کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5004336 1461195 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research ArticleMultivariable control of the bifurcation and harmonic perturbations to improve the performance of air-handling units
ترجمه فارسی عنوان
تحقیق مقالات کنترل مولکولی اختلالات بی اختلاطی و هارمونیکی برای بهبود عملکرد واحدها
کلمات کلیدی
واحد حمل و نقل هوایی، اختلال هارمونیک، ردیابی، کنترل دوگانه، چرخه محدودیت
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
چکیده انگلیسی


- Nonlinear dynamics and bifurcation in a multivariable model of air-handling unit (AHU).
- Desired tracking objectives in the presence of realistic harmonic perturbations.
- Design of two controllers based on feedback linearization (FBL) and pole-placement.
- Efficiency of FBL controller in bifurcation control and tracking objectives.
- Achieving comfort conditions via suppression of unstable quasi-periodic solutions.

In this research, nonlinear dynamics of an air-ehandling unit (AHU) is studied for tracking objectives, in the presence of harmonic perturbations. Three arbitrary realistic set-paths are considered for the indoor temperature and relative humidity. Two controllers based on feedback linearization (FBL) and pole placement approaches are designed to preserve the dynamic system around the desired tracking paths. It is shown that FBL controller works efficiently in bifurcation control and transforms the quasi-periodic limit cycles into the periodic ones (and consequently comfortable indoor conditions). In addition, FBL controller guarantees suppression of larger periodic limit cycles into the smaller ones, while it requires the lower air and cold water flow rates with less oscillatory behavior (in comparison with the pole-placement controller). However, it is observed that FBL controller fails in bifurcation control when the disturbance frequency increases. Re-tuning the dynamic gains of FBL controller is essential under such conditions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: ISA Transactions - Volume 60, January 2016, Pages 119-127
نویسندگان
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