Abstract
A novel theory for determining coefficients for proportional integral (PI) control of heating, ventilating, air-conditioning and refrigeration (HVAC&R) systems is presented. The theory is novel because it focuses on explicitly digital systems whereas conventional theory focuses on digital that use relatively long sampling intervals. A long sampling interval is considered one that permits a complete response of the system to a change in control signal within the sampling interval. The theory is also novel because it is developed from a thermo-fluid engineering perspective, rather than from a control engineering perspective. The theory is applicable to systems with and without storage, i.e., second and first order systems. Process sensitivities for systems with and without storage are identified and defined. The sensitivities are based on open loop system operating characteristics, implementation of a PI control system requires the evaluation of two PI coefficients. The theory enables the evaluation of the ...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Transactions of the Canadian Society for Mechanical Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
