激光外差干涉儀在直線位移臺滾轉(zhuǎn)特性測量上的應(yīng)用
[Abstract]:In order to realize the rapid measurement of roll angle on large linear displacement in industry, a geometric symmetry four light path roll angle measurement system based on laser heterodyne interference technique is designed, and aiming at the larger stroke displacement table without rolling parameters, the paper presents a method for measuring the roll angle of geometric space symmetrical four light path based on laser heterodyne interferometry. The rolling characteristic measurement test was carried out. The test results show that the measuring system has good stability and anti-interference ability. It can not only eliminate crosstalk of other degrees of freedom errors, but also can efficiently measure the rolling characteristics of linear displacement stations with different accuracy. The rolling angle of the table is changed sensitively when the working conditions of the linear displacement table are changed. Using the commonly used 2 蟺 / 512 subdivision phasor and wedge reflector with the width of 120mm, the system angle measurement resolution is 0.8 ", and the maximum measurable stroke is 6 m. If the subdivision of the phasemeter is increased by 100 times, the measuring resolution of the roll angle will reach 0.008 ". When the width of the wedge reflector is doubled, the maximum measurable travel is more than 10 m.
【作者單位】: 上海理工大學(xué)光電信息與計(jì)算機(jī)工程學(xué)院;
【基金】:滬江基金資助項(xiàng)目(項(xiàng)目編號:C14002)
【分類號】:TH744.3
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