Cubic Nonlinear Vibration Isolation Control System Performance Studies And Numerical Methods

Using wave balance method of nonlinear theory , we analyze active control systemwith third nonlinear isolate vibration. We compare not only the nonlinear's influence to control system with (without) feedback, but also the feedback?influence to control system. It provides important theory for engineering appliance. When calculating this problem, we usually regard out loads as linear. In this article, we give a new calculate method on the base of precise integration. At the same time, we compare the result of the two ways. It proves that the new method is more accurate. At last, we deduce integral equation of control system with third nonlinear isolate vibration. Now, active control system has the problem of time delay, to this point we put forward a method of forcasting on line. When using this method, we can solve the problem of time delay In fact, it is a useful way.