Nonlinear dynamics of a new energy harvesting system with quasi-zero stiffness

• A new energy harvesting system has been designed QZEH. The areas where the best is possible have identified. method of impulse excitation on solution was proposed. probability with effectivity determined. This paper presents results modelling a nonlinear multi-stable QZEH (quasi-zero harvester) for from vibrating mechanical devices. Detailed tests were carried out model, which consisted beam and springs, used to determine potential quasi-flat well. Two-dimensional distributions Lyapunov exponent output numerical using assumed range variability within control parameters, plotted as map in multi-color. These maps are related diagrams RMS values voltage that induced piezoelectric electrodes. To identify optimal conditions vibrations, multi-colored produced. Its reference distribution map, showed chaotic motion zones, reduced. Based established sections exponent, solutions (DS) showing number coexisting their periodicity drawn. Multiple basins attraction On basis it estimate obtaining greatest efficiency. Moreover, acting trajectory, by means an initiated at specific moment time, model visualized excitations. direct tristable (TEH) clearly indicates advisability terms higher amplitudes. also shows improved ability harvest low frequencies.