应用参数设计法改善轻触薄膜位置检查装置的测量精度
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摘要
贴膜位置的偏移是轻触薄膜开关出现不良品的主要因素之一,位置偏移量的大小在很大程度上取决于用来检查贴膜位置偏移的位置测量装置的测量精度.通过参数设计的方法,系统分析影响位置测量装置测量精度的影响因素,依据L_(18)(2~1×3~7)正交表安排正交试验,将贴膜上20个金属弹片两两之间的距离作为信号因子,通过比例式校准模型分别计算每次试验的SN比和比例系数,分析最优的因子水平组合.研究表明,优化后的位置检查装置识别能力得到了明显的改善,最适合条件的位置检查装置具有更好的测量精确度.
The deviation size is largely dependent on the measurement accuracy of position testing fixture used to check membrane position.With parameter design method,system can analyze the factors influencing the measurement accuracy of position testing fixture and arrange orthogonal experiment according to L_(18)(2~1 × 3~7)orthogonal table.Using the distance between each two of 20 metal shrapnel in the membrane as signal factor,it can analyze the optimal factor level combination by calculating SN and proportionality coefficient of each test respectively with proportional calibration model.The research shows that the recognition capability of position testing fixture after optimization have been obviously improved and the position testing fixture of the most suitable condition has better measurement accuracy.
The deviation size is largely dependent on the measurement accuracy of position testing fixture used to check membrane position.With parameter design method,system can analyze the factors influencing the measurement accuracy of position testing fixture and arrange orthogonal experiment according to L_(18)(2~1 × 3~7)orthogonal table.Using the distance between each two of 20 metal shrapnel in the membrane as signal factor,it can analyze the optimal factor level combination by calculating SN and proportionality coefficient of each test respectively with proportional calibration model.The research shows that the recognition capability of position testing fixture after optimization have been obviously improved and the position testing fixture of the most suitable condition has better measurement accuracy.
引文
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[2]Purwar S,Kar I N,Jha A N.Adaptive output feedback tracking control of robot manipulators usingposition measurements only[J].Expert Systems with Applications,2008,34(4):2789-2798.
[3]张尧禹,张明慧,乔彦峰.一种高精度非接触位置测量系统[J].光学精密工程,2002,10(1):41-44.
[4]严军,董志华.CCD超分辨率位置测量方法及性能分析[J].测试技术学报,2006,20(3):189-194.
[5]韩之俊,靳京民.测量质量工程学[M].北京:中国计量出版社,2000:21-31.
[6]Stuckman B E,Perttunen C D,Usher J S,et al.Stochastic modeling of calibration drift in electrical meters[C]//Instrumentation and Measurement Technology Conference,1991:530-536.
[7]陈晓怀,张勇斌,朱忠奎.应用神经网络对测量仪器进行校准[J].仪器仪表学报,2001,22(4增):52-53.
[8]赵宇,陈松涛.用田口方法推断校准仪器的测量不确定度[J].电子测量与仪器学报,2005,19(2):37-40.
[9]朱立峰,薛跃,韩之俊.基于质量损失函数的仪器最佳校准周期的确定[J].电子工程师,2005,31(8):15-18.
[10]Jung J R,Yum B J.Artificial neural network based approach for dynamic parameter design[J].Expert Systems with Applications,2011,38(1):504-510.
[11]Boylan G L,Cho B R.Comparative studies on the high-variability embedded robust parameter design from the perspective of estimators[J].Computers&Industrial Engineering,2013,64(1):442-452.
[12]袁江涛,杨立,张健,等.采样样本的容量对雾滴尺寸测量精度影响的试验研究[J].仪器仪表学报,2009,30(10):2112-2117.