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- W3092200824 abstract "The linear-quadratic regulator (LQR) is an efficient control method for linear and linearized systems. Typically, LQR is implemented in minimal coordinates (also called generalized or joint coordinates). However, other coordinates are possible and recent research suggests that there may be numerical and control-theoretic advantages when using higher-dimensional non-minimal state parameterizations for dynamical systems. One such parameterization is maximal coordinates, in which each link in a multi-body system is parameterized by its full six degrees of freedom and joints between links are modeled with algebraic constraints. Such constraints can also represent closed kinematic loops or contact with the environment. This paper investigates the difference between minimal- and maximal-coordinate LQR control laws. A case study of applying LQR to a simple pendulum and simulations comparing the basins of attraction and tracking performance of minimal- and maximal-coordinate LQR controllers suggest that maximal-coordinate LQR achieves greater robustness and improved tracking performance compared to minimal-coordinate LQR when applied to nonlinear systems." @default.
- W3092200824 created "2020-10-15" @default.
- W3092200824 creator A5003687365 @default.
- W3092200824 creator A5041463737 @default.
- W3092200824 date "2020-10-12" @default.
- W3092200824 modified "2023-09-27" @default.
- W3092200824 title "Linear-Quadratic Optimal Control in Maximal Coordinates." @default.
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