自动门
自动门:系统误差的削除(减弱)方法
发布时间:2015/5/8
自动门讯:
系统误差的削除(减弱)方法
系统误差最显著的特点就是在一定的条件下,其数值服从于某一确切函数规律。这个规律,原则上是可以结合有关的专业知识,通过理论分析或实验的方式加以掌握,由于系统误差具有上述特点,因此其处理方法与随机误差也就不同,一般就来,属于测量技术的问题,主要针对产生系统误差的原因进行具体的分析,现采取相应的措施。
虽然系统误差是一种按确切函数变化的误差,但由于菘涉及具体测量对象及原理的分析,能否处理得当在很大程度上取决于测量人员的经验、学识和技巧,所以处理起来往往比没有确切函数规律的随机误差还要。尽管如此,有些现象仍具有一定的代表性,如果将它们加以研究、归纳与总结,就具有普遍指导意义。
由于系统误差不可能通过对测量数据的概率统计处理来消除,甚至未必能通过数据处理来发现。因此,如果存在着系统误差而没有发觉出来,就会严重影响测量结果,所以对系统误差的发现和检查具有很重要的意义。
由此可见,在测量之前必须可能了解一切可能产生系统误差的来源,并设法消除它们,或使其影响减弱到可以接受的程度,其次,在实际测量中可以采取一些有效的测量方法,来消除或减弱系统误差对测量结果的影响;再者,在进行测量结果处理时,设法检查是否有未被注意的系统误差——高潮估计出未能消除现时残留下不的系统误差对最终测量结果的,即设法估计出残余的系统误差的数值范围。
产生系统误差的主要因素,这里主要介绍按照常用的减小系统误差的方法,在相当程度上可减弱或消除系统误差的。
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