Abstract
This paper describes sliding mode control using a state observer with Kalman filter and feedforward controller for a variable speed refrigeration system (VSRS) to ensure robust control performance against model uncertainty and disturbance. The sliding mode control was designed using a state space model obtained from a practical transfer function model, which was obtained by conducting experiments near operation point. The control input of SMC was achieved from estimation of state variables by a state observer with Kalman filter. Additionally, the feedforward controller was designed to minimize the steady state error due to saturation function. Simulations and experiments were conducted to verify the control performance of the suggested SMC with the feedforward controller and the state observer with Kalman filter. The results of simulations and experiments showed that the proposed controller was capable of robust temperature control for VSRS despite stepwise changes of reference and external heat load.
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: Korean Journal of Air-Conditioning and Refrigeration 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.
