基于干扰估计的输出反馈离散滑模控制

Jorge E. Ruiz-Duarte, A. Loukianov
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引用次数: 1

摘要

本文提出了一种仅测量离散系统输出来实现滑模控制鲁棒性的新方法。所提出的技术是基于任意离散时间函数的逼近,通过使用其前面的各种步骤。该方法将系统扰动近似为一个动态系统,从而对对象模型进行了扩展。在扩展模型的基础上,设计了状态观测器来估计系统状态和扰动。利用观测器状态,设计了离散滑模控制器,实现了扰动系统的鲁棒稳定。仿真结果表明了该方法的有效性。
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Output-Feedback Discrete-Time Sliding Mode Control via Disturbance Estimation
In this paper, a novel technique to achieve robustness in sliding mode control for discrete-time systems by measuring only its output is presented. The proposed technique is based on the approximation of an arbitrary discrete-time function by using various of its previous steps. Using this approach, the system disturbance is approximated by a dynamical system and as result, the plant model is extended. Based on the extended model, a state observer is designed to estimate both the system state and the disturbance. Using the observer state, a discrete-time sliding mode controller is then designed to robustly stabilize the perturbed system. The simulation results show the effectiveness of the proposed technique.
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