A Combined Softening and Hardening Mechanism for Low Frequency Human Motion Energy Harvesting Application
Figure 3
Time history ((a), (c), (e), (g)) and harmonics ((b), (d), (f), (h)) of human motion resulting from jogging at 9 km/h. Vibration recorder was placed at the head ((a), (b)), leg ((c), (d)), waist ((e), (f)), and wrist ((g), (h)).