控制系統(tǒng)的參數(shù)優(yōu)化問題的目的是使目標(biāo)函數(shù)能比較確切地反映系統(tǒng)的特性，而且又能使計(jì)算簡單。利用MATLAB 的優(yōu)化控制工具箱，選取基于“ITSE”(integral of time weighted squared errors)準(zhǔn)則的目標(biāo)函數(shù)，從仿真實(shí)驗(yàn)可以看出“ITSE”準(zhǔn)則確實(shí)存在局限性。最后基于最優(yōu)控制理論提出一種適用于控制系統(tǒng)參數(shù)尋優(yōu)的新的目標(biāo)函數(shù)，并結(jié)合仿真結(jié)果說明了所給出的新的目標(biāo)函數(shù)使得控制系統(tǒng)的時域性能指標(biāo)（超調(diào)量和調(diào)節(jié)時間）都得到很大的改善。
關(guān)鍵詞：ITSE；目標(biāo)函數(shù)；參數(shù)優(yōu)化
Abstract：The parameter optimization of control systems always refers to different objective functions. The selected objective function should exactly reflect the characteristic of the control system while making the computation easy. In this paper we use optimization toolbox in Matlab confirm that "ITSE" principle has some problems while using it as our objective function. By the means of analysis based on optimization control theory, we propose a new objective function, which improve the time domain performance evaluation (such as overshootand adjustment time).
Key Words：ITSE; Objective function; Parameter optimization