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How Servo Motors Work

(www.jameco.com)
113 points kaycebasques | 5 comments | 03 Apr 25 19:18 UTC | HN request time: 1.921s | source
1. viraptor ◴[04 Apr 25 03:21 UTC] No.43578011[source]▶
> Understanding the technical aspects of a servo motor and how it works

I don't feel like the article explains that at all. They explain the control signal and what the servo does as a result. The "how" in between is completely missing though. How is that pulse translated? How does the feedback work? What are the safety mechanisms involved?

replies(4): >>43578112 #>>43578408 #>>43585214 #>>43596154 #
2. relaxing ◴[04 Apr 25 03:43 UTC] No.43578112[source]▶
That’s because the control circuit is hidden in a monolithic IC. If you’re really curious, here’s a datasheet for an old fashioned design with a block diagram and theory of operation described that should give you some hints. https://www.meditronik.com.pl/doc/plus/zn409.pdf

If that sort of thing interests you, there’s a whole field of control theory to study.

3. gsf_emergency_2 ◴[04 Apr 25 04:46 UTC] No.43578408[source]▶
https://lastminuteengineers.com/servo-motor-arduino-tutorial...

Interactive diagrams + code

4. MarkSweep ◴[04 Apr 25 17:09 UTC] No.43585214[source]▶
I think this is a pretty good overview of how motors work and how you can write algorithms to control how much torque they generate by varying the PWM:

https://www.actronic-solutions.de/files/actronic/FTPROOT/Fie...

5. johann8384 ◴[05 Apr 25 19:28 UTC] No.43596154[source]▶
Yeah, it's more "How and Why/When to work with Servo Motors"