Self-sufficient electronic control for nonlinear, frequency tunable, piezoelectric vibration harvesters

[摘要] Research in vibration energy harvesting focuses increasingly on nonlinear harvesters. In comparison to linear harvesters they show an inherent larger bandwidth through hardening or softening effects and higher conversion efficiency. A further increase of the bandwidth and thus a higher energy yield can be achieved by controlled tuning of such a nonlinear system. In this paper a self-sufficient tuning control electronic, which is directly powered by the harvester, is presented.

[发布机构] Laboratory for Design of Microsystems, IMTEK, University of Freiburg, Georges-Koehler-Allee 102, Freiburg; 79110, Germany^1

[效力级别] 能源学

[关键词] Control electronics;Electronic controls;Energy yields;Piezoelectric vibration;Softening effect;Vibration energy harvesting