Design on the central air-conditioning controller based on LabVIEW

In modern times, the industrial automation level of industries has become an important symbol to measure the level of modernization. The automation level of central air-conditioning system can also impact on people´s economic life and social standards of living. But since the central air conditioning system is a large-delay, nonlinear time-varying systems, affecting the control results of a simple fuzzy controller. A specific design method of the fuzzy PID controller with parameters self-tuning is given in this article, and the simulation results show that fuzzy PID control with parameter self-tuning can achieve better control requirements. The paper also introduces the hardware and software design of the central air-conditioning temperature and humidity control system in detail. It is proved that using Fuzzy PID control algorithm to control indoor temperature and humidity can as well as conserves energy.