非线性系统的广义线性化预测控制

提出一种非线性系统预测控制的分层设计方法。首先采用广义线性化状态反馈得到具有指定动态的线性化系统,然后采用基于状态方程的预测控制算法,以获得良好的跟踪性和鲁棒性。最后以仿真例子证实了这种控制方案的有效性。

Predictive Control for Nonlinear Systems Based on Extended Linearization

In predictive control for nonlinear systems, on-line nonlinear prog-ramming is often reguired which is not suitable for real-time control. In thispaper, a multi-level design scheme of perdictive control for nonlinear systemsis presented. Firstly, a nonlinear state feedback based on extended lineariza-tion is used to obtain an approximate increamental linearized system. Thenthe predictive control is adopted based on the linearized state-space model toachieve good tracking performance and robustness. The proposed methodreduces the much computation and is thus suitable for real-time control. Asimulation example is also given to demonstrate the good robustness of thenew method.