| Title |
Robust Control of Variable Speed Refrigeration System by Simplified Model Reference Adaptive Control Applying Pre-filter |
| Authors |
Hyun-Seo Nam ; Seok-Kwon Jeong |
| DOI |
https://doi.org/10.6110/KJACR.2026.38.8.455 |
| Keywords |
프리필터; 강인제어; 간이화 모델 참조 적응 제어기; 가변속 냉동 시스템 Pre-filter; Robust control; Simplified model reference adaptive controller; Variable speed refrigeration system |
| Abstract |
This paper aims to design a simplified model reference adaptive controller (S-MRAC) with pre-filters for robust, high-precision control of a variable-speed refrigeration system (VSRS) amidst model uncertainty and disturbances. The S-MRAC is based on the MIT rule, utilizing parameters that minimize a cost function. It features a simple structure and optimized design parameters. Simulations and experiments demonstrate the S-MRAC's robust control performance against VSRS model uncertainties and disturbances. Compared to a conventional PI (Proportional-Integral) controller, the S-MRAC exhibits a faster settling time, less undershoot, and reduced steady-state error, enabling more precise and robust control. Consequently, the S-MRAC provides robust control that fundamentally eliminates the need for controller maintenance, even with environmental changes affecting the VSRS over time. |