基于参数自整定模糊PID的飞机液压能源油温控制

Parameters Self-Tuning Fuzzy PID in Temperature Control of Airplane Hydraulic Energy System

摘要:

某飞机液压源的特点是油箱容积大、流量大、功率大,液压油温控制精度在某飞机的液压能源系统中要求较高,该油温控制系统存在时变性、非线性及大时滞；对该系统设计参数自整定模糊PID控制器；利用MATLAB/FUZZY工具箱进行仿真,结果表明该控制器比传统的PID控制器鲁棒性和动态性更好；实验表明在250s时间内,该算法实现对液压油温在60±2℃之间精确的控制,该控制器能较好地处理此类飞机液压源温控。

Abstract:

The oil temperature control of a airplane hydraulic energy system demand higher accuracy,this type of aircraft hydraulic source has characteristics of high power, big flow and large volume of tank. This is an oil temperature control system with larger hysteresis, nonlinearity and time-varying. Considering the feature of this system, a fuzzy parameter self-tuning PID controller was designed. The simulation was done by using the MATLAB/FUZZY tool box. The simulation results show that the controller has better dynamic and robustness than traditional PID controller. Experiments show that the algorithm is implemented on the hydraulic oil temperature at 60±2℃ precise control in 250 s, the controller has better effect in oil temperature control of this type of aircraft hydraulic source.