I am working on linearization of HVAC systems and identifying stable control methods for changes in operating conditions. Most of the practical applications I have seen have a constant controller gain. In industry how common is it to use gain scheduling to accommodate changes in operating condition?
Try my Fractional-order PI and PID controller which takes care of wider frequency spectrum (wider operating points) and more robust due to its flat phase response.
Fractional-order PI^λ D^μ controller design,
2013/9/30
Journal
Computers & Mathematics with Applications
Volume 66 Issue, 5, Pages 639-646
Thank you Dr. El-Khazali,
That was a great help. I am checking the working of FOPI controller. Looks like this can improve the stability of the system over wide operating range.
Do you have any idea about its applications in HVAC system (or any other applications in process industry in current practice)? In my observations HVAC systems are controlled with simplistic control methods due to cost, training and maintenance reasons. Therefore I was checking what are the methods implemented by industry that I can consider in my study.
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