To address this gap, a strain feedback compensation method is proposed in this paper for accurate strain control.
The strain feedback compensation method needs an accurate measurement to monitor strain.
Thus, we proposed a strain feedback compensation method based on DIC to accurately control the strain of membranes during the tensile experiments.
The detailed process of the strain feedback compensation is shown in Figure 3.
This result demonstrates that all specimens remained in their mechanical linear region during the tensile experiments, satisfying the assumption of our strain feedback compensation method.
It is also notable that no matter what the target strain is, the relative error after compensation is always below 0.5%, which demonstrates that the effect of our strain feedback compensation method is very significant.
The present study corroborates previous work using within-subjects designs and steady-state performance to design compensators and shows the gains to be expected by band-limiting feedback compensation
. In addition, it shows that the acquisition of skill is a sensitive indicator of the adequacy of a compensation scheme for delayed visual feedback.