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. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: Ann Biomed Eng. 2013 Aug 14;42(1):36–49. doi: 10.1007/s10439-013-0886-3

FIGURE 4.

FIGURE 4

Improvement of compressive force repeatability by the feedback mechanism can be seen from average values (a) and standard deviation (b) of the compressive forces during a 30 min loading period. The measurements were obtained from six time windows (0–50 s, 250–300 s, 550–600 s, 850–900 s, 1150–1200 s, and 1450–1500 s) from five rabbits while the feedback was enabled or disabled. It can be clearly seen that the feedback can maintain the compressive force around the set point with a smaller standard deviation comparing to the no feedback group. The compressive force was set at 5 N.