ABSTRACT
In Chapter 3, we addressed the problem of designing stabilizing feedback controllers using a standard state-feedback approach. Then in Chapter 4, we discussed a second approach to the same problem based on H∞ theory. Here, we move another step further and examine a third design approach called guaranteed cost control. As we shall see in the sequel, this appraoch uses a fixed Lyapunov functional to establish an upper bound on the closedloop value of a quadratic cost function. Keeping up with our objective throughout the book, we will start by treating continuous-time systems and then deal with discrete-time systems.
