基于光三角測量原理，提出了一種內(nèi)徑尺寸的非接觸測量方法。對單光三角測量原理進(jìn)行了分析，給出了相應(yīng)的內(nèi)徑尺寸計(jì)算公式，并建立了解決單光三角法光探頭偏心的數(shù)學(xué)模型。應(yīng)用單光三角測量原理，結(jié)合半導(dǎo)體激光準(zhǔn)直技術(shù)、現(xiàn)代傳感技術(shù)、伺服控制技術(shù)和計(jì)算機(jī)技術(shù)研制了一種非接觸式內(nèi)徑尺寸測量系統(tǒng)。論述了系統(tǒng)的組成和總體結(jié)構(gòu)，并通過實(shí)驗(yàn)對系統(tǒng)的測量精度進(jìn)行了驗(yàn)證。結(jié)果表明：測量系統(tǒng)分辨率可達(dá)0.01 mm，測量極限誤差不大于0.03 mm，該測量方法是可行的。
關(guān) 鍵 詞 內(nèi)徑; 光三角法; 非接觸測量; 光電測量系統(tǒng)

Abstract Based on optical triangulation measuring principle, an inner diameter non-contact measuring method is presented in this paper. First, the principle of optical single-triangulation which is used for non-contact measurement of inner diameter is analyzed and described. The corresponding formula for calculating the dimension of inner diameter is presented. The mathematics model for solving eccentricity of optical head which is adopted in the optical single-triangulation method is founded. The paper adopts optical single-triangulation measuring principle to design a system of inner diameter non-contact measurement with the technique of laser collimation, modern sensor, servocontrol, computer, etc. In this paper, the constitution and overall structure of the system are described, and also, the accuracy of system is verified by experiments. the measuring system resolving power can reach 0.01 mm, the limited measuring error not more than 0.03 mm. It indicates that the measuring method is applicable.
Key words inner diameter; optical triangulation; non-contact measurement; optoelectronic measuring system