ABSTRACT

In Chapter 4, state feedback control of a class of nonlinear system with actuator nonlinearities was presented by assuming that the states are available for measurement. In many industrial applications, all the states are normally not measurable. Only certain outputs are measured and they have to be used as feedback variables. Under those circumstances, one has to design an observer to estimate the states from the measured outputs and then a controller using the estimated states. Therefore, output feedback controller schemes are necessary when certain states of the plant become unavailable for measurement. In this chapter, the output feedback control of a class of multi-input and multi-output (MIMO) nonlinear discrete-time system is presented.