基于极大似然估计法求解微燃机特性反问题  

Micro-Turbine Inverse Problem Using Maximum Likelihood Estimation Method

作　　者：欧阳艳艳[1,2] 张士杰[1] 肖云汉[1] 

机构地区：[1]中国科学院先进能源动力重点实验室(工程热物理研究所),北京100190 [2]中国科学院研究生院,北京100049

出　　处：《工程热物理学报》2011年第4期541-545,共5页Journal of Engineering Thermophysics

基　　金：国家973计划资助项目(No.2007CB210102)

摘　　要：发展了一种基于极大似然估计法求解微燃机特性反问题的方法。构建了微燃机全工况模型和反问题求解方法。为对上述模型和方法进行验证,将模拟数据加上测量误差作为反问题的求解条件,反推了单元部件额定效率和压气机特性模型参数。结果表明,单元部件额定效率估计值与原给定值差别较小,压气机特性模型能够较好地表达压气机特性线信息。Based on maximum likelihood estimation method,a method of solving the micro-turbine characteristics inverse problem was developed.Micro-turbine model and the method of solving inverse problem were built.In order to validate the model and the method built,the simulated results were added into errors as the solving conditions of the inverse problem,and the design parameters and compressor characteristic model parameters were estimated.The results show that the parameters were estimated perfectly,and the compressor characteristic model with the estimated parameters can properly predict the centrifugal compressor characteristics.

关 键 词：微燃机 反问题 极大似然估计法 

分 类 号：TK47[动力工程及工程热物理—动力机械及工程]