Development an Adaptive Incremental Fuzzy PI Controller for a HVAC System

Development of an adaptive fuzzy logic controller for HVAC system

An adaptive approach to control a cooling coil chilled water valve operation, called adaptive fuzzy logic control (AFLC), is developed and validated in this study. The AFLC calculates the error between the supply air temperature and supply air temperature set point for air in an air handling unit (AHU) of a heating, ventilating, and air conditioning (HVAC) system and determines optimal fuzzy lo...

Development Method for a Takagi-sugeno Pi-fuzzy Controller

The paper proposes a new development method for a Takagi-Sugeno PI-fuzzy controller meant for a class of plants applicable to the fields of electrical drives or servo systems. The developed fuzzy control systems are quasi-optimal in terms of some quadratic performance indices defined in dynamic regimes with respect to the step modifications of the reference input and of four types of disturbanc...

A Model Reference-based Fuzzy Adaptive Pi Controller for Non-linear Level Process System

This paper proposes a model reference tracking based fuzzy adaptive PI (MRFAPI) controller for non-linear process plant. The second order reference model is proposed for the system. The conical-tank level process system is used as a process plant. The proposed MRFAPI controller is combined with fuzzy logic and conventional variable PI controllers. The on-line estimation of the controller parame...

Tuning methodology for a fuzzy PI controller

A new adaptive PI controller and its application in HVAC systems

The paper concerns the development of a new adaptive PI controller for use in HVAC systems. The process of HVAC control can be described as a first order plus dead time model. A kind of arithmetic of recursive least squares (RLS) with exponential forgetting combined with model matching of a zero frequency method is adopted to estimate the model’s parameters while the system remained in closed l...