摘要
基于组合建模思想 ,处理非线性系统的建模问题 ,并将子空间预测控制推广到一类非线性状态空间模型描述的系统 ,首先将非线性受控对象进行输入输出线性化处理 ,然后辩识等价的线性模型 ,最终对此线性对象应用高级控制策略 .当实际对象与线性化环节失配时 ,受控过程 +线性化环节不具备理论上的线性关系 ,存在鲁棒性问题 .通过数字仿真 ,验证在有失配的情况下所建议方法的有效性及鲁棒性 .
Based on combined modeling, nonlinear system model can be treated and predictive control of subspace be extended to state\|space model. The nonlinear plant is linearized with Input\|Output linearization, then the equal linear model is identified. Finally, the advanced control strategies are applied. The effectiveness and robustness of the suggested method is demonstrated by simulation example in case of a mismatch between the plant and its linearizing model.
出处
《沈阳化工学院学报》
2000年第1期54-58,共5页
Journal of Shenyang Institute of Chemical Technolgy
关键词
子空间
预测控制
非线性系统
控制系统
closed\|loop subspace identification
\ predictive control
\ combined modeling
input\|output linearization
