A Combined Softening and Hardening Mechanism for Low Frequency Human Motion Energy Harvesting Application

Table 2

Average rotational speed resulting from the measured input. The bold values are the fastest rotational speed for each location and activity.

		Average rotational speed RPM
Signal location/activity		Combined mode configuration with 180 degree angle of twist
		Configuration 1	Configuration 2	Configuration 3
Head	Walking	360.1	335.0	286.3
	Running	680.4	886.8	963.6
Wrist	Walking	714.2	781.4	621.8
	Running	1988.0	2029.0	1956.0
Waist	Walking	652.4	585.4	637.3
	Running	1740.0	1147.0	1322.0
Leg	Walking	1396.0	931.7	1351.0
	Running	2280.0	1295.0	1871.0