Techniques of Model-Based Control

Appendix F. SIMULINK Tutorial

Objectives

• Learn how to model nonlinear systems using SIMULINK.

• Learn how to model discrete time systems.

• Learn how to set up masks for systems.

Basics

Consider the process shown in Figure F.1. We want to study how tank level h(t) varies with inlet flow f_in(t). A mass balance around the tank yields (assuming area of tank A = 1m², and that the density ρ is constant)

Accumulation of fluid mass in tank = Input of fluid – Output of fluid:

Figure F.1. Model of level variations in a tank.

Let us assume that outlet flow is proportional ...