Bifurcations in an electro-vibroimpact system with friction

Bifurcation phenomena of an electro-vibroimpact system have been investigated by means of numerical analysis. It has been shown that the system undergoes transition from chaotic motion to periodic motion as the control frequency of the solid state relay (one of the system parameters) varies. A close co-relationship with an experimental bifurcation diagram has been observed. Periodic motion has been identified to yield better system performance over chaotic motion. The foundation of implementing an optimal feedback control strategy is established.