基于模糊自适应PID控制器的自动调压技术  

Pressure self-regulation technology based on fuzzy-adaptive PID controller

作　　者：周家林 敖永平 侯俊林 谭宗欣 孙海涛 

机构地区：[1]中国航发四川燃气涡轮研究院,四川绵阳621000

出　　处：《燃气涡轮试验与研究》2017年第3期53-56,共4页Gas Turbine Experiment and Research

摘　　要：航空发动机模拟过渡态吹风试验是获取全尺寸进气道模拟过渡态出口流场特性的有效方法,试验中为精确控制进气道出口流量,需对抽气压力进行自动调节。提出采用具有控制精度高、鲁棒性强且能缩短系统进入稳态时间等特点的模糊自适应PID控制器,来实现抽气压力的自动调节。与常规PID控制器的对比验证表明,模糊自适应PID控制器能快速响应气流流量变化,抽气压力控制精度高、控制品质良好。自动调压控制系统很好地满足了航空发动机全尺寸进气道模拟过渡态吹风试验的需求,成功获取了发动机起动和加减速过程中进气道的流量特性、总压恢复特性和畸变特性,为发动机起动和加减速控制规律的制定提供了数据依据。Simulation of transient wind blow test of the aircraft engine is an effective way to obtain flow dis-tribution characteristic of the outlet in the full-scale air intake. To accurately control of output mass flow ofair intake, the self-regulation of the air-bleed pressure is needed. Fuzzy-adaptive PID controller which hasthe advantages of high precision, strong robustness and shorter time for the system coming into steady state,was proposed to realize the self-regulation of the air-bleed pressure. Compared with regular PID controller,fuzzy-adaptive PID controller can rapidly respond to the fast-change of airflow, and it has a higher controlaccuracy of the air-bleed pressure, with good control effect. Self-regulation control system of the air-bleedpressure satisfied the requirement of test and acquired the characteristics of intake flow, total pressure re-covery, distortion of engine start-up, acceleration and deceleration process, so to provide test data basis forthe constitution of control rule in the engine start-up, acceleration and deceleration process.

关 键 词：航空发动机 吹风试验 模糊控制 自动调压 PID控制 PLC控制器 过渡态 进气道 

分 类 号：V233.7[航空宇航科学与技术—航空宇航推进理论与工程]