Variable stability simulation techniques for nonlinear rate-dependent systems

This paper deals with the development of variable stability simulation techniques for nonlinear rate-dependent systems. In particular, the model-following and response-feedback modes of dynamic simulation are considered for these systems. The paper begins with a development of variable stability simulation theory for nonlinear rate-dependent systems. Simple examples are given to demonstrate the application of the theory. A model-following flight control system, in which the inertial coupling nonlinearities of the plant and model are taken into account, is then developed. Time histories are included to demonstrate the quality of model following that can be achieved. Finally, linear systems are considered as a special case of the general theory.