Nonlinear control schemes for an uncertain micro-cantilever beam: A simulation study

Abstract

Having known that human knowledge have experienced a significant progress so far in micro and nano arena, nobody can deny the importance of designing efficient and robust controller for such relevant systems. According to this, present study aims controller design for uncertain model of a micro-cantilever beam system. In doing so, first, a frequency independent nonlinear model is derived based on governing physical laws with having fringing and squeezed film damping effects fully taken into account. After modeling, sliding mode, and fuzzy sliding mode control methods are applied to the understudy system. The design process is described in detail for both. Then, in order to investigate the control performance, a set of simulations are run. Final results suggest that both controllers perform satisfactorily, however the fuzzy sliding mode controller seems to be slightly better in control performance while it also reduces the so-called chattering effect.