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  2. Observability - Wikipedia

    en.wikipedia.org/wiki/Observability

    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.

  3. Controllability - Wikipedia

    en.wikipedia.org/wiki/Controllability

    Controllability and observability are dual aspects of the same problem. Roughly, the concept of controllability denotes the ability to move a system around in its entire configuration space using only certain admissible manipulations. The exact definition varies slightly within the framework or the type of models applied.

  4. State-space representation - Wikipedia

    en.wikipedia.org/wiki/State-space_representation

    The observability and controllability of a system are mathematical duals (i.e., as controllability provides that an input is available that brings any initial state to any desired final state, observability provides that knowing an output trajectory provides enough information to predict the initial state of the system).

  5. Control theory - Wikipedia

    en.wikipedia.org/wiki/Control_theory

    Controllability and observability are main issues in the analysis of a system before deciding the best control strategy to be applied, or whether it is even possible to control or stabilize the system. Controllability is related to the possibility of forcing the system into a particular state by using an appropriate control signal.

  6. Controllability Gramian - Wikipedia

    en.wikipedia.org/wiki/Controllability_Gramian

    In control theory, we may need to find out whether or not a system such as ˙ = + () = + is controllable, where , , and are, respectively, , , and matrices for a system with inputs, state variables and outputs.

  7. Kalman decomposition - Wikipedia

    en.wikipedia.org/wiki/Kalman_decomposition

    In control theory, a Kalman decomposition provides a mathematical means to convert a representation of any linear time-invariant (LTI) control system to a form in which the system can be decomposed into a standard form which makes clear the observable and controllable components of the system.

  8. Nursing ethics - Wikipedia

    en.wikipedia.org/wiki/Nursing_ethics

    Although much of nursing ethics can appear similar to medical ethics, there are some factors that differentiate it. Breier-Mackie [5] suggests that nurses' focus on care and nurture, rather than cure of illness, results in a distinctive ethics. Furthermore, nursing ethics emphasizes the ethics of everyday practice rather than moral dilemmas. [2]

  9. Network controllability - Wikipedia

    en.wikipedia.org/wiki/Network_controllability

    The resulting digraph is called the cacti (see Fig.d). According to the structural controllability theorem, [5] since there is a cacti structure spanning the controlled network (see Fig.e), the system is controllable. The cacti structure (Fig.d) underlying the controlled network (Fig.e) is the "skeleton" for maintaining controllability.

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