A Lyapunov Based Nonlinear Control Scheme for Stabilizing a Basic Compression System Using a Close-Coupled Control Valve

The use of a closed loop control to allow surge free operation of a compression system beyond its uncontrolled surge line is addressed. In contrast to previous analyses which used a linearized model, the approach described here directly addresses the nonlinear nature of the compressor characteristic using a Lyapunov based control law design formulation. The proposed approach is fairly generic, and should be of interest for gas turbine engine, as well as other applications.