# Introduction to feedback, its importance and impact

These sections give an introduction to feedback. Why is feedback needed? What framework do I need to analyse feedback loops and behaviour? How can tools such as MATLAB be used to support this analysis and finally an introduction to basic feedback compensation laws such as proportional and integral. Use the left hand toolbar to access the resources.

- Uncertainty and role of feedback
- What is feedback and its impact?
- Block diagrams
- Offset dependence on feedback
- Simple feedback designs
- Chapter on use of MATLAB for control

It is implicit in several of these chapters that students have core competence in some mathematical topics such as polynomials, roots, complex numbers, exponentials and Laplace. More information on these can be found in the Mathematics theme of the left hand toolbar.