title: Feedback linearization based control of a variable air volume air conditioning system for cooling applications.
abstract: Design of a nonlinear control system for a Variable Air Volume Air Conditioning (VAVAC) plant through feedback linearization is presented in this article. VAVAC systems attempt to reduce building energy consumption while maintaining the primary role of air conditioning. The temperature of the space is maintained at a constant level by establishing a balance between the cooling load generated in the space and the air supply delivered to meet the load. The dynamic model of a VAVAC plant is derived and formulated as a MIMO bilinear system. Feedback linearization is applied for decoupling and linearization of the nonlinear model. Simulation results for a laboratory scale plant are presented to demonstrate the potential of keeping comfort and maintaining energy optimal performance by this methodology. Results obtained with a conventional PI controller and a feedback linearizing controller are compared and the superiority of the proposed approach is clearly established.
authors.affiliation: Electrical Engineering Department, Indian Institute of Technology Kharagpur, Kharagpur 721302, India. aprevankar@gmail.com
authors.forename: Archana
authors.initials: A
authors.lastname: Thosar
authors.forename: Amit
authors.initials: A
authors.lastname: Patra
authors.forename: Souvik
authors.initials: S
authors.lastname: Bhattacharyya
mesh_terms: D000389:Air Conditioning / Q000295:instrumentation* / Q000379:methods*; D000465:Algorithms; D003198:Computer Simulation; D019544:Equipment Failure Analysis; D005246:Feedback; D016014:Linear Models