系统模型及控制器的FRIT同步优化分析  

Simultaneous optimization of a model and its controller based on FRIT

作　　者：薛鹏[1] 薛凤娟 

机构地区：[1]河南工程学院电气信息工程学院,河南郑州451191 [2]必维申美商品检测(上海)有限公司,上海201108

出　　处：《河南工程学院学报（自然科学版）》2014年第1期76-80,共5页Journal of Henan University of Engineering：Natural Science Edition

基　　金：河南省教育厅科学技术研究重点项目(14B120006);河南工程学院博士科研基金项目(D201213)

摘　　要：针对反馈系统被控对象精确辨识和控制器优化相互依赖的问题,提出了二者同步优化的FRIT设计方法.采用参数化方法将对象辨识和控制器优化转换为基于共同参数的优化问题.利用FRIT方法通过一组实验数据就可实现关键参数的优化配置.为了解决评价函数最优解搜索过程中的非线性问题,引入CMA-ES方法来简化复杂的计算过程,并以此保证算法在仿真计算中的有效性.算例验证了设计方法的可行性和有效性,为反馈控制系统中对象的精确建模和控制器的优化同步提供了思路.Aiming at the interdependence issue of accurate modeling and controller optimization in feedback control system design, fictitious reference iterative tuning （FRIT） was presented to attainment of a model and its controller with parameterization simultaneously. The issue was transformed into a parameter optimization by using parameterization to modeling and controller. Optimizing design was obtained on 1 - group empirical data via FRIT. To deal with nonlinear functions in searching globally optimal solution, evolution strategy with covariance matrix adaptation （ CMA - ES） was also adopted to simplify calculation. It was also to be used to assure the a- vailability of the probability simulation results. Several examples illustrate the feasibility of the presented method. The presented method introduces an improved approach of feedback system design to simultaneous attainment of model and its controller.

关 键 词：模型辨识 优化设计 参数化 

分 类 号：TS111[轻工技术与工程—纺织材料与纺织品设计]