Design of reduced-order H~∞ controllers for nonaffine nonlinear systems

摘要

Sufficient conditions are proposed for the existence of reduced-order (fixed-order) con-trollers solving the H~∞ control problem for nonaffine nonlinear systems. State-space formulas for such reduced-order controllers are also derived in terms of the solutions to two standard Hamilton-Jacobi-Isaacs partial differential inequalities.