可控度/有限元法在热压电仿生热鲁棒结构致动器放置优化中的应用  

Actuator Placement Optimization in Piezothermoelastic Biotic Thermal Robust Structure Using DC/FEA

作　　者：杜设亮[1] 傅建中[1] 陈子辰[1] 

机构地区：[1]浙江大学生产工程研究所,杭州310027

出　　处：《动力工程》2002年第3期1789-1792,共4页Power Engineering

基　　金：国家自然科学基金资助项目 (5 985 0 18)

摘　　要：研究了热压电仿生热鲁棒结构致动器放置优化的问题。首先提出了热压电介质的有限元动力学方程 ,并讨论了致动器的工作机理。在该基础上 ,用有限元法分析了梁的热应力和热变形以便找到致动器的最优放置。同时 ,提出目标函数评价系统的可控性来研究致动器的放置 ,并用具体实例阐明热压电致动器的位置和数目对系统可控度的影响。这两种分析方法的结果得到了相似的结论 ,表明可控度和有限元法是用来确定致动器优化放置的有效分析方法。图 4表 1参The actuator placement optimization of piezothermoelastic biotic thermal robust structure is studied in this paper. The finite element dynamics equations for piezothermoelasticity continuum are first presented and the working mechanism of actuator is analyzed. Based on this, FEA method is used to analyze the thermal stress and thermal deformation of a beam so that optimal actuator placement can be found. Objective functions are simultaneously presented to evaluate the system controllability so that actuator placement optimization studies can be conducted. And the effects of the location and number of piezothermoelectric actuator on the degree of system controllability are illustrated by numerical examples. From the results of two analysis methods, similar conclusions can be obtained. Namely, DC and FEA are efficient analysis methods to determine actuator optimal placement. Figs 4, table 1 and refs 6.

关 键 词：热压电仿生 热鲁棒结构 致动器 放置优化 有限元法 可控度 

分 类 号：TM22[一般工业技术—材料科学与工程] TP13[电气工程—电工理论与新技术]