基于参数辨识的燃气轮机燃料阀控制系统建模与仿真  

Modeling and Simulation of Gas Turbine Fuel Valve Control System based on Parameter Identification

作　　者：张嘉耕 戴义平[1] 王宇兴 公天正 ZHANG Jiageng;DAI Yiping;WANG Yuxing;GONG Tianzheng(School of Energy and Power Engineering,Xi′an Jiaotong University,Xi′an,China,Post Code:710049)

机构地区：[1]西安交通大学能源与动力工程学院,陕西西安710049

出　　处：《热能动力工程》2024年第11期178-185,共8页Journal of Engineering for Thermal Energy and Power

基　　金：国家科技重大专项(J2019-V-0014-0109)。

摘　　要：针对国内燃气轮机气体燃料阀长期依赖国外进口、缺乏自主设计及验证能力的问题,本文以燃料阀控制系统执行机构为对象,推导建立了数学模型,根据实验数据使用最小二乘算法对模型参数进行辨识,得到燃料阀控制系统执行机构的传递函数,随后利用传递函数模型对执行机构以及燃料阀控制系统的动态响应特性进行了仿真分析。将仿真机算的结果与实验结果进行对比,得到仿真与实测结果的整体误差小于1%,验证了所建立执行机构传递函数模型的准确性;位置伺服控制系统在阶跃信号作用下的响应时间为1.2 s,稳态误差小于1%,系统具有一定的抗干扰性;对系统进行频域分析,控制系统在2.5 Hz内的动态响应良好。Aiming at the problem that the domestic gas turbine gas fuel valve relies on foreign imports for a long time and lacks the ability of independent design and verification,this paper takes the actuator of the fuel valve control system as the object,deduces and establishes its mathematical model,and uses the least squares algorithm to identify the model parameters according to the experimental data.The transfer function of the actuator of the fuel valve control system is obtained,and then the dynamic response characteristics of the actuator and the fuel valve control system are simulated and analyzed by using the transfer function model.Comparing the simulation results with the experimental results,the overall error between the simulated and the measured results is less than 1%,which verifies the accuracy of the established actuator transfer function model.The response time of the position servo control system under the action of step signal is 1.2 s,and the steady-state error is less than 1%.The system has certain anti-interference performance.The frequency domain analysis of the system shows that the dynamic response of the control system is good within 2.5 Hz.

关 键 词：燃气轮机 燃料阀 参数辨识 最小二乘法 建模仿真 

分 类 号：TK47[动力工程及工程热物理—动力机械及工程]