UNCERTAINTY CONTRIBUTION IN THE CASE OF COSINE FUNCTION WITH ZERO ESTIMATE - A PROPOSAL
UNCERTAINTY CONTRIBUTION IN THE CASE OF COSINE FUNCTION WITH ZERO ESTIMATE - A PROPOSAL
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零估计余弦函数情况下的不确定性贡献 - 一项提案
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
D. Röske
中科院分区：
文献类型：
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作者：
D. Röske
静态力矩标准机所产生的力矩的模型函数包含杠杆对水平面的倾斜度的余弦函数。倾斜杠杆的有效杠杆臂长度较短，在这种情况下产生的扭矩较小。对该模型函数进行不确定性分析，得出倾角估计值为零时的灵敏度系数为零，这在数学上是正确的，但从不确定性的角度来看，结果显然是不正确的。本文提出了一种处理这一问题的方法。
The model function of the torque generated in a static torque standard machine contains a cosine function for the inclination of the lever against the horizontal plane. An inclined lever has a shorter effective lever arm length, and a smaller torque is generated in this case. The uncertainty analysis of this model function gives a zero sensitivity coefficient for the inclination angle when the estimate of the angle is zero - a mathematical correct, but from the uncertainty point of view, obviously improper result. A method for dealing with this problem is proposed in this paper.