I’ve got a couple of Micro Maestro servo controllers on the way, and general phone support thought they would suit my needs, but I thought I would ask if there were any details I’ve overlooked on the forum here.
The application is basically a giant animatronic flower. I’m using Roboteq motor controllers and an Arduino Mega. The motors on the AZ rotation is 80A, there are 2 1000lb linear actuators and a smaller 9A motor. Basically I am driving a 2 ton servo. All actuators are fed back with a 10K pot.
The AZ movement is what I am most concerned about. The Roboteq controller does not handle ramp up, and more importantly ramp down, well for a “servo” that weighs over a ton and takes 20-30 seconds to move 60 degrees. It can move scary fast, but because of the mass involved and the danger to bystanders we have to slow it to a crawl. The flower is basically a 400 lb weight on the end of a 25 foot arm. F=ma, the ramping down “ease-out” is going to be really important here!
Is the Micro Maestro going to be the trick? From what I have read I will send it a position via the serial port, and it will determine the easing and send that via a simulated r/c reciever output to the motor controller. The pots go to the motor controller and I read the position for whatever purpose I like via the rs-232 output on the motor controller.
We have tried rs-232 to the motor controller, in R/C mode we have been able to get better control of the important AZ rotation.
Sound correct? Ideas?