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封闭原则是长度计量的最基本原则,它在圆周分度器件、方形类器件测量中得到广泛应用,解决了在机械制造、工程测量、大型设备安装调试中遇到关于角度需要测量的诸多问题。在没有更高精度的圆分度标准器的情况下,采用“自检法”便可以实现自身的高精度测量,免去高成本的标准系统,在节能降耗方面效果显著。首先介绍封闭原则的涵义,然后通过实例分析如何根据封闭原则进行角度“自检”。
The principle of closure is the most basic principle of length measurement. It is widely used in the measurement of circumferential indexing devices and square devices. It solves many problems that need to be measured in angle measurement, such as mechanical manufacturing, engineering measurement and large equipment installation and debugging. In the absence of more accurate circular indexing device, the use of “self-test method ” will be able to achieve their own high-precision measurement, eliminating the need for high-cost standard system, the effect is significant in energy saving. First introduce the meaning of the principle of closure, and then through examples to analyze how to carry out the principle of “self-examination ” according to the principle of closure.