基于激光位移傳感器的光電非接觸圓度測量

為了提高圓度測量的效率和準(zhǔn)確性，針對目前手工檢測效率低等缺點(diǎn)，提出一種以激光位移傳感器的測距原理為依據(jù)的光電非接觸圓度測量方法。與傳統(tǒng)方法相比，該方法首先搭建了以精密轉(zhuǎn)臺(tái)和步進(jìn)伺服執(zhí)行機(jī)構(gòu)為主的測量控制系統(tǒng)平臺(tái)。其次，利用機(jī)械裝置的相對運(yùn)動(dòng)，通過傳感器采樣測量物體的各測量點(diǎn)的截面信息，用最小二乘圓的評定方法得到各截面測量誤差，最終實(shí)現(xiàn)圓度誤差測量。結(jié)果表明，通過仿真獲得隨機(jī)誤差系數(shù)在對圓度誤差測量影響的數(shù)學(xué)表達(dá)式，并驗(yàn)證了測量中存在的系統(tǒng)誤差修正方法的正確性。

Abstract:

?In order to improve the efficiency and accuracy of roundness measurement， in view of the current low efficiency defects of manual detection， this paper proposes an electro-optical non-contact method of roundness measurement based on distance measurement principle of a laser displacement sensor. Compared with the traditional methods， this method firstly built a measurement and control system platform based on precision turntable and stepper servo implementing agencies.Secondly， the relative movement of mechanical devices drived sensor to sample measurements of objects at various locations of the cross-sectional information， using least-squares method of assessing the circle to gain the cross-section measurement error， and ultimately achieved roundness error measurement. The results obtain through the simulation the mathematical expressions of the faction that the random errors coefficient action the function of the measuring roundness error， and verify that the system exists in the measurement error correction method.