The Optimization of PID Control Strategy in VAV System Based on Bacterial Foraging Algorithm

In order to improve the performance of variable air volume (VAV) air conditioning system, considering the control characteristics of the variable air volume air-conditioning system, a PID control strategy based on bacterial foraging optimization are proposed. Firstly construct the nonlinear PID controller and analyze its parameters, then apply the control strategy to optimal adjustment of PID parameters of VAV air conditioning control system. Compared with the traditional PID control, the new PID control strategy improves the performance of the system by digital simulation in the circumstances of MATLAB/Simulink.