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. 2021 Apr 22;16(4):e0250325. doi: 10.1371/journal.pone.0250325

Fig 7.

Fig 7

Dynamic characterization results: (a) step response from 0 to 6 V; (b) stepwise response with random time spans for the pressure versus the contraction ratio; (c) block diagram for open-loop control of the UH-PAM.