Control Theory, Second Edition

Please refer to Section 16.9 for recommendations
In addition, it will be worth becoming familiar with a different viewpoint based on Kharitonov's theorem (1979) and which is very straightforward in applications; process uncertainty is dealt with by defining parameters as intervals rather than by fixed numbers. A geometrically visualisable Hurwitz type test is then carried out on the edges of the hull representing all the possible Hurwitz polynomials. See Tan and Atherton (2000) for a useful summary.
Also relevant is the technique of quantitative feedback theory (QFT) pioneered by Horowitz (1993). QFT is a frequency response technique that uses feedback to compensate the effects of unmeasurable process uncertainties or non-linearities. See also Yaniv (1999).
Closely associated with robust control are the topics of sensitivity analysis, Saltelli et al. (2000) and algorithm fragility, Istepanian and Whidborne (2001).