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3 Lenses on Reality - A Control Systems Approach

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Tags: fouriercontrol-systemslaplacez-transformroot-locuscontroller-designtransfer-functions

This video seeks to give an overview of three common mathematical tools but from an Engineering context. The Laplace, Fourier and Z-Transforms are often taught individually but, when used together, they allow a much clearer picture of a system. Here, the application is about control systems with an example of a car suspension system.

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4.88 Overall score*

123 Rank

12 Votes

8 Comments

Comments

4.8

The block diagrams were a great source of clarity

4.2

A lot of this video goes into the what instead of the why, and just feels very artificial, partially due to the robotic voice. None of the visuals felt particularly helpful, but at least they were on topic and would be helpful if they were explained better. The creator of the video does have a high level understanding of what each of these transforms do, but the communication to the viewer is not as adept.

3.5

This video was okay, but I found it a little hard to follow, and I suspect the target audience will also find it a little hard to follow. There is a lot of information being stated, but not much in terms of trying to provide actual understanding or insight. Also, I found the narration a bit off-putting. It was a little too fast and monotonous and I think it would have been much nicer to have a real human doing the narration.

6.2

Emphasize their relations more

I’ve studied both Laplace and Fourier transforms so thought this video wouldn’t be too hard to follow, but it was way harder to follow than I thought. The animations on screen were barely explained at all, so you could only follow them if you already knew what you were talking about, which would kind of defeat the point of watching the video in the first place. I think the video could be improved by spending more time describing what exactly is on screen. I think some of the images with equations were a bit confusing too. For example in the definition of the Z transform, I had no idea what the relationship between most of the things on screen was. There was no clarification for most of it. Again, it might make sense to somebody who is already intimate with the topic, but when you are that familiar with the topic there is little reason to watch the video. Also, I know voiceovers are tough, but I think using a real voice would make for a better experience than an AI voice.

5.1

The video is quite simple in presentation. The concept of combining the Z-transform, Laplace, and Fourier series into a combined force is promised at the beginning of the video but not fully resloved. Instead it explains the three transforms at a high level using and how it relates to control systems and how the system can be modelled using the transforms.

This video is aimed at people who already know about these transforms, I dont think it would give any major new insights to someone already familiar with the topic.

Some positives. Simple visuals and I enjoyed the suspension on the simulated road.

Overall good video but nothing ground breaking.

Wasn’t too interesting, cause of AI voice. Also didn’t have many why questions. Visuals are good.

Well done overall, motivation was clear, the topic not necessarily novel but did explain how the three methods when used together provide a deeper understanding. I would have liked better explanation of the frequency responses in context of the imaginary vehicle IE under damped/over damped and how to use the 3 control systems to optimize for 90% rise time, overshoot, etc