锁定放大器在时栅位移传感器动态测量中的应用

摘要

时栅位移传感器在进行动态测量时,除激励磁场外,持续运动的圆栅转子/直线栅动子也影响动测头信号的变化,以致时栅的测量精度下降.研究了一种基于锁定放大器的信号处理方法,用于时栅动、定测头信号的处理,仿真实验和实际动态误差采集表明,该处理方法可以解决上述问题.%In dynamic measurement with time-grating displacement sensor,the signal of moving probe was also affected by un-intermitted movement of round-time-grating's rotor or linear-time-grating's mover in addition to excitation magnetic-field,and thereby there was a decline in precision of time-grating. A signal-processing method was proposed to process the signals from moving and stationary probe in time-grating,and both experiment results based on simulation and practical dynamic error-acquisition show effective solution to cope with the problem above-