Case Study I — A Two-Tank Liquid Level Control System

Abstract

Systems involving tanks containing liquid are found in many industrial situations. Examples include blending and reaction vessels in chemical processes and boiler systems in electrical power stations. The design of automatic control systems for the regulation of liquid level is thus of considerable practical importance and requires an appropriate mathematical model of the plant (the system to be controlled) as a starting point. This chapter is concerned with the modeling of hydraulic systems of this kind and with discussion of methods for the verification and validation of a simulation model of a laboratory-scale system involving two interconnected vessels.