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  2. Control theory - Wikipedia

    en.wikipedia.org/wiki/Control_theory

    In contrast to the frequency domain analysis of the classical control theory, modern control theory utilizes the time-domain state space representation, [citation needed] a mathematical model of a physical system as a set of input, output and state variables related by first-order differential equations. To abstract from the number of inputs ...

  3. List of mathematical theories - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_theories

    Almgren–Pitts min-max theory; Approximation theory; Arakelov theory; Asymptotic theory; Automata theory; Bass–Serre theory; Bifurcation theory; Braid theory

  4. State-space representation - Wikipedia

    en.wikipedia.org/wiki/State-space_representation

    Control engineering; Control theory; State observer; Observability; Controllability; Discretization of state-space models; Phase space for information about phase state (like state space) in physics and mathematics. State space for information about state space with discrete states in computer science. Kalman filter for a statistical application.

  5. Optimal control - Wikipedia

    en.wikipedia.org/wiki/Optimal_control

    Optimal control problem benchmark (Luus) with an integral objective, inequality, and differential constraint. Optimal control theory is a branch of control theory that deals with finding a control for a dynamical system over a period of time such that an objective function is optimized. [1]

  6. Hamiltonian (control theory) - Wikipedia

    en.wikipedia.org/wiki/Hamiltonian_(control_theory)

    Inspired by—but distinct from—the Hamiltonian of classical mechanics, the Hamiltonian of optimal control theory was developed by Lev Pontryagin as part of his maximum principle. [2] Pontryagin proved that a necessary condition for solving the optimal control problem is that the control should be chosen so as to optimize the Hamiltonian. [3]

  7. Chaos theory - Wikipedia

    en.wikipedia.org/wiki/Chaos_theory

    Chaos theory (or chaology [1]) is an interdisciplinary area of scientific study and branch of mathematics. It focuses on underlying patterns and deterministic laws of dynamical systems that are highly sensitive to initial conditions .

  8. Linear system - Wikipedia

    en.wikipedia.org/wiki/Linear_system

    In systems theory, a linear system is a mathematical model of a system based on the use of a linear operator.Linear systems typically exhibit features and properties that are much simpler than the nonlinear case.

  9. Causal system - Wikipedia

    en.wikipedia.org/wiki/Causal_system

    In control theory, a causal system (also known as a physical or nonanticipative system) is a system where the output depends on past and current inputs but not future inputs—i.e., the output () depends only on the input () for values of .