By setting up the rational mechanical model and measuring the horizontal displacement to calculate the sample Angle in composite force test, the problems of the sample Angle measurement can be solved.
The grating sensor is widely used in the modern precision measurement territory , especially in the measurement of linearity displacement and angle displacement, which has play a very important role.
光栅传感器是现代精密测量领域中广泛应用的一种传感器，尤其是在线位移和角位移的测量中发挥着重要作用。
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The paper introduces the basic principle of measuring displacement with laser interferometer, and gives a designing idea that realizes length measurement and angle measurement on one apparatus.