Dear Friends,
I am about to tune a Level control on a micrologix PLC.I have learnt so much about PIDs now through my reading(Ron's posts were very helpful!). I understand what Gain, Intergral and Derivative actions does to the output. I read some articles on PID tuning too.. including Ziegler Nichols method and AB documentation etc...
I still cannot understand an easy way to tune the system. Some months back when i tried to tune a PID (again, level) I never got the oscillations as I increased the gain..SO I couldn't find the ultimate gain and natural period.. Is there an easier way to tune the PLCs? or should I just follow WAG (Wild *** Guess)!
Please help me understand..
Thanks..
I am about to tune a Level control on a micrologix PLC.I have learnt so much about PIDs now through my reading(Ron's posts were very helpful!). I understand what Gain, Intergral and Derivative actions does to the output. I read some articles on PID tuning too.. including Ziegler Nichols method and AB documentation etc...
I still cannot understand an easy way to tune the system. Some months back when i tried to tune a PID (again, level) I never got the oscillations as I increased the gain..SO I couldn't find the ultimate gain and natural period.. Is there an easier way to tune the PLCs? or should I just follow WAG (Wild *** Guess)!
Please help me understand..
Thanks..