【摘要】：為提高內徑量表的測量準確度,采用數(shù)學建模與實驗測量相結合的方法對雙正弦機構的原理誤差進行研究。在正弦機構的理論基礎上,針對內徑量表建立雙正弦機構的傳動模型,通過與百分表刻度特性比較得到原理誤差模型。提出兩種通過調整傳動特性來減小原理誤差的方案,利用軟件建模分析表明杠桿臂長的最佳調整模型對減小原理誤差的效果更優(yōu)。自行設計實驗平臺對原理誤差進行重復測量,初步驗證杠桿臂長轉角與原理誤差的非線性特性,建議后續(xù)研究可從分析雙正弦機構初始位置的角度改進測量實驗。該研究為工程實際應用中調修內徑量表、提高測量準確度提供理論基礎。
[Abstract]:In order to improve the measuring accuracy of the inner diameter meter, the principle error of the double sinusoidal mechanism is studied by combining the mathematical modeling with the experimental measurement. On the basis of the theory of sinusoidal mechanism, the transmission model of double sinusoidal mechanism is established according to the inner diameter meter, and the principle error model is obtained by comparing the characteristics of the double sinusoidal mechanism with that of the dial gauge. Two schemes are proposed to reduce the principle error by adjusting the transmission characteristics. The analysis of software modeling shows that the optimal adjustment model of lever arm length is more effective in reducing the principle error. The self-designed experimental platform is designed to measure the principle error repeatedly, and the nonlinear characteristics of the long rotation angle and the principle error of the lever arm are preliminarily verified. It is suggested that the following research can improve the measurement experiment from the angle of analyzing the initial position of the double sinusoidal mechanism. The research provides a theoretical basis for the revision of the inner diameter meter and the improvement of measurement accuracy in engineering practice.
【作者單位】： 中國計量大學浙江省流量計量技術研究重點實驗室;
【基金】：浙江省流量計量儀表及在線校準技術重點科技創(chuàng)新團隊項目(2009R50024)
【分類號】：TH711

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