Feedback linearization of multi-input thermal plants

A multi-input nonlinear plant is considered. A new linearization technique is examined that transforms the nonlinear system into an equivalent linear system. In this method one of the control signals is made as a linear combination of states. The linearization technique based on feedback is applied for such systems. It is shown that there are systems, which are only linearizable when using the approach presented. This class of systems is relatively narrow, but is often seen in thermal plants. An example of heat exchanger was examined in order to illustrate the developed procedure