The Gang of Six in Control Theory | Control Systems in Practice

Check out the other videos in the series:
Part 1 - What Does a Control Engineer Do?    • What Control Systems Engineers Do | C...  
Part 2 - What Is Gain Scheduling?    • What Is Gain Scheduling? | Control Sy...  
Part 3 - What Is Feedforward Control?    • What Is Feedforward Control? | Contro...  
Part 4 - Why Time Delay Matters    • Why Time Delay Matters | Control Syst...  
Part 5 - A Better Way to Think About a Notch Filter    • A Better Way to Think About a Notch F...  
Part 6 - What Are Non-Minimum Phase Systems?    • What Are Non-Minimum Phase Systems? |...  
Part 7 - 4 Ways to Implement a Transfer Function in Code    • 4 Ways to Implement a Transfer Functi...  

When analyzing feedback systems, we can get caught up thinking solely about the relationship between the reference signal and the output. However, to fully understand how a feedback system behaves, we actually need to look at four different transfer functions. And if our system has a feedforward path, then this expands to six – the so-called gang of six transfer functions. The goal of this video is to provide a little intuition around why we need to look at more than just a single transfer function to fully capture the properties of the system.

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Check out these other resources:
Chapter 5 of Control System Design by Karl Johan Åström: https://www.cds.caltech.edu/~murray/c...
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QUARC Real-Time Control Software for Simulink: https://www.quanser.com/products/quar...
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