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pure quadratic equation - translation to russian
математика
квадратичная иррациональность
общая лексика
квадратичная иррациональность
Definition
Wikipedia
The theory of optimal control is concerned with operating a dynamic system at minimum cost. The case where the system dynamics are described by a set of linear differential equations and the cost is described by a quadratic function is called the LQ problem. One of the main results in the theory is that the solution is provided by the linear–quadratic regulator (LQR), a feedback controller whose equations are given below.
The LQR can be run repeatedly with a receding horizon; this is a form of model predictive control.
The LQR is also an important part of the solution to the LQG (linear–quadratic–Gaussian) problem. Like the LQR problem itself, the LQG problem is one of the most fundamental problems in control theory.
