DE2.3 - Electronics 2

Imperial College London - Dyson School of Design Engineering

DESE50002 - DE2 Electronics 2 (14 Jan to 25 Mar 2022)

Signals, Systems and Control

Professor Peter Y. K. Cheung

LEARNING OUTCOMES

On successful completion of the module, students should be able to:

analyse and inteprete signals in both time and frequency domains;

analyse and interprete signals in both analogue and digital forms;

use Matlab or similar tools to perform analysis of signals and systems;

extract useful information from signals through analysis, filtering and other form of signal conditioning;

understand system behaviour in terms of poles and zeros and perform analysis and prediction of such systems; employ principles of feedback to improve various performance parameters in an electronic system;

analysis simple feedback systems to establish stability in the system;

design and tune a proportional-integral-differential (PID) controller;

implement both signal processing and control algorithms in an standalone, embedded electronic system using real-time programming techniques.

RECOMMENDED TEXTBOOKS

BP Lathi, Linear Systems and Signals: International edition (£48)
Schaum’s Outline of Feedback and Control Systems (£14)

COURSE MATERIALS

Week 1

Starting	Topics	Resources
14 Jan	Lecture 1 - Introduction (slides, notes) Recording Lecture 2 - Time Domain view of Signals (slides, notes) Recording	Course Planning Doc (PDF) Vclip on discrete vs continuous time signals

Week 2

Starting	Topics	Resources
17 Jan	Lecture 3 - Frequency Domain view of Signals (slides, notes) Recordings 1 2	Vclip on frequency domain view of signals
18 Jan	Lecture 4 - Fourier Transform (slides, notes) Recordings 1 2 Problem sheet 1 (solutions)
19 Jan	Lab 1 - Signal Processing with Matlab	Guidelines on using electronics logbook

Week 3

Starting	Topics	Resources
24 Jan	Lecture 5 - Sampling (slides, notes) Recordings 1 2	Vclip on the Sampling Theorem and aliasing
25 Jan	Lecture 6 - DFT & Windowing (slides, notes) Recording Tutorial 1 - Signals & Spectrums (recording) Problem sheet 2 (solutions)	Vclip on How DFT works Vclip on windowing
26 Jan	Lab 2 - Signal Processing with PyBench	MicroSD card contents (zipped) Various files for Lab 2 (zipped) Various music files (zipped) Microphone & amplfier module (datasheet) online tuning fork Lab 2 solutions (zipped) PyBench board User's Guide PyBench board schematics

Week 4

Starting	Topics	Resources
31 Jan	Lecture 7 - System Analysis & Laplace Transform (slides, notes) Recordings 1 2 Tutorial 2 - Lab 1 & 2 explained (Recording)
1 Feb	Lecture 8 - System Characterization (slides, notes) Recordings 1 2	Vclip on Tacoma bridge collapse Vclip on Millennium bridge
2 Feb	Lab 3 - System Behaviour	Bulb Board circuit schematic Lab 3 solutions (zipped )

Week 5

Starting	Topics	Resources
7 Feb	Lecture 9 - IMU and Data Fusion (slides, notes) Recordings 1 2 Problem sheet 3 (solutions) Problem sheet 4 (solutions)	Vclip on accelerometer Vclip on gyroscope
9 Feb	Lab 4 - IMU & Data Fusion	IMU_3D.zip Lab 4 solutions (zipped )
10 Feb	Tutorial 3 - Lab 3 & 4 Explained (Recordings 1 2)	DRAW week Lab Oral (schedule, Guidelines, marksheet)

Week 7

Starting	Topics	Resources
21 Feb	Lecture 10 - Polling vs Interrupt (slides, notes) Recordings 1 2
22 Feb	Lecture 11 - Discret-time Signals (slides, notes) Recording Tutorial 4 - Problem Sheets 1 & 2 (recording)
23 Feb	Lab 5 - Motor, Polling & Interrupt	Lab 5 solutions (zipped ) TB6612 H-bridge (datasheet )

