A Better Way to Think About a Notch Filter | Control Systems in Practice

Check out the other videos in the series:
Part 1 - What Does a Control Engineer Do? • What Control Systems E...
Part 2 - What is Gain Scheduling? • What Is Gain Schedulin...
Part 3 - What is Feedforward Control? • What Is Feedforward Co...
Part 4 - Why Time Delay Matters • Why Time Delay Matters...
This video describes an intuitive way to approach notch filter design by thinking about the problem as an inverted, lightly damped, second-order low-pass filter. Then, two additional poles are added to the resulting transfer function to make it realizable and to allow control over the width of the notch. This approach provides a little insight into how each of the terms in the transfer function contribute to the overall shape and location of the notch filter.
Additional Resources:
Varying Notch Filter with MATLAB: bit.ly/2RnJ1bZ
Configure Notch Filter Dynamics with Control System Designer in MATLAB: bit.ly/2RlkpAI
Tuning a Digital Motion Control System: bit.ly/35A8g3m
Getting Started with Control System Designer: bit.ly/35Fz7L4
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