基于非线性约束的涡轮压缩机滑模变结构PI控制仿真研究  

Simulation of Sliding Mode Variable Structure PI Control for Turbo Compressor Based on Nonlinear Constraints

作　　者：刘会聪 薛光明[2] 付师星 降雪辉 LIU Huicong;XUE Guangming;FU Shixing;JIANG Xuehui(College of Mechanical and Electrical Engineering,Soochow University,Suzhou 215000,China;Oujiang University,Wenzhou University,Wenzhou 325035,China;College of Mechanical and Electrical Engineering,Shandong Vocational College of Industry,Zibo 256400,China;College of Information Engineering,Zhengzhou University of Industrial Technology,Zhengzhou 451150,China)

机构地区：[1]苏州大学机电工程学院,江苏苏州215000 [2]温州大学瓯江学院,浙江温州325035 [3]山东工业职业学院机电工程学院,山东淄博256400 [4]郑州工业应用技术学院信息工程学院,郑州451150

出　　处：《重庆理工大学学报（自然科学）》2021年第10期94-99,共6页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金项目(51875377)。

摘　　要：为了使燃料电池堆化学反应更加充分,提高发电效率,根据涡轮压缩机驱动原理建立燃料电池堆的涡轮压缩系统模型。基于永磁同步电机驱动数学模型定义控制参数变量,使用高速涡轮压缩机和机电阀控制燃料电池系统中的空气质量流量和压力。针对传统PI控制器进行改进,提出了一种可在不同控制结构上改装的变结构抗饱和策略,设计涡轮压缩机滑模变结构PI控制器。采用Matlab软件对空气质量流量和压力跟踪误差进行仿真,与传统PI控制方法进行对比。结果显示:与PI控制方法相比,涡轮压缩系统采用滑模变结构PI控制方法,空气质量流量和压力跟踪误差较小,控制系统相对稳定。采用滑模变结构PI控制方法,能够提高控制系统的响应速度和跟踪精度,提高燃料电池发电效率。In order to make the chemical reaction of fuel cell stack more sufficient,so as to improve the power generation efficiency.According to the turbine compressor driving principle,the turbine compression system model of fuel cell stack is established.The control parameter variables are defined based on the permanent magnet synchronous motor driving mathematical model.The high-speed turbine compressor and electromechanical valve are used to control the air mass flow and pressure in the fuel cell system.Aiming at the improvement of traditional PI controller,a variable structure anti saturation strategy which can be modified on different control structures is proposed,and the sliding mode variable structure PI controller of turbocompressor is designed.Matlab software is used to simulate the air mass flow and pressure tracking error,which is compared with the traditional PI control method.The results show that compared with the PI control method,the sliding mode variable structure PI control method is adopted in the turbine compression system,the tracking errors of air mass flow and pressure are small,and the control system is relatively stable.The sliding mode variable structure PI control method can improve the response speed and tracking accuracy of the control system and improve the power generation efficiency of fuel cell.

关 键 词：非线性约束 涡轮压缩机 滑模变结构 PI控制 仿真 

分 类 号：TH137[机械工程—机械制造及自动化]