Introduction to feedback
Section five: Dealing with Uncertainty
This chapter is on the theme of linear feedback control, for example with G(s) representing a system, M(s) a compensator and d an input disturbance signal:
This section focuses on managing uncertainty. The world around us is suffused with uncertainty, that is, things we do not know, cannot measure, cannot model or cannot predict. How do we ensure that systems produce the outputs we want, notwithstanding this uncertainty? As befits an introductory course, we avoid formal tools which by and large require substantial and advanced mathematical machinery.
1. Why does handling uncertainty matter?
A number of videos talk through the impact of uncertainty and therefore the importance of feedback within our lives and engineering.
2. MATLAB GUI demonstrating the impact of uncertainty on a tank level system
A summary of the GUI and how it works (PDF, 470 KB)
The GUI (a MATLAB m-file) are available here.
3. MATLAB GUI demonstrating the impact of uncertainty on a heat exchanger system
A summary of the GUI and how it works (PDF, 847 KB)