摘要
为了对霍尔传感器特性曲线进行有效的拟合,分析了三次样条函数在霍尔传感器特性曲线拟合中的理论,应用软件Matlab 6.5结合实验数据对UGM3501U型传感器的UH-B曲线进行了拟合,给出了传感器拟合点减少的方案,这样可以减少成本和工作量,但对相对误差影响不大。结果表明,原拟合的曲线与减少拟合点后的拟合曲线两者都很光滑,且精度高,相对误差很小,这种方法有很强的实用性和较高的理论价值。
In order to increase effectiveness to fitting the characteristic curve of the Hall sensor, the theory of the cubic splines functions were analyzed. In Matlab 6.5, the experiments with synthetical data of the UH-B curve of UGN3501U type was done. And a scheme for reduce the fitting points was proposed, which can cut down the cost and the worklod and has little effect to the relative errortoo. The experimental resluts illuminate that the fitting curve which reducing the fitting points with our method is also soomth and has high precision and little relative error in comparison with the original curve. As a result, the method is more valuable in theory and has strong practicability at the same time.
出处
《微细加工技术》
2008年第2期8-11,56,共5页
Microfabrication Technology
关键词
霍尔传感器
样条函数
特性曲线
非线性校正
拟合
hall sensor
splines function
characteristic curve
non-linear correction
fitting
