介紹圖像傳感器對快速熱成型工件的外徑在線檢測原理。通過對誤差因素的實驗驗證和理論分析,給出一種適用的圖像信號的綜合誤差補償方法。該方法避開了難以檢測的誤差因素,借助易測的相關參量的在線估值,適時給出誤差補償量。該系統用于熱工現場,測控精度滿足工藝要求。
關鍵詞: 熱成型; 在線檢測; 誤差補償
Abstract : The principle of an imaging sensor used for on2line measurement of workpieces produced by high speed hot forming is presented. And a new compensation method of the synthesis error of on2line measurement of the image sensor signal is given by proof test and theoretic analysis of the major factors which resulted in the errors. Through this new method , the difficulties in direct on2line measurement of some errors are overcome by means of the
on2line estimated value of correlative parameters which are easy to determine , and the compensated amount of the cor2 responding error is given. Its application to the hot forming testing field showed that the measuring precision of this new method is satisfactory.
Key words : Hot forming ; On2line measurement ; Error compensation