Week 8

Starting	Topics	Resources
28 Feb	Lecture 12 - Discrete-time Systems (slides, notes) Recording Lecture 13 - Impulse Response and Filtering (slides, notes) Recordings 1 2
1 Mar	Lecture 14 - Beat detection and Dance (slides, notes) Recording Problem sheet 5 (solutions)
2 Mar	Lab 6 - Beat Detection	audio.py (zipped ) Lab 6 solutions (zipped ) beat_detect_0.py (zipped ) Stay'in alive (short, long)

Week 9

Starting	Topics	Resources
7 Mar	Lecture 15 - Feedback Control (slides, notes) Recordings 1 2	Vclip on "What is control?" Vclip on "Control concepts"
8 Mar	Lecture 16- PID Control (slides, notes) Recording Tutorial 5 - About the Challenges	Vclip on "Introduction to PID Control" Vclip on "Example on PID Control" Vclip on "Tuning a PID controller" (long)
9 Mar	The Challenges Lab 7 - Tips and Guidelines	Tips on PID controller code (PDF) pidc.py & pidc2.py (zipped)

Week 11

Starting	Topics	Resources
22 Mar	Final week Lab Oral (Guidelines & Schedule)

LECTURE NOTES AND RECORDINGS

Lecture 1 - Introduction (notes, recording)

Lecture 2 - Time Domain view of Signals (notes, recording)

Lecture 3 - Frequency Domain view of Signals (notes, recordings 1 & 2)

Lecture 4 - Fourier Transform (notes, recordings 1 & 2)

Lecture 5 - Sampling (notes, recordings 1 2)

Lecture 6 - DFT & Windowing (notes, recording)

Lecture 7 - System Analysis & Laplace Transform (notes, recordings 1 2)

Lecture 8 - System Characterization (notes, recordings 1 2)

Lecture 9 - IMU and Data Fusion (notes, recordings 1 2)

Lecture 10 - Polling vs Interrupt (notes, recordings 1 2)

Lecture 11 - Discrete Time Signals (notes, recording)

Lecture 12 - Discrete-time Systems (notes, recording)

Lecture 13 - Impulse Response and Filtering (notes, recordings 1 2)

Lecture 14 - Beat Detection & Dance (notes, recording)

Lecture 15 - Feedback Control (notes, recordings 1 2)

Lecture 16 - PID Controller (notes, recording)

LAB EXPERIMENTS

Lab 1 - Signal Processing with Matlab

Lab 2 - Signal Processing with PyBench

Lab 3 - System Characterization

Lab 4 - IMU & Data Fusion

Lab 5 - Motor, Polling & Interrupt

Lab 6 - Beat Detection

PROBLEM SHEETS

Problem Sheet 1 (solutions)

Problem Sheet 2 (solutions)

Problem Sheet 3 (solutions)

Problem Sheet 4 (solutions)

Problem Sheet 5 (solutions)

Problem Sheet 6 (solutions)

PAST EXAMINATION PAPERS & SOLUTIONS

Past Examination Paper 2017 (solutions)
Past Examination Paper 2018 (solutions)
Past Examination Paper 2019 (solutions)
Past Examination Paper 2020 (solutions)
Past Examination Paper 2021 (solutions)

Team Project Links from previous years (Dancing Segway)

Team Project Specification
Peter Cheung Song by Gabriele D'Amone (DE4 MEng) - MP3, lyrics

Runners up 2017

Winners 2017

From 2018

Datasheet of Components on PyBench Board Mk2

PyBench Board Documentation (user's guide, schematic)
Pyboard documentations
OLED display module (Adafruit 938)
Microphone and amplifier (MAX9813)
IMU - accelerometer & gyroscope (MPU6050)
Motor driver chip (TB6612)

Micropython

Main Micropython website
Pyboard Quick Reference
Tutorials on how to use the Pyboard
Micropython Libraries

Other Useful Resources

Learn Python the Hard Way
Colour codes and preferred values for resistors

This page is maintained by Peter Cheung
Last updated: 29 Mar 2022