Fuzzy PID Based Temperature Control of Electric Furnace for Glass Tempering Process
M.Sc. Thesis, Addis Ababa University, December 2016
53
Figure 3. 14 PID controller block model components under fuzzy pid block
Fuzzy PID Based Temperature Control of Electric Furnace for Glass Tempering Process
M.Sc. Thesis, Addis Ababa University, December 2016
54
CHAPTER FOUR
4
SIMULATION RESULTS AND DISCUSSIONS
The electric furnace temperature control for glass tempering was modeled, deigned and
analyzed in the materials and methods section of this thesis. This chapter deals with the results
and discussion of MATLAB simulations. It is concerned with the simulation results of the closed
loop control of the system using Fuzzy-PID and PID with MATLAB/SIMULINK. The simulation
is analyzed
by step response, disturbance rejection and parameter variation (robustness) of the
closed loop system. SIMULINK® is a toolbox extension of the MATLAB program. It is a program
for simulating dynamic systems. Simulink has the advantages of being capable of complex
dynamic
system simulations, graphical environment with visual real time programming and
broad selection of tool boxes. Its graphical interface allows selection of functional blocks, their
placement
on a worksheet, selection of their functional parameters interactively, and
description of signal flow by connecting their data lines. Simulink simulates analogue systems
and discrete digital systems.
The Simulink model shown in Figure 3.13 is used to carry out simulation studies and analyze
the performance of the controllers under different operating conditions.
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