CDS 110b: State Estimation

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This lecture presents an introduction to state estimation and observers. Beginning with a definition of observability, we provide conditions under which a linear system is observable and show how to construct an observer in the case where there is no noise. We then prove the separation principle, which shows how to combine state regulation with state estimation.

Lecture Outline

  1. Observability
    • Definition of observability (full nonlinear system)
    • Observability conditions for linear processes: intuition + proof
  2. State Estimation
    • Luenberger observer
    • Example: ducted fan
  3. Separation Principle
    • Proof of the separation principle
    • Transfer function representation
    • Example: ducted fan

Lecture Materials

References and Further Reading

  • Friedland, Chapters 7 and 8

Frequently Asked Questions