Shaft Friction Control: Simple Solutions

[mechit]

TL;DR

Shaft friction control

Hello Everyone,

I'm working on a future mechanical structure with a rotating shaft. In this project, I should be able to control the resistance on the shaft but instead of adding some extra weights on the shaft to increase inertia, I don't have any ideas. Does anyone have an idea of simple instrumentation (sort of a brake) to add on the shaft so that it helps to increase resistance on it?

Thanks a lot

 

[Baluncore]

Welcome to PF.
How much torque do you require?
How fast does the shaft rotate?
You could use a DC motor with a continuous current to generate the torque.
You could use a conductive disk with a fixed magnet to give eddy current braking.
Or go old style ... https://en.wikipedia.org/wiki/Prony_brake

 

[mechit]

Thank you for your reply!
Actually, I don't have a specification for the torque because it is a shaft that rotates thanks to the wind. A blade will be fixed on it.
I will look at your recommendation
Thanks a lot

 

[Baluncore]

What is the radius = length of one blade ?
What is the wind speed ?

 

[AZFIREBALL]

Is it vertical or horizontal?
Are you wanting to stop its rotation from a high speed or just slow it? What is the approximate weight of the rotating mass?

 

[jack action]

Does anyone have an idea of simple instrumentation (sort of a brake) to add on the shaft so that it helps to increase resistance on it?

I don't understand, a brake is a "sort of brake". Sure, there are many models, but they pretty much all work the same.

I should be able to control the resistance on the shaft but instead of adding some extra weights on the shaft to increase inertia, I don't have any ideas.

If increasing inertia is what you are looking for, you don't have to add extra weight, you can just move the ones already there away from the center of rotation.

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