二维位置敏感器件(PSD)的畸变校正算法研究

计算机科学 ›› 2013, Vol. 40 ›› Issue (Z11): 150-152.

二维位置敏感器件(PSD)的畸变校正算法研究

张风奇,王永生,张宝尚,张求知

光电控制技术重点实验室洛阳471009;洛阳电光设备研究所洛阳 471009;光电控制技术重点实验室洛阳471009;光电控制技术重点实验室洛阳471009

出版日期:2018-11-16 发布日期:2018-11-16
基金资助:
本文受航空科学基金 (20105113002)资助

Research on Algorithm of Revising Two Dimensions PSD

ZHANG Feng-qi,WANG Yong-sheng,ZHANG Bao-shang and ZHANG Qiu-zhi

Online:2018-11-16 Published:2018-11-16

摘要/Abstract

摘要： 光电位置敏感探测器(PSD)是对信号光的位置直接检测的光电传感器,它的原理是计算光的权重来测量光的位置,直接输出的是模拟电流信号。但PSD的非线性严重影响着其应用的准确性。由于四边电极的影响,会使靠近边缘附近产生严重的非线性。就如何对PSD进行畸变校正进行了研究。通过对插值算法的研究,提出了用双调和样条插值算法来校正PSD产生畸变的离散点。通过仿真分析,校正后的均方误差能达到2.29μm。与神经网络方法相比,该方法有了较大的提高,效果令人满意。

关键词: PSD,位置检测,畸变校正,双调和插值

Abstract: Position sensitive detector is a photo electricity sensor which is sensitive to the position of signal．By calculating the weight of light,PSD can measure the position of light and output the analogy current signal．The non-liner has impact on the reliability of PSD．As a result of the influence of the marginal electrodes,serious non-linearity appears on the edge of PSD,which restricts the reliability and application．This paper took a research on how to revise the distortion．By studying the interpolation arithmetic,this paper put forward Biharmonic Spline interpor so as to revise the distortion point．Through simulation and analysis,the error can be limited to within 2.29um．It produces noticeably improvement compared with Nerve Network,which is satisfying.

Key words: PSD,Position detect,Distortion,Biharmonic spline interpolation

张风奇,王永生,张宝尚,张求知. 二维位置敏感器件(PSD)的畸变校正算法研究[J]. 计算机科学, 2013, 40(Z11): 150-152. https://doi.org/

ZHANG Feng-qi,WANG Yong-sheng,ZHANG Bao-shang and ZHANG Qiu-zhi. Research on Algorithm of Revising Two Dimensions PSD[J]. Computer Science, 2013, 40(Z11): 150-152. https://doi.org/

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