Experimental Research of Displacement Sensor Based on Virtual Instrument Technology

[摘要] In order to create a kind of wide-ranged and nanoscale accurate displacement measurement which requires low manufacturing costs and has strong anti-interference capabilities and stable performance, the nanometer time-grating sensor based on AC electric field coupling has been researched. Functions like the settings of the frequency, amplitude and phase of standard waveform can be achieved by combining the LabVIEW software of virtual instrument development platform with the hardware of the PXI-5422 arbitrary waveform generator from NI company. The experiment concludes that phase adjustment can improve the accuracy through adjusting the amplitude of excitation signal which can avoid the effect that the different installation sites have on nanometer time-grating. The virtual instrument technology applying in the experiment of nanometer time-grating gives technological support to the improvement and progress of the function of excitation signal, which provide convenience to the research on the sensor.

[学科分类] 物理（综合）