权凌霄,盛世伟,陈刚.基于联合测控的电液伺服阀动态性能测试研究[J].农业机械学报,2016,47(1):377-382.
Quan Lingxiao,Sheng Shiwei,Chen Gang.Dynamic Performance Test of Electro-hydraulic Servo Valve Based on Joint Test and Control[J].Transactions of the Chinese Society for Agricultural Machinery,2016,47(1):377-382.
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基于联合测控的电液伺服阀动态性能测试研究   [下载全文]
Dynamic Performance Test of Electro-hydraulic Servo Valve Based on Joint Test and Control   [Download Pdf][in English]
投稿时间:2015-05-18  
DOI:10.6041/j.issn.1000-1298.2016.01.052
中文关键词:  电液伺服阀  联合测控  低频控制  动态测试
基金项目:国家自然科学基金项目(51375423)和河北省重点基础研究项目(12962147D)
作者单位
权凌霄 燕山大学 
盛世伟 燕山大学 
陈刚 燕山大学 
中文摘要:针对电液伺服阀动态特性测试精度低、高频控制效果较差的问题,在GB/T 15623.1—2003基础上构建电液伺服阀联合测控平台,利用PLC系统对作动筒进行低频控制,减小了测试原理误差。提出了一种对扫频控制信号进行积分计算来进行频率响应特性分析的计算方法。利用LabVIEW软件采取定采样、变采样率的方法发出信号,实现对扫频信号的精确控制。给出了MOOG D761-2716A型机械反馈伺服阀及MOOG D661-1945E型电位移反馈伺服阀的动态性能实测曲线,试验证明,所提方法对电液伺服阀动态性能测试精度可达±4%。
Quan Lingxiao  Sheng Shiwei  Chen Gang
Yanshan University,Yanshan University and Yanshan University
Key Words:Electro-hydraulic servo valve  joint test and control  low frequency control  dynamic test
Abstract:To improve the precision of electro-hydraulic servo valve’s dynamic state character, a method was proposed by having the excitation signal integrated while calculated the servo valve’s frequency characteristic. In the measurement system, a programmable logic controller (PLC) controlled the cylinder’s displacement with a low frequency, while a displacement sensor detected the response signal with a high frequency, which would reduce the inherent error. The rest automatic operations were completed in the national instruments’ products (PXIe-1071, PXIe-8115 and PXIe-6251). In the software program, a LabVIEW produced control signal with a fixed value of sample and a change frequency, was sent to the PLC system, which would produce the final excitation signal. The valve’s displacement could be got, and the integration of the final excitation signal and the valve’s displacement signal were calculated. Finally, the servo valve’s dynamic state character could be got. At last, the MOOG D761-2716A servo valve’s test curve and the MOOG D661-1945E servo valve’s test curve were illustrated, which meet the correct results well. In the end, several conclusions were drawn: the method of having the excitation signal integrated can be used in the test of electro hydraulic servo valve and it can calculate the dynamic state value accurately. The composite measurement system (PLC+NI) can play a correct role in the test.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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