Wenjuan Sheng, Zhengbin Hu, Ning Yang, Gangding Peng. Demodulation of Temperature Stabilized Fiber Bragg Grating Sensor Based on Optimized Least Square Support Vector Machine[J]. Laser & Optoelectronics Progress, 2022, 59(3): 0305002
- Laser & Optoelectronics Progress
- Vol. 59, Issue 3, 0305002 (2022)
Fig. 1. Flow chart of the improved BAS-PSO
Fig. 2. Principle of the FBG sensor measurement system
Fig. 3. Position of the reference grating and sensor grating. (a) No strain condition; (b) strain condition
Fig. 4. Change curves of temperature and strain during the cooling process. (a) Temperature change; (b) spectral position; (c) G1; (d) G2
Fig. 5. Change curves of strain and temperature after smoothing. (a) G1; (b) G2; (c) temperature
Fig. 6. Change curve of fitness function value with the number of iterations (G1)
Fig. 7. Change curve of fitness function value with the number of iterations (G2)
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Table 1. Modeling compensation results of different optimization algorithms for G1unit: pm
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Table 2. Modeling compensation results of different optimization algorithms for G2unit: pm
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Table 3. Temperature compensation error of different algorithmsunit: pm
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