Hello Everyone
I have recently been given a relatively simple control problem to deal with. It could be summed up as a problem where a rotary hydraulic motor was moving something into position and I had feedback from a rotary encoder as to that position. The motor and encoder I/O was fed from and into a Wago PLC. I ended up using an open loop type solution, where the speed of the motor depended on the distance I was from the position setpoint and then eventually stopped the motor at a specified distance away from the setpoint. I have called this OL because I am not reading back the motor speed, I just change the speed and wait for the system to reach the next position for a speed change. This method has worked every time I have run it. I would be grateful for comments on this solution, but this is not really the purpose of this post.
While trying to solve this, I started thinking "I can't be the first person to do this". So I searched for an online repository of standard solutions to simple problems. Or simple control methods based around kinds of equipment used. Does anything like this exist or would it be impossible?
Thanks, looking forward to some interesting discussion
Lee Russell