一类非线性系统的扩展状态空间预测控制

针对一类具有输出反馈耦合的离散非线性系统，将过程模型表示为扩展状态空间模型，并利用反馈回路非线性函数在参考轨迹附近的局部线性表示，导出一种具有类似离散PI最优调节器结构并具有未来P步设定值前馈控制的新型预测控制器．因其目标函数中考虑了系统状态的变化，所以控制效果要优于仅考虑预测输出误差的情况．仿真结果表明了它的有效性．

Extended State Space Predictive Control for a Class of Nonlinear Systems

An extended state space predictive control method for a class of discrete nonlinear systems is presented by extending the nonlinear model and by using the local linearization of nonlinear function along the reference trajectory. The structure of this method is similar to classic PI optimal controller and possesses a feed-forward control of future P-step setpoints. It considers both the state variations and the output errors in the cost function and thus is superior to methods which only consider output errors. Simulation results show its efficiency.