摘要
本文提出了利用计算机模拟输出实施系统识别的方法,并把这种概念性方法称之为“计算系统识别”。其基本点是,用计算机仿真模型和方法替代通常系统识别研究中的真实系统(或模拟试验系统)和试验方法那一部分,而实现通常系统识别研究的原定目标。联系结构模型化工作,文中报告了一例安全壳结构弯剪梁模型的识别结果。文章还介绍了一个解有约束极小化问题的修正单纯形法,用以完成结构物理参数的寻优任务。
In this paper, a method for implementing the system identification by utilizing the computer simulation output is presented. It is a conceptional method and is called ' Computational System Identification' here. The main point of the method is to use computer simulation models and methods instead of real systems (or test models) and test methods,and to realize the original purpose of the normal system identification studies. Herein, the computer simulation models refer to the complex mathematical models which describe the complex systems arid are computerized. As for the mathematical models to be identified, they are simple and can reflect by and large the behaviour features of the complex systems.Linking the method with the work of structural modelling, the identification results of an engineering example are reported. In addition, to carry out the optimizing task of the physical parameters of structures a modified simplex method to solve the minimization problems with restraints is introduced.
基金
国家自然科学基金
关键词
参数估计
系统识别
结构模型化
parameter estimation, system identification, computational system identification, structural modelling,modified simplex method
