SHS2 Robotics · Semester 1 Week 8: Robot Control Principles

Lesson notes

Learning Objectives

Indicator: 2.1.2.LI.2 - Utilise component and system diagrams to design feedback systems for implementing controls in given scenarios.

By the end of the lesson, learners can:

Identify the key components of a feedback system (sensor, controller, actuator, comparator/error detector) from a component diagram and explain the role of each part in words.
Draw a labelled system diagram showing the feedback loop for a given control scenario, correctly placing the sensor, controller, actuator and feedback path.
Convert a written automated solution narrative into a feedback control design, distinguishing where feedback is needed versus where a non-feedback (open-loop) approach would fail.
Compare a non-feedback design from Week 7 with a feedback design for the same scenario, stating at least two advantages of the feedback version.
Justify design choices in a feedback system by explaining what could go wrong if any one component were removed or misplaced, using strategic reasoning.

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Curriculum details

Strand: Principles of Robotic Systems (Strand 1)
Sub-strand: Robot Control Principles (1.2)
Content standard: 2.1.2.CS.1 - 2.1.2.CS.1 Demonstrate knowledge and understanding of design skills in the implementation of controls for automation and robotics. 2.1.2.LO.1 Convert an automated solution narrative into controlled feedback and non-feedback component designs.
Indicator: 2.1.2.LI.2 - Utilise component and system diagrams to design feedback systems for implementing controls in given scenarios.
Suggested placement: Semester 1, Week 8 (Week 8 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 87

Exemplars (from the NaCCA curriculum)

Talk for Learning: Host a focus group discussion on feedback loops as the basic element from which systems are assembled. The facilitator demonstrates the representation of feedback systems using component diagrams and system diagrams.

Assessment (2.1.2.AS.2). The document marks these depth-of-knowledge levels for this indicator: Level 3 Strategic reasoning.

Teaching and Learning Resources:
- Component Diagrams
- System Diagrams
- CAD Tools
- Brainstorming sheets
- Flip Charts
- Online Resources
- Textbooks