Learning goals

Knowledge (remember and understand)

  • Give a definition of an equilibrium of a hybrid automaton.
  • Give definitions of (uniform) stability, (global uniform) asymptotic stability, and (global uniform) exponential stability of a hybrid automaton.
  • Does stability of the continuous dynamics at each individual discrete state (mode, location) guarantee stability of the full hybrid automaton?
  • Does instability of the continuous dynamics at some of the discrete state (mode, location) prevent the full hybrid automaton from being stable?
  • Give conditions of (uniform) asymptotic stability of a hybrid automaton in terms of Lyapunov-like functions.
  • Explain the essence and the pros and the cons of a common Lyapunov function (CLF) approach to stability analysis.
  • Explain the common quadratic Lyapunov function (CQLF) approach to stability analysis.
  • Restricting to a hybrid automaton with linear dynamics in each mode, formulate the problem of finding a CQLF as a linear matrix inequality.
  • Explain the S-procedure and show how it can be used to formulate the problem of a piecewise quadratic Lyapunov function?

Skills (use the knowledge to solve a problem)

  • Analyze stability of a switched linear system under arbitrary switching by formulating and solving (using a computer) the relevant linear matrix inequalities (LMI).
  • Analyze stability of a switched linear system using a piecewise quadratic Lyapunov function.
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