Sensitivity laws and prediction of piezoelectric force sensors at different loading points

Table 1. Sensitivity of dynamometer with changed position
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Table 1. Sensitivity of dynamometer with changed position
Coordinate/mm -100 -50 0 50 100
100 3.98 3.74 3.85 3.86 3.82
50 3.88 3.94 3.83 3.81 3.80
0 3.84 3.84 3.92 3.82 3.82
-50 3.88 3.89 3.87 3.79 3.79
-100 3.83 3.81 3.84 3.78 3.76

Table 2. Sensitivity of dynamometer with changed position
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Table 2. Sensitivity of dynamometer with changed position
Loading position $X_{1}$ $X_{2}$ $X_{3}$ $X_{4}$ $X_{5}$
Sensitivity/（mV·N^-1） 7.82 7.99 8.08 8.17 8.29

Table 3. Sensitivity of dynamometer with changed position
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Table 3. Sensitivity of dynamometer with changed position
Loading position" $Y_{1}$ $Y_{2}$ $Y_{3}$ $Y_{4}$ $Y_{5}$
Sensitivity/（mV·N^-1） 7.97 8.06 7.81 7.90 7.88

Table 4. Calculation error and standard deviation of sensitivity
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Table 4. Calculation error and standard deviation of sensitivity
Loading direction X Y Z
Computational error /% 8.6 9.3 12.4
Standard deviation of the error 1.86 1.77 2.61

Table 5. Prediction deviation and standard deviation of sensitivity
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Table 5. Prediction deviation and standard deviation of sensitivity
Optimization method GA ACO GWO
e/% σ e/% σ e/% σ
X 5.13 2.80 3.76 2.63 2.72 1.03
Y 3.20 3.05 6.80 7.13 1.97 2.12
Z 0.61 0.37 0.86 0.47 0.47 0.25

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Jun ZHANG, Tiantian ZHEN, Jiale CAI, Mengtong LI, Yuting LIU. Sensitivity laws and prediction of piezoelectric force sensors at different loading points[J]. Optics and Precision Engineering, 2023, 31(18): 2656

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