Practical input-output stability analysis techniques applied to DC machine systems

Input-output stability is an important indicator of proper propulsion system design. Developing methods to analyze and quantify input-output stability is of particular interest. In this paper, input-output stability techniques based on Lyapunov equation optimization and linear matrix inequalities are set forth and applied to a dc machine system with controls, providing a practical means of predicting system behavior due to changes in disturbance torque modeled as an input.