(5) and (6), against the position of the pad in several load conditions.
end{aligned} (5)The amplitude includes not only the capacitance, C, but also the combined resistance, (R_p), which depends on the position of the pad.
Therefore, on this setup, the capacitance estimation, and in turn the force estimation, should be independent from the position of the pad. Figure 3 shows the sum of the outputs of the current sensors, which corresponds to A in Eqs.
This particular experiment directly uses the signal ratios between the two current sensors, (tilde{x}_i = (-I_1+I_2)/(I_1+I_2)) [1-DOF versiof of Eq. (2), (i = 1, 2)], as a normalized position of each pad electrode.
The position of the padding influences the position of the resulting signal.
Making the incision at the bone is a good technique for maintaining the position of the fat pad.
The center position of the whole pad can be calculated by the mean position of all the electrode parts as ({varvec{x}}_c = tfrac{sum _{i=1}^{n}{varvec{x}}_i}{n}).
For a given position of the three pads, if the maximum usable magnitude of steering force (Amax) is within the inner circle and outer circle touching the hexagon, it can only be realized at a point on the hexagon, as shown in Fig. 3.
The 3D visualization of the external trunk surface registered with the underlying 3D bone structures permits the clinicians to select pressure areas on the trunk surface for proper positioning of correcting pads inside the brace according to the patient's specific trunk deformities.
The display demonstrated in previous studies measured the positions of the pads in a similar manner to surface-capacitive touch-screens.
