Write short notes on Controllability and Observability.
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Controllability is an important property of a control system, and the controllability property plays acrucial role in many control problems, such as stabilization of unstable systems by feedback, or optimal control.
Observation, as the name implies, is a way of collecting data through observing. Observation data collection method is classified as a participatory study, because the researcher has to immerse herself in the setting where her respondents are, while taking notes and/or recording.
Observation as a data collection method can be structured or unstructured. In structured or systematic observation, data collection is conducted using specific variables and according to a pre-defined schedule. Unstructured observation, on the other hand, is conducted in an open and free manner in a sense that there would be no pre-determined variables
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Answer:
- Controllability is the ability of a system to reach a fixed state from a finite state.
- Observability is the ability for understanding the internal states of a system based on the output of the system.
Explanation:
- Controllability is important for controlling a system. Controllability is used to control problem and to stabilize any unstable situation. Controllability in a system can works in various forms like-
- State controllability
- Output controllability
- Behavioral controllability etc.
- Observability decides how fast the root of a problem can be recognized. Observability monitors modern system more effectively. Observability focuses on four main types of data-
- logs
- metrics
- traces
- dependencies.
- Controllability and Observability are considered as dual aspects of a problem.
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