摘要
针对现有对中测量方法及计算模型复杂不利于计算机辅助编程的情况,根据激光对中仪的原理,突破传统的以主动及从动轴为标准分别建立独立的坐标系的方法,利用投影关系,将从动轴坐标投影至主动轴坐标系内,从而将多维空间关系简化为多个二维关系。根据主、从动轴不对中时从动轴坐标在主动轴坐标投影轨迹偏差,可任意选取差异样例点,对对中数学模型系统降维,简化对中数学模型,从而简化了对中模型的计算;实验分三组测定,每次6组转角,计算平均绝对偏差分别为0.073 mm和0.034 mrad,同轴度及同轴度公差的实验结果符合工程技术标准;最后,在该数学模型推证的基础上,讨论了该系统所存在的主要系统误差以及为消除系统误差的影响所应采取的措施。
According to the principle of laser shaft alignment~ based on the projection method, the multi--dimensional relationship is simplified to a few two--dimensional relations in order to simplify the mathematical model, thereby simplifying the calculation. Experimental determination of three groups, each group of six angle groups, calculating the average absolute deviation of 0. 073ram and 0. 034mrad, con centricity and coaxiality tolerance test results meet the engineering standards. At same time, the error factors of the model are analyzed, and the methods for improving is provided.
出处
《计算机测量与控制》
北大核心
2014年第2期548-550,553,共4页
Computer Measurement &Control
基金
国家重大科技专项基金项目(2012ZX04011-012)
关键词
对中误差
激光
激光对中仪
算法
shaft alignment error
laser
laser shaft alignment instrument
algorithm
