THE UNIVERSITY OF NEW SOUTH WALES
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING
NAME:
STUDENT NO: zMNPQSTU
UNIT: LINEAR SYSTEM AND CONTROL
UNIT CODE: MMAN3200
ASSIGNMENT: WATER TANK SYSTEM
INSTRUCTOR:

PARAMETERS
h
max1
=0.2. (Q+S+3)
height of the Tank in m,
h
max2
=0.1. (T+U+1)
height of Tank in m,
b=10. (10-p)
magnitude of the surge in Vs,
d=0.01. (M+N+1)
desired value h
2
in m.

Introduction
Many industrial applications require an accurate control of liquid level, either in order to
generate a constant flow of the liquid or a constant pressure. In this assignment the liquid
used will be water and a linearised model of the water tank system will be assumed.
(Figure 1). Figure 1 The dimensions of the tanks are the horizontal cross section area A and
height hmax. The resistance of the outflow valve is R. These three parameters are constant.
Volumetric flows qi and qo are flows into and out of the tank respectively, while h is water
level
Pre-tasks
1. Determine the transfer function G1(s) of the one-tank system where qi is the input and h is

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