Lesson Notes By Weeks and Term v4 - SHS 2

Lesson Video

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Performance objectives

• Define electronic components and their roles.
• Differentiate between open-loop and closed-loop control systems.
• Draw and label block diagrams for control systems.
• Describe the function of each block in a control system.

Lesson summary

This lesson introduces the fundamental principles of control systems. Control systems are the "brains" behind many of the electronic devices we use every day, from the simple ceiling fan in our classroom to the complex air conditioning system in a modern building or the traffic lights that manage our city roads. Understanding how they work is a critical step in learning how to design, build, and troubleshoot electronic circuits and systems. We will explore the two main types of control systems, see how they function, and identify them in common appliances found in our homes and communities in Ghana.

Lesson notes

A. What is a Control System?

A control system is a system designed to manage, command, direct, or regulate the behaviour of other devices or systems to achieve a desired result. In simple terms, it's a collection of components that work together to make something happen in a specific, controlled way. Goal: To control a process or a device. Key components: Every control system has an input, a process, and an output. Input: The desired result or the command you give the system. (e.g., turning a fan switch to '3'). Process: The action the system performs to achieve the result. (e.g., the fan's motor turning the blades). Output: The actual result of the process. (e.g., the air movement created by the fan).

Think of a driver controlling a car. Input: The driver's decision to go faster. Process: Pressing the accelerator pedal. Output: The car's speed increases. B. Types of Control Systems

There are two main categories of control systems, based on whether they use feedback or not. Open-Loop Control System

Evaluation guide

• control system principles
• and how to use themCollaborative Learning/T alk for learning: With the use of the internet, engage
• learners in mixed ability groups to undergo the following activ ities:
• Explain control systems.