Matlab在发动机试验数据处理中的应用  

Application of Matlab in the Data Processing of Engine Test

作　　者：赵洁[1] 张翼[1] 李桃[2] 郭一平[1] 

机构地区：[1]中北大学机电工程学院 [2]中北大学机械工程与自动化学院

出　　处：《内燃机与配件》2011年第4期20-22,共3页Internal Combustion Engine & Parts

摘　　要：本文利用MATLAB强大的数据处理功能和绘图功能对发动机的性能试验数据进行处理,首先建立数学模型,再编制程序描点法绘出数据图,得出最初的描点图,再采用最小二乘分段多项式拟合法进行曲线拟合,最终得出较为完善的曲线图。采用最小二乘法分段多项式拟合法进形曲线拟合,即提高了工作效率,又可得出较为精确可靠的曲线方程和直观的拟合曲线。Using the powerful Junction of data processing and plotting of Matlab,this paper made processing to the data of engine performance test.First of all foundation the mathematical model,with that organization the procedure about the data plot by draw dot method,arrive at the draw scatter diagram of initial,and adopting the least square piecewise polynomial lilting method to lit curve,ultimately arrive that compare for the sophisticated curve.Adopting least square piecewise polynomial lilting method to lit curve,the precise and reliable curve equation as well as the intuitionistic lilting curve can be educed.

关 键 词：MATLAB 发动机 试验 数据处理 

分 类 号：TK407[动力工程及工程热物理—动力机械及工程]