Analysis and control of nonlinear behaviour of a rotating electrical machine

In this paper, to achieve high accuracy of solutions in just one iteration, He’s energy balance method is used to investigate the nonlinear behaviour of a rotating electrical machine modelled as an oscillator with cubic elastic restoring force and time variable coefficients. Then designing and analysing adaptive Back-stepping control which are able to accommodate such nonlinearities by introducing new adaptive control schemes to overcome or compensate the effect of these nonlinarities is performed.