DC motor controller 2

[Afroj1]

Hi,

I'm new to the site but I think this is the right section to post my question.
I need to make a thrust controller for a DC motor, and was wondering if anybody had any helpful advice they could give me or point me in the right direction.

Thanks a lot

 

[ScottyUK]

If you want to control thrust then the first logical question might be "How does your motor develop thrust?". Most motors develop torque which makes a shaft rotate. There are som oddities which do produce thrust directly but they are specialised and expensive.

 

[melspuds]

As a veteran of more than 40 years of working with DC motors and generators, which most are with large steel mills. The word thrust means movement of the armature laterally in relationship to the field windings. This is commonly called the " true magnetic center of the motor". This is why most dc motors have sleeve bearings. The device that the motor is driving has to allow for this movement usually with sleeve bearings and a wider first gear, ect. I have seen trusts over +,- 2". If you do not allow for the trusting the will be race to see which is stronger, the driver or the driven. DC motors can be made with very small trust, but they cost $$. I do not know of any type controller to stop or control the thrust. I hope this helps you and good luck.

 

[MikeHalloran]

You can buy DC motor controllers for much less than it costs to make them yourself.

A couple examples came up in this discussion, which you may find interesting.

Radio control racer needs an electrical mentor
thread1528-337857



Mike Halloran
Pembroke Pines, FL, USA

 

[OperaHouse]

In your mind there is only one type of controller, the one you want. And thrust means something obvious to you. First thing every poster needs to learn is to be specific, voltage, current, wattage, HP, etc. If you take so little care in posting it indicates you are not serious about your question. Your next post determines how quickly this thread dies.

 

[mikekilroy]

well said.

http://www.KilroyWasHere<dot>com