∞, too complex or slow to be used in high speed control applications. In this note we show that by precomputing certain quantities, the control-Lyapunov policy can be evaluated extremely efficiently. We will show that when the number of inputs is on the order of the square-root of the state dimension, the cost of evaluating a control-Lyapunov policy is on the same order as the cost of evaluating a simple linear state feedback policy, and less (in order) than the cost of updating a Kalman filter state estimate. To give an idea of the speeds involved, for a problem with 100 states and 10 inputs, the control-Lyapunov policy can be evaluated in around 67 μs, on a 2 GHz AMD processor; the same processor requires 40 μs to carry out a Kalman filter update.">

Fast Evaluation of Quadratic Control-Lyapunov Policy (original) (raw)

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