Recently signed up but have read your help here a lot over the years. I am starting a project around the basis of shutting down a rotating cylinder if it's housing moves.
Edit:
Example: My motors spindle becomes jammed unable to move, therefore in free space my motor housing begins to rotate using my spindle as the axis of revolution.
In this case i want to cut off power to the motor through a sensor detecting the rotation of the housing. And limit the rotation i.e brake to avoid any damage.
The specified RPM range is anywhere from 1300-1800RPM kicking out decent torque (30-60Nm at it's maximum RPM)
This is ambitious for myself but is part of my current degree, I am however getting lost as to what sensor to use? I have looked at rotation sensors however most of these don't seem to fit the purpose or am I missing something?
Any help or direction would be much appreciated as i feel like a complete newbie when it comes to this project.
If you need any more information please let me know
say your spindle is rotating at 1k hz... and the housing starts to spin...about the time it spins 100 times, you want to shut it down ?
sound doable.
look at some old rockets, black and white paint.
you can put an IR reflective sensor or opto-reflector on the housing.
it will be solid ON or solid OFF, all the time, except when the housing rotate and the sensor changes state.
as for timing, you could add a 95ms delay to get to your desired 100ms response time.
say your spindle is rotating at 1k hz... and the housing starts to spin...about the time it spins 100 times, you want to shut it down ?
sound doable.
look at some old rockets, black and white paint.
you can put an IR reflective sensor or opto-reflector on the housing.
it will be solid ON or solid OFF, all the time, except when the housing rotate and the sensor changes state.
as for timing, you could add a 95ms delay to get to your desired 100ms response time.
Trying to do something slightly different than what you suggested but my description may have been a bit off. Essentially what i want to do is this:
Example: My motors spindle becomes jammed unable to move, therefore in free space my motor housing begins to rotate using my spindle as the axis of revolution.
In this case i want to cut off power to the motor through a sensor detecting the rotation of the housing. from your description i think an IR reflective sensor could work within the response time specified.
Glad i asked as i was looking at tilt sensors but those don't appear practical.
