References

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[BHW] J. A. Ball, J. W. Helton, and M. L. Walker, IEEE Trans Aut Contrl April 1993, originally the computer file SYSHinfTAC.m included here.

[BH5] J. A. Ball and J. W. Helton, Nonlinear $H^\infty$ control theory for stable plants, Math. Control Signals Systems 5 (1992), pp. 233-261.

[DGKF] J. C. Doyle, K. Glover, P. P. Khargonekar and B. A. Francis, State-space solutions to standard $H_2$ and $H_\infty$ control problems, IEEE Trans. Auto. Control 34 (1989), 831-847.

[HM] D. J. Hill and P. J. Moylan, "Dissipative Dynamical Systems: Basic Input-Output and State Properties", J. Franklin Inst. v.309, No.5, May 1980, pp.327-357

[HWZ] J.W. Helton, M.L. Walker, W. Zhan, Compensators which have access to the command signal, preprint

[IA] A. Isidori and A. Astolfi, Nonlinear $H^{\infty }$ control via measurement feedback, J. Math. Systems, Estimation and Control 2 (1992), pp. 31-34

[IB] A. Isidori and C. I. Byrnes, "Output Regulation of Nonlinear Systems", IEEE Trans. Aut. Contr., V.35, No.2, Feb.1990, pp. 131-140

[PAJ] I. R. Petersen, B. D. O. Anderson and E. A. Jonckheere, A First Principles Solution to the Non-Singular $H^{\infty }$ Control Problem, Int. J. Robust and Nonlinear Control, v.1, 1991, pp.171-185

[V2] A. J. Van der Schaft, -gain analysis of nonlinear systems and nonlinear control, IEEE Trans. Auto. Control 37 (1992), pp.770-784.

[W] J. C. Willems, Dissipative Dynamical Systems, Part I: general theory, Arch. Rat. Mech. Anal. 45 (1972), 321-351.