| MATLAB曲线拟合工具箱在发动机特性拟合中的应用 |
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| 引用本文： | 黄兵锋,解方喜,傅佳宏.MATLAB曲线拟合工具箱在发动机特性拟合中的应用[J].襄樊学院学报,2014(5):24-28. |
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| 作者姓名： | 黄兵锋 解方喜 傅佳宏 |
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| 作者单位： | 湖北汽车工业学院汽车工程学院汽车动力传动与电子控制湖北省重点实验室;吉林大学汽车工程学院汽车仿真与控制国家重点实验室;武汉科技大学信息科学与工程学院; |
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| 基金项目： | 湖北汽车工业学院汽车动力传动与电子控制湖北省重点实验室开放基金项目(ZDK201205) |
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| 摘 要： | 文章阐述MATLAB的曲线拟合工具箱（Curve Fitting Toolbox）的交互式图形界面和程序调用两种方式的使用方法，并以某柴油发动机稳态工况下的试验数据绘制万有特性图为例，介绍利用曲线拟合工具箱进行曲面拟合的步骤和方法，并给出关键代码，探讨利用该工具箱改进拟合效果和绘图质量。对拟合结果的数理统计校验表明拟合结果完全符合要求，MATLAB的曲线拟合工具箱为发动机特性的曲面拟合提供更大的便利。
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| 关 键 词： | 发动机特性 曲面拟合 MATLAB 多元回归 曲线拟合工具箱 |
Application of MATLAB Curve Fitting Toolbox to Engine Characteristic Fitting |
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| Institution: | HUANG Bingfeng, XIE Fangxi, FU Jiahong (1. Hubei Key Laboratory of Automotive Power Train and Electronics, Hubei University of AutomotiveTechnology, Shiyan 442002, China; 2. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China; 3. School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, China) |
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| Abstract: | It discusses the interactive graphical interfaces and routine call of MATLAB curve fitting toolbox. Taking the universal characteristic map plotting of a diesel engine under a steady-state condition as an example, it introduces the procedures and methods of surface fitting with curve fitting toolbox and key codes are provided. Methods are discussed on how to improve the imitative effect and the drawing quality. The results show that the fitting accuracy is very high;MATLAB curve fitting toolbox can provide much convenience to the surface fitting. |
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| Keywords: | Engine characteristics Surface fitting MATLAB Multiple regression Curve fitting toolbox |
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