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Feature Requests / Re: Chances of Closed loop?
« on: August 07, 2010, 09:08:05 AM »
If you're using steppers, closed loop won't help you. If you are out of position with a servo, more power is applied to get back to position. If you're out of position with a stepper, it's because it didn't have enough power to begin with, and there isn't any more available to get back to position. The only way it would work would be to slow all the axis down until the out of position axis gets back to position.
But I think an even more important issue is that it would probably require a completely new version of Mach3 to implement it, and that's just not going to happen.
There are probably tens of thousands of Mach3 users using steppers who don't need closed loop. A properly designed stepper system will never lose steps or position.
If you lose steps, you're machine is underpowered. It's as simple as that. Buy the correct motors and drives to give you the performance you want. You don't need closed loop, you need the correct motors and drives to achieve the performance you want.
But I think an even more important issue is that it would probably require a completely new version of Mach3 to implement it, and that's just not going to happen.
There are probably tens of thousands of Mach3 users using steppers who don't need closed loop. A properly designed stepper system will never lose steps or position.
If you lose steps, you're machine is underpowered. It's as simple as that. Buy the correct motors and drives to give you the performance you want. You don't need closed loop, you need the correct motors and drives to achieve the performance you want.