Your Motor Speed Project

So you have designed and built a mechanical system which had a slow enough output speed so that you could count it and and use the known velocity ratio to work out the motor speed.  This is a quick guide to help you write up the report which is due in on:

Monday 3rd October

First of all the "pre-building" section:

Situation: A quick statement giving the background for this project (copy from notes)

Problem: A quick statement giving the problem to be solved (copy from notes)

Analysis: A break down of the problem to identify the parts of the system which will have to be designed. This should take the form of an analysis statement (copy from notes), a system diagram (copy from notes) and a description of how each of the subsystems/blocks work together.

Performance Criteria: A numbered list of statements of what your system should do in order to solve the problem effectively.  Copy the first three and then add your own.

Ideas: This is the most extensive section. For each of the blocks in your system diagram you need to come up with as many ideas as possible.  Namely the motor control system and the mechanical system.  Here I would expect to see at least two ideas for the motor control and 4 or 5 ideas for the mechanical system showing a clear development in your ideas.  Each idea should have comments which reference back to the Performance Criteria - "+" points and "-" points which show the suitability for each idea.  Mechanical ideas should include a schematic diagram and Velocity Ratio calculations.

Build/Test:  In this section you should answer the questions:

• How did you build your system?
• What equipment did you use (building and testing)?
• How did you test your system?
• What were your results?
• How did this compare to the nominal speed of 3000 rev/min?

You also need to include a schematic diagram of your final mechanical solution, a circuit diagram of your final motor control system, a photo (or two) and all of your calculations clearly showing the Velocity Ratio and the speeds.

Motor Control Circuit

Evaluation: Here you need to refer back to each of your performance criteria.  In turn discuss how successful your system was at fulfilling the performance criteria statement.  If it was not a success, why not?  And what could you do to improve this in the future?  If it was a success, how did you know?  After you have looked at each statement you should write a short conclusion taking into account all of your findings and your overall system success.