Safe Control of Arbitrary Nonlinear Systems using Dynamic Extension
CoRR(2021)
摘要
Safe control for control-affine systems has been extensively studied. However, due to the complexity of system dynamics, it is challenging and time-consuming to apply these methods directly to non-control-affine systems, which cover a large group of dynamic systems, such as UAVs and systems with data-driven Neural Network Dynamic Models (NNDMs). Although all dynamic systems can be written in control-affine forms through dynamic extension, it remains unclear how to optimally design a computationally efficient algorithm to safely control the extended system. This paper addresses this challenge by proposing an optimal approach to synthesize safe control for the extended system under the framework of energy-function-based safe control. The proposed method first extends the energy function and then performs hyperparameter optimization to maximize performance while guaranteeing safety. It has been theoretically proved that our method guarantees safety (forward invariance of the safe set) and performance (bounded tracking error and smoother trajectories). It has been numerically validated that the proposed method is computationally efficient for non-control-affine systems.
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关键词
arbitrary nonlinear systems,nonlinear systems,dynamic,control
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