observability
Sign in to saveObservability is a measure of how well internal states of a system can be inferred from knowledge of its external outputs. In control theory, the observability and controllability of a linear system are mathematical duals.
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Article
16 sectionsContents
- Definition
- Linear time-invariant systems
- Observability matrix
- Related concepts
- Observability index
- Unobservable subspace
- Detectability
- Functional observability
- Linear time-varying systems
- Observability matrix generalization
- Example
- Nonlinear systems
- Static systems and general topological spaces
- See also
- References
- External links
Observability is a measure of how well internal states of a system can be inferred from knowledge of its external outputs. In control theory, the observability and controllability of a linear system are mathematical duals.
The concept of observability was introduced by the Hungarian-American engineer Rudolf E. Kálmán for linear dynamic systems. A dynamical system designed to estimate the state of a system from measurements of the outputs is called a state observer for that system, such as Kalman filters.
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Rudolf E. Kálmán
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