作者：黄敏¹, 马飞扬², 刘广哲², 刘兆庆²

作者单位：1. 苏州大学, 江苏 苏州 215006;
2. 哈尔滨工业大学, 黑龙江 哈尔滨 150080

关键词：EtherCAT技术;机载测试;狭小空间;性能测试

摘要：

针对传统机载测试系统在空间狭小、结构复杂部位难以部署、带宽过低、同步性能较低等问题，结合我国大飞机项目中机载测试系统的实际要求，提出基于实时以太网EtherCAT技术的网络化机载测试系统，同时使用标准的EtherCAT设备搭建实际的测试系统。以该系统为测试平台，根据大飞机测试系统中系统同步性能和带宽的指标要求，对单链、多链等结构及多种条件下的基于EtherCAT网络化机载测试系统同步性能和带宽进行测试，以此为依据对EtherCAT技术应用于机载测试系统可行性进行详细的论证说明。实验结果表明：EtherCAT技术在同步性和带宽方面可满足机载测试系统多方面的要求，并且具有较高的余量，可以应用于我国大飞机项目的机载测试系统。

Research of the feasibility of EtherCAT in the airborne test system
HUANG Min¹, MA Feiyang², LIU Guangzhe², LIU Zhaoqing²
1. Soochow University, Suzhou 215006, China;
2. Harbin Institute of Technology, Harbin 150080, China
Abstract: Traditional airborne test systems typically equip with large amounts of nodes for data acquisition which induce great difficulties for its deployment in the limited spaces with complex components. In addition, some traditional airborne test systems normally have low bandwidth and the poor capability of synchronization. To solve these problems of traditional airborne test systems and meanwhile meet actual demands of the Commercial Aircraft Project of China, a new EtherCAT technology based test system architecture is presented. A physical prototype test system was built upon standard EtherCAT equipment. The detailed evaluation of the feasibility of EtherCAT test system in terms of synchronization accuracy and the bandwidth has been proposed under the single/multi-chain architecture according to demands of the Commercial Aircraft Project of China. Experimental results show that the synchronization accuracy and the bandwidth of EtherCAT can fully meet demands of airborne test system and has great margin. Therefore, it can be implemented by large commercial aircraft project of China.
Keywords: EtherCAT technology;airborne test;limited space;performance evaluation
2019, 45(10):145-152  收稿日期: 2018-12-17;收到修改稿日期: 2019-02-01
基金项目: 国家自然科学基金（61802272）
作者简介: 黄敏(1986-),男,江苏徐州市人,讲师,博士,主要从事自动测试系统研究工作
参考文献
[1] 付强. 网络化机载数据采集系统中嵌入式主站软件的设计与实现[D].西安:西安电子科技大学, 2012.
[2] GROTHOFF C. The free secure network systems group:secure peer-to-peer networking and beyond[C]//Proceedings of First SysSec Workshop. Amsterdam, 2011.
[3] KYO M, ITO H, NAMBA Y. Development on telemetry system for deep borehole sensor network[J]. Sensors, 2010, 143(2):959-964
[4] ELLERBROCK P, WINKELMAN C. Intellibus^TM:network solution for distributed high-performance data acquisition systems[C]//Proceedings of International Telemetering Conference and Technical Exhibition. Las Vegas, 2009.
[5] 薛红霞. 基于EtherCAT的工业以太网主站通信协议的实现[D].哈尔滨:哈尔滨工业大学, 2013.
[6] ZHOU C, XU C, JIN Y, et al. Design of servo drive slaves based on EtherCAT[C]//Proceedings of Chinese Control and Decision Conference, 2015.
[7] WU X, XIE L. On the wireless extension of EtherCAT networks[C]//Proceedings of Conference on Local Computer Networks (LCN), 2017.
[8] YI H, CHOI J. Performance analysis of Linux-based EtherCAT DC synchronization[C]//Proceedings of IEEE International Conference on Advanced Intelligent Mechatronics,2015.
[9] NGUYEN V, TRAN N, LE K et al. A closed-loop stepper motor drive based on EtherCAT[C]//Proceedings of Conference of the IEEE Industrial Electronics Society, 2017.
[10] 康存锋, 李琛玫, 庞艳, 等. 运用PIC18F4520的EtherCAT从站接口电路的设计[J]. 现代制造工程, 2012(3):98-102
[11] 李伟光, 李晓曦, 余漳, 等. 基于EtherCAT实时以太网的伺服运动控制系统设计[J]. 现代制造工程, 2014(3):100-104
[12] 陈灏, 宋宝, 唐小琦. EtherCAT精确时钟同步技术的实现[J]. 组合机床与自动化加工技术, 2014(5):69-72
[13] 王加熙. 机载网络化测试系统网络性能综合评价研究[J]. 中国高新科技, 2017(1):3-6