1. Mechatronics Systems Lecture 13

2. 22.1.1: The design process 1.The need From customer/client, identify by market research for potential customer 2.Analysis of the problem Identify problem, analyze it 3.Preparation of a specification Requirements for the product, constraint, criteria Eg-mass, dimension, types and range of motion, accuracy, i/o requirements, power, etc.

3. 22.1.1: The design process (cont.) 4.Generation of possible solution Conceptual designs, literature review on similar problems 5.Selection of a suitable solution Evaluation and selection stage 6.Production of detailed design Production of prototype or mock-ups to determine optimum detail design 7.Production of working drawings Working drawing, circuit diagram,

4. Traditional vs. mechatronics design – bathroom scale Mechanical design – compression of spring, mechanism used to convert motion into rotation of shaft for scale pointer Mechtronics – replaced spring with load cell with strain gage, output to µp for digital display using LED

5. Traditional vs. mechatronics design – central heating system Mechanical design – bimetallic thermostat for closed-loop system, the bending changes as temperature changes to operate on/off switch Mechtronics – using microcontroller-based with thermodiode as sensor

6. Stage 2: Control parameters identification For each case study: Identify process Identify its control parameters Identify sensors and actuators

7. End of Lecture 13