DC Motor Control: Assessment and Marking Criteria

Learning outcomes for the assessment:

• Knowledge of system modelling and controller design
• Knowledge of MATLAB and Simulink programming

Assessment and marking criteria

The students will be required to:

Submit a report, which meets objectives, format and deadline.

Assessment method by which a student can demonstrate learning outcomes: One single written report

Format for the assessment/coursework (Guidelines on the expected format and length of submission):

The maximum page limit is 8. Graphs and tables may be attached in the appendix, for which there is no page limit. The maximum text size is 12. Please use single line spacing.

In addition to [70?79], additional marks will be awarded to the quality of explanations of the controller design progress and performance analysis. For example, explanation of changing controller parameters and principle of the controller chosen.

All MATLAB programs and results are correct. Details of the controller design are provided and good analysis of the controller performance.

The MATLAB programs and results related to majority of tasks are correct and correct. Details of the controller design progress are provided.

The MATLAB programs and results related to over half of tasks are correct.

The MATLAB programs and results related to 1/3 of tasks are correct.

The programs fail to execute and the presented results are incorrect. However, some good efforts have been made to complete all tasks. Some progress is presented.

Suitable marks will be given based on the answers produced and the effort made.

Consider the rotation speed is the output of the DC motor.

P1. Please provide transfer function and state space model of a DC motor and plot block diagram. (10%)

P2. In MATLAB, plot the step response of the provided DC motor, using both the transfer function and state space model. Please provide MATLAB code or a Simulink model. (10%)

P3. In MATLAB, please design a P, PI and PID controller of the provided DC motor. Please compare the results of different controller and different parameters used of the controller, i.e. compare rising time, settling time, steady state error, overshoot, etc. Please provide MATLAB code or a Simulink model. (40%)

P4. Please design a state feedback controller of the provided DC motor. Please provide the design progress, and the step response of the designed controller. Please analysis the step response of the designed controller. (40%)