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. 2016 Jun 3;16(6):819. doi: 10.3390/s16060819

Figure 6.

Figure 6

Measured charges of a tactile unit and applied forces in reference six-axis load cell when sinusoidal forces (f = 20 Hz) in normal and shear directions were applied respectively. (a) Normal force with amplitude Fzm = 0.24 N; (b) normal force with amplitude Fzm = 1.45 N; (c) shear force in x-axis with amplitude Fxm = 0.2 N; (d) shear force in x-axis with amplitude Fxm = 0.49 N; (e) shear force in y-axis with amplitude Fym = 0.21 N; (f) shear force in y-axis with amplitude Fym = 0.48 N.