12th Grade Motor Control Circuit Lesson Plan (Technical Electrical Engineer)

Topic: Motor Control Circuits

Objectives & Outcomes

• Understand the basic structure and function of the classic and modern control circuit for AC motor.

Materials

• AC motor
• Basic circuit components (resistors, capacitors, diodes)
• Panel meter
• Arduino board
• Circuit board
• Jumper wires
• Digital oscilloscope (optional)

Warm-up

• Ask students to briefly explain what is an AC motor and how it works.
• Show the students the AC motor and demonstrate its operation using the panel meter and the Arduino board.
• Ask the students to find out and write down the following information:

1. The rotation speed of the motor at different inputs (full-load, half-load, no-load),

2. The input voltage and current of the motor at different loads,

3. The motor torque at different loads.

Direct Instruction

• Introduce the concept of control circuit and its purpose: to maintain a desired output by controlling the input.
• Explain the operation of the classic control circuit, including the principle of operation, design and implementation.
• Introduce the modern control circuit, including the principle of operation, design and implementation of the PID (proportional-integral-derivative) controller.
• Demonstrate the operation of the control circuit using the Arduino board, showing how to set up the control parameters and get the desired output.

Guided Practice:

• Have students work in pairs to build their own control circuit using the supplied Arduino board and electronic components.
• Assist students as needed and provide guidance on the circuit design and implementation.
• Verify that each student's circuit is operating as intended, and ensure that students have a basic understand of how the circuit works.

Independent Practice:

• Have students work on a project-based independent practice, where they design and build a simple robot using the control circuit they just learned.
• Encourage students to be creative and think outside the box. Some ideas could be a robot that follows a line, a robot that follows a remote control, or a robot that interacts with its environment in some way.
• Provide guidance and support as needed, and verify that each student's robot is operating as intended.

Closure

• Review the components and functionality of the AC motor control circuit that was just learned.
• Ask students to share their robots and explain how they work.
• Encourage students to reflect on their experience and think about what they learned.

Assessment

• Observe students during the guided practice and independent experimentation to assess their understanding of the concepts.
• Collect and grade their reports on the function of their chosen closed-loop controller.
• Ask a few students to come to the front of the class and demonstrate their controllers, allowing them to explain their choices and the challenges they faced.