qualitative simulation methodology, to structure identification in Variable
Structure Systems (VSS). This method is capable to decide by observations of
system inputs and outputs alone, which mode the VSS is in at any point in time,
and when structural transitions take place. Detection and discrimination are
carried out by forecasting the future behavior of all possible structures in
parallel. This methodology opens up the possibility of combining a qualitative
supervision and control system on-line with a quantitative VSS. Two examples,
a simple two-water-tank system and an electric circuit, are included to
demonstrate the validity of the chosen approach.
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Last modified: January 19, 2006 -- © François Cellier