基于滑模变结构控制的EHA系统仿真研究  

Simulation Research on EHA System Based on Sliding Mode Variable Structure Control

作　　者：杨钟鼎 周洁敏[1] 郑罡[1,2] 刘亚[1] 

机构地区：[1]南京航空航天大学民航学院,江苏南京211106 [2]南京军区总医院,江苏南京210002

出　　处：《测控技术》2017年第4期61-65,69,共6页Measurement & Control Technology

基　　金：国防基础预研基金(APSC-NJZX-D201303-J03);南京航空航天大学民航/飞行学院创新基金(MH15Z01);国家自然科学基金(81671667;81471644;81101039;81230032);中国博士后科学基金(2016T90445;2014T71014;2015M570436)

摘　　要：多电飞机功率电传作动系统,采用电能取代飞机能源系统中的液压能、气压能等二次能源。典型的功率电传作动系统主要有电静液作动器(EHA)和电机械作动器(EMA)两种。根据飞机系统运行特点,以EHA为研究对象,对其工作原理与结构特点进行分析,建立了EHA系统中驱动电机、液压泵、作动筒、活塞杆负载等的Simulink线性化仿真模型。同时,针对驱动电机控制精度低的问题,由于传统PID控制的EHA存在舵面控制精度差和频域带宽过窄等问题,故采用了滑模变机构控制对传统PID控制进行改善优化,并进行对比仿真。仿真结果表明,滑模变结构控制的EHA系统的控制质量得到了明显提高。The multi-electric aircraft telex power actuation system uses electricity to replace the secondary energy,such as hydraulic energy and pneumatic energy,etc.in the aircraft energy system.A typical power telex actuation system mainly includes electrical hydrostatic actuator（EHA） and electromechanical actuator（EMA）.According to the operating characteristics of the aircraft system,the EHA is taken as the research object to analyze its working principle and structure characteristics.Simulink linearization simulation models of driving motor,hydraulic pump,actuator,piston rod load in EHA system are established.At the same time,in order to solve the problem of low control accuracy of the drive motor,as well as the problems of poor control accuracy and narrow bandwidth existed in EHA of traditional PID control,the sliding mode control mechanism is used to improve and optimize the traditional PID control,and make simulation and comparison.The simulation results show that the control quality of EHA system with sliding mode variable structure control is improved obviously.

关 键 词：功率电传 EHA 电机控制 滑模变结构控制 

分 类 号：TP33[自动化与计算机技术—计算机系统结构]