Abstract
The infinite horizon optimal tracking problem is solved for a deterministic, control-affine, unknown nonlinear dynamical system. A deep neural network (DNN) is updated in real-time to approximate the unknown nonlinear system dynamics. The developed framework uses a multi-timescale concurrent learning-based weight update policy, with which the output-layer DNN weights are updated in real-time, but the internal DNN features are updated discretely and at a slower timescale (i.e., with batch-like updates). The design of the output-layer weight update policy is motivated by a Lyapunov-based analysis, and the inner features are updated according to existing DNN optimization algorithms. Simulation results demonstrate the efficacy of the developed technique and compare its performance to existing techniques.
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More From: IEEE Transactions on Automatic Control
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