Ziran CHEN, Hengxiao ZHANG, Zhiying HE, Hongyou CHEN, Haiyou YU. Magnetic field time-gate displacement sensor based on discrete winding and its error characteristics[J]. Optics and Precision Engineering, 2023, 31(19): 2836
- Optics and Precision Engineering
- Vol. 31, Issue 19, 2836 (2023)
Fig. 1. Overall structure of magnetic-field type time-gating displacement sensor
Fig. 2. Position of induction winding and excitation winding
Fig. 3. Schematic diagram of displacement solution scheme
Fig. 4. Different installation attitudes of sensor moving ruler
Fig. 5. Simulation results under different excitation signal amplitudes within a pitch
Fig. 6. Displacement error curves and error spectra of different excitation signal amplitudes within a pitch
Fig. 7. Tilting diagram of moving ruler
Fig. 8. Simulation results under different tilt angles within a pitch
Fig. 9. Displacement error curves and error spectra for different tilt angles within a pitch
Fig. 10. Flipping diagram of moving ruler
Fig. 11. Simulation results under different flip angles within a pitch
Fig. 12. Displacement error curves and error spectra for different flip angles within a pitch
Fig. 13. Deflection of moving ruler
Fig. 14. Simulation results under different deflection angles within a pitch
Fig. 15. Displacement error curves and error spectra for different deflection angles within a pitch
Fig. 16. Fixed and moving scales of sensors
Fig. 17. Experimental platform for error characteristics of time-gate displacement sensor
Fig. 18. Prototype of time-gate displacement sensor
Fig. 19. Measurement error curves and error spectra of different excitation signal amplitudes within a pitch
Fig. 20. Measurement error curves and errors spectra for different tilt angles within a pitch
Fig. 21. Measurement error curves and error spectra for different flip angles within a pitch
Fig. 22. Measurement error curves and error spectra for different deflection angles within a pitch
Fig. 23. Measurement error curves before and after harmonic correction within full-range
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Table 1. Influence of excitation signal error and mounting error on measurement accuracy over entire scale
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