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MEASUREMENT METHOD FOR VIBRATION DISPLACEMENT USING STATE VARIATION PRINCIPLE
MEASUREMENT METHOD FOR VIBRATION DISPLACEMENT USING STATE VARIATION PRINCIPLE
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机译:状态变化原理的振动位移测量方法
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摘要
Provided by the present invention is a vibration displacement measuring method using a state variational principle. The vibration displacement measuring method using a state variational principle is able to: improve the degree of precision up to a picometer level in comparison with existing methods; remarkably save the capacity of a memory necessary for a measurement and various calculations in comparison with the existing methods; and be performed in real time by using a high speed DSP or FPGA. To achieve the purposes described above, the vibration displacement measuring method using a state variational principle of the present invention includes the following steps of: overlapping a measuring laser beam reflected from a calibrated subject which generates rotational vibrations and a reference laser beam reflected from a fixed reference plane and receiving the laser beams to an optical sensor; and calculating the vibration displacement of the calibrated subject by using an electrical output signal outputted from the optical sensor.
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