Chap 7 & 8 Online Revision Tutorial (Concise).pdf


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Chapters 7 & 8 – Online Revision Tutorial (Concise/Moderate/ Detailed)

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1.1.3 Related Past Examination Question
15/16 s2 B5, 15/16 s1 B5, 14/15 s1 B6, 13/14 s2 B5, 12/13 s2 B5, 10/11 s2 B6

1.2 System Block Diagram ← Difference Equation

1.2.1 Worked Example
Example 1
The difference equation of a dicrete-time system is
𝑦𝑦(𝑛𝑛) = 2.5𝑥𝑥(𝑛𝑛) + 0.5𝑥𝑥(𝑛𝑛 − 1) − 0.2𝑥𝑥(𝑛𝑛 − 2)
Draw the system block diagram of the system.

Solution

2.5

Z -1

Z -1

0.5

−0.2

Explanation


Example 2
The difference equation of a dicrete-time system is
𝑦𝑦(𝑛𝑛) = 0.2𝑥𝑥(𝑛𝑛) − 2𝑥𝑥(𝑛𝑛 − 1) + 0.5𝑦𝑦(𝑛𝑛 − 1)
Draw the system block diagram of the system.

Solution

0.2

Z -1
−2

0.5

Z -1

Explanation

