What is a Servo Motor and How it Works?

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Have you ever thought about how a robotic vehicle commonly used in a military application with bomb detention is controlled or how metal cutting and forming machines provide precise motion for milling, lathes and bending for metal fabrication or how an antenna positioning system control the precision in azimuth and elevation?

As you will learn within this lesson, servo motor applications are most commonly used in closed loop systems where precise position control commonly found in industrial and commercial applications.

Together with the recently RealPars published video, what is a Stepper Motor and How it Works, and this lesson, you will learn about motion control using different types of motors available, primarily stepper and servo motors.

In this lesson we will discuss what a servo motor is and how it works, so let’s first determine what a servo motor is and examine some unique features of the types of a servo motor and its application.

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#RealPars #ServoMotor

[GregSr]

Great tutorial. Thank-you! I work in the PCB drilling industry where extreme tolerances must be maintained. The six ton drilling machines are required to position a table (weighing several hundred pounds) to within +/- 5 microns (1 micron = 0.000039") and hold that position for 10 milliseconds before the drill bit enters the PCB. The drill bit can be as small as 0.0020" in diameter. Typical drill bits will be between 0.0079" to 0.0200" diameter. Most drilling machines use precision preloaded ball-screws driven by a DC servo. Unlike the motors in this video, the servo motor does not provide position feedback - only a velocity feedback via a tachometer. As heat builds in a ball-screw, it expands lengthwise. That expansion would cause the position feedback from the motor to be less accurate. To solve this, the position feedback is provided by an independent linear digital encoder scale with a resolution of 1 micron and a positional error of 2 microns over a length of 30 inches. The encoder scale is optical and is typically made of glass. Some machines today have evolved to linear motors - no more ball-screws!

[guru]

Came here for DC servo, learned about all the servos! Can't complain, great video!

[shaahkars]

I must congratulate the RealPars team for putting up an excellent reference material that is easy in it's language and clear in it's approach. Companies, entities that invest in educating the consumer towards an informed choice with respect to product knowledge, stand to find themselves at great advantages over time. Please keep up the good work.

[sulaimanalmahrooqi]

"The presentation of everything in this video is just exraordinary. Keep it up. "Said a new subscriber

[mulengamukuka]

Your explanation is gifted..things that seemed hard for me to understand I am finding them easier.

[monkfry]

This video doesn’t surprise me at all. You guys always provide direct and simple explanations on electrical subjects. School would have been much easier and much more interesting back in the day if this format had been available. It’s never too late to brush up on your base knowledge though. 👍

[akashtandel]

Thankyou for clearing my doubts about the Servo Motors. I wish our professor would have shown your video in our lecture. Learning it visually is soo much simpler.
PS: Exam is in 2 days and today I truly learned!

[sundayosaji]

Thank you for adding to my basics. The video is self explanatory.

[ramlakhanization]

You have taught a lot of things at a very short of time. Thanks for.

[CB]

awesome video! Never though there could be so much knowledge packed into one single video! However, I'd like to give a suggestion : Add timestamps, it really helps to navigate.

[rogerdyer]

Golly gee Wally, I SERIOUSLY learn alot from REALPARS!!

[BS-zhtx]

Great topic. Excellent explanation for Mechanical Envineers. 👌👌👌👌👌

[richardackland]

I've been doing motion control programming for years but I learned quite alot from this video. The synchronous and asynchronous parts were helpful

[alishaan]

I recently subscribed your youtube channel. You give ton of information in 4 to 5 mins in the simplest and easy way.

[oktaytekin]

This lesson is very good as everytime.Thank you very much. (Form ın Istanbul )

[themondalsway]

This channel has given a new life to my automation concepts. I am indebted to u for this precise elaboration for free. I will certainly manage time to explore ur courses. Finally, a big fat thank you! ❤🙏

[pansg]

Thank you, your work is beyond precious. You helped me a lot.

[lukekintsukuroi]

enjoyed it very much! will come back for more. Very nicely presented. Well done

[irnesbegic]

This channel is awesome. I work with a lot of servos, induction motors and plc’s

[Durgeshkr]

This is video which i was searching for.
Thanks for uploading such informative video in detail and easily understandable manner.