Controlling chaos for energy harvesting via digital extended time-delay feedback

Chaotic vibrations may appear in nonlinear energy harvesting systems, which can be problematic when using the recovered power, as it require an extra expenditure of to rectify voltage signal or reduce process efficiency charging battery. Both cases derail harvester’s functionality. An alternative this situation is explore chaos control stabilize system dynamics so that regular and more suitable for use applications interest. This paper address problem employing extended delayed feedback method combines a displacement actuator digital controller implement mechanism. The strategy mathematically formulated tested bistable often operates chaotic regime. shows itself capable stabilizing at very low energetic cost.