论文部分内容阅读
1.准确度对应的英文为(accruacy),这个词既可用于说明测量结果,也可用于测量仪器在的示值。当用于测量结果时,表示测量结果与被测量真值之间的一致程度。当用于测量仪器时,定义为测量仪器给出接近于真值的能力,所有这些场合,准确度均为一种定性的概念而非定量的。因此,准确度不象测量误差、测量不确定度,它不是物理量,没有一个定量的定度。测量误差定义为测量结果减被测量之真值,是两量之差,可以定量地给出。准确度则不能。所谓定量,就是用量值表达。例如,我们说某测量仪器的示值误差为-7.8mA,这是定量的表达,给出了量值,-7.8mA。但我们决不能说这一测量仪器的准确度为-7.8mA或是±7.8mA,或是小于等于7.8mA。当某个测量仪器的引用误差(fiducial error of a measuringinstrument)不大于0.01时(1％),往往按照有关该仪器的标准或检定规程,该仪器的准确度为1级。但只是准确度为1级而决非准确度为1％。注意:1％是个量值。
1. Accuracy corresponds to the English (accruacy), the term can be used to illustrate the measurement results can also be used for measuring instruments in the indication. When used in measurement results, indicates the degree of agreement between the measurement result and the measured true value. When used with a measuring instrument, it is defined that the measuring instrument gives the ability to approach a true value, and in all cases accuracy is a qualitative concept rather than a quantitative one. Therefore, the accuracy is not the measurement error, measurement uncertainty, it is not a physical quantity, there is no quantitative fixed. Measurement error is defined as the measured value minus the true value of the measurement, is the difference between the two, can be given quantitatively. Accuracy can not. The so-called quantitative, is the amount of expression. For example, let us say that a measuring instrument has an indication error of -7.8mA, which is a quantitative expression, giving a magnitude of -7.8mA. But we must not say that the accuracy of this measuring instrument is -7.8mA or ± 7.8mA, or less than or equal to 7.8mA. When the fiducial error of a measuring instrument is not more than 0.01 (1%), the accuracy of the instrument is usually in accordance with the standard or verification procedures for that instrument. But only the accuracy of 1 and never the accuracy of 1%. Note: 1% is a measure.