4781
HiCON Motion Controller / Re: HiCON 7766 Linear Encoder vs. Easy Servo (Leadshine)
« on: April 15, 2018, 08:09:27 PM »
Hi,
great looking project.
Option one which includes enclosing the servo/stepper and ballscrew within the feedback loop has a lot to reccommend it.
You will require that the controller be 'closed loop activated', at a cost and you will have to do some low level
programing to make it work.
Option two is pretty straight forward.
I note the you intend on using steppers albeit closed loop steppers. To be honest I wouldn't do that. The steppers are still
steppers, no amount of feedback makes them any more accurate, faster or more powerful. The manufacturers
of them are playing on your fears about losing steps. If open loop steppers are going to lose steps due to overload
or not having the required torque then closed loop steppers will lose steps for EXACTLY the same reason. The closed loop
will try to correct it but fail because the steppers are OVERLOADED closed loop or not. Given the premium you pay
you are not getting any advantage.
Look instead at genuine AC servos, now you are talking real a real solution and not those Clearpath things, they are way
to expensive for what they are.
Craig
great looking project.
Option one which includes enclosing the servo/stepper and ballscrew within the feedback loop has a lot to reccommend it.
You will require that the controller be 'closed loop activated', at a cost and you will have to do some low level
programing to make it work.
Option two is pretty straight forward.
I note the you intend on using steppers albeit closed loop steppers. To be honest I wouldn't do that. The steppers are still
steppers, no amount of feedback makes them any more accurate, faster or more powerful. The manufacturers
of them are playing on your fears about losing steps. If open loop steppers are going to lose steps due to overload
or not having the required torque then closed loop steppers will lose steps for EXACTLY the same reason. The closed loop
will try to correct it but fail because the steppers are OVERLOADED closed loop or not. Given the premium you pay
you are not getting any advantage.
Look instead at genuine AC servos, now you are talking real a real solution and not those Clearpath things, they are way
to expensive for what they are.
Craig