MEEM1713 Artificial Intelligence Session 2022/2023-2
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Individual Assignment (20%)
MEEM1713 Artificial Intelligence
Session 2022/2023-2
For your individual assignment you are required to work on the two given case studies and submit a three-page (minimum) report for each of them. The case studies describe some real-world problems that could be possibly solved using the knowledge, techniques and tools that are learnt in class. The objective of this assignment is to provide you an exposure to solve actual problems by implementing AI algorithms using scientific software such as Matlab or Python. The assessment rubrics for each of the report is given in Table 1 below. Please use font type Calibri (body) and font size 10 or 11 for the reports. You are not allowed to discuss with your classmates or refer to their solutions or reports. If you are caught copying or referring to your classmate’s solutions or reports, both of you will be penalized.
Table 1
Content |
Mark |
Abstract |
1 |
Introduction & literature review |
1 |
Problem description |
1 |
Problem solution |
3 |
Analysis & Discussion |
2 |
Report format & writing |
2 |
You are required to submit your reports and program files to [email protected] before 03 July
2023.
Case Study 1 (10%)
MEEM1713 Artificial Intelligence
Session 2022/2023-2
While there are numerous organs in the human body that keep us alive and functioning optimally, the heart is undoubtedly one of the most important one. In order to pump roughly a million barrels of blood in an average human lifespan, this organ pumps nonstop from the day we were born and does not stop beating even when we are deep in our slumber. Heart disease is the number one cause of death in Malaysia and the number of deaths caused by heart attacks is ever increasing.
These days even Malaysians who are in their 20’s and 30’s are suffering from heart attacks and it is not a disease of the elderly anymore. The risk factor for heart disease can be divided into non- modifiable and modifiable risk factors. The non-modifiable risk factors include age, sex, and genetic predisposition or family history. The modifiable risk factors are namely pre-existing health issues such as diabetes and hypertension, cigarette smoking habit, hyperlipidaemia, and obesity.
Heart attacks are caused mainly by the narrowing of one or more blood vessels that supply blood to the heart muscle. Once a heart blood vessel is clogged it is just a matter of time for a heart attack to occur. Thus, early diagnosis of heart disease is crucial and can be lifesaving. There are various laboratory, non-invasive and invasive tests that are used to diagnose heart disease. In the laboratory tests for example, blood tests are carried out to determine your risk of heart disease as well as to evaluate other systems of your body that can affect your cardiovascular health.
With the advent of the machine learning technology, heart disease can be potentially diagnosed only by using a patient's particulars. In the literature, a number of studies and research works have reported successful developments and implementations of heart disease diagnosis using machine learning. In the field of machine learning, it is well known that one of the factors that determine the performance of machine learning models is the availability of reliable datasets with sufficient sizes and varieties. One such dataset is the Cleveland dataset (processed.cleveland.data) that can be downloaded from the UCI Machine Learning Repository via the following website:
https://archive.ics.uci.edu/ml/datasets/Heart+Disease
Study and explore the dataset and develop machine learning models that can accurately predict the presence of heart disease in the patient. You may choose to use any machine learning model as the main goal here is high prediction accuracy. Suggest ways to implement the model for real-time heart disease prediction in an actual medical clinic setting.
Case Study 2 (10%)
MEEM1713 Artificial Intelligence
Session 2022/2023-2
Electrical motors are machines that generate mechanical energy from electrical energy. Electrical motors consume a significant proportion of the electricity that is generated worldwide. Often one may directly or indirectly be impacted by the usage of electrical motors and some common applications include car power windows, fans, blowers, power tools, pumps, turbines, alternators, compressors, conveyor belts, car windshield wipers, etc. To effectively produce outputs from electrical motors, practitioners cannot avoid from having proper designs and implementations of controllers. Some common steps in the controller design workflow are:
1. Development of plant mathematical model
2. Controller design and simulation
3. Controller tuning and validation through real-time implementation
Evidently, an accurate mathematical model of an electrical motor is crucial in the design and implementation of a controller for an electrical motor. In the mathematical model of a DC motor [1] below, the manipulated variable is the input voltage, V and the controlled variable is the angular speed, 仙.
L it仙 = −Ri − KmLfi仙 + V
J dt = KmLfi2 − D仙 − CL
where,
i - motor current
仙 - motor angular speed
V - input voltage
CL - load torque
J - moment of inertia, 0.0007046 kgm2
R - total resistance, 7.2 Ω
D - viscous-friction coefficient, 0.0004 Nm/rad/s
L - total inductance, 0.0917 H
Lf - field windings inductance
Km - torque/back EMF constant, KmLf = 0.1236 Nm/wbA
Design and simulate a fuzzy logic control system for DC motor angular speed control using Matlab Simulink. Since this is a regulatory control problem, you are required to ensure that the fuzzy logic controller is able to track a suitable reference signal. Assume that the load torque, CL is an external disturbance and provide an appropriate signal representing the disturbance.
[1] S. Mehta and J. Chiasson, "Nonlinear control of a series DC motor: theory and experiment," in
IEEE Transactions on Industrial Electronics, vol. 45, no. 1, pp. 134-141, Feb. 1998, doi: 10.1109/41.661314.
2023-06-15