复合材料伺服液压缸精准摩擦特性测试方法研究

doi:10.3901/JME.2024.16.338

机械工程学报 ›› 2024, Vol. 60 ›› Issue (16): 338-347.doi: 10.3901/JME.2024.16.338

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复合材料伺服液压缸精准摩擦特性测试方法研究

姜琳琳^1,2, 于天^1,2, 李瑶^1,2, 焦宗夏^1,2,3, 尚耀星^1,3,4

1. 北京航空航天大学自动化科学与电气工程学院北京 100191;
2. 北京航空航天大学飞行器控制一体化技术国家级重点实验室北京 100191;
3. 北京航空航天大学宁波创新研究院宁波 315800;
4. 北京航空航天大学先进航空机载系统工业和信息化部重点实验室北京 100191

收稿日期:2023-10-11 修回日期:2024-04-07 出版日期:2024-08-20 发布日期:2024-10-21
作者简介:姜琳琳,女,1997年出生,博士研究生。主要研究方向为飞机飞控作动系统、全机能量综合管理、电液伺服控制等。E-mail:J15526655847@163.com
尚耀星(通信作者),男,1983年出生,博士,研究员,博士研究生导师。主要研究方向为液压元件轻量化、飞控-液压-刹车-起落架作动与控制、液压传动与电液伺服控制、航空航天机载机电系统。E-mail:syx@buaa.edu.cn
基金资助:
国家重点研发计划资助项目(2018YFB2000702)。

Research on Accurate Friction Characteristics Test Method of Composite Servo Hydraulic Cylinder

JIANG Linlin^1,2, YU Tian^1,2, LI Yao^1,2, JIAO Zongxia^1,2,3, SHANG Yaoxing^1,3,4

1. School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191;
2. Science and Technology on Aircraft Control Laboratory, Beihang University, Beijing 100191;
3. Ningbo Institute of Technology, Beihang University, Ningbo 315800;
4. Key Laboratory of Advanced Aircraft Utility Systems, Ministry of Industry and Information Technology, Beihang University, Beijing 100191

Received:2023-10-11 Revised:2024-04-07 Online:2024-08-20 Published:2024-10-21

摘要/Abstract

摘要： 复合材料伺服液压缸是液压缸轻量化的创新解决方案，能否利用其替代传统液压缸，摩擦特性是核心因素之一，它对电液伺服系统的控制精度和动态性能产生影响。传统液压缸摩擦测试一般采用粗放的启动压力测量法，针对新研制的复合材料液压缸，提出一种宽速高效的精准摩擦测试方法。该方法采用对顶拖动原理，向位置拖动缸施加控制指令，使位置拖动缸拖动被测缸进行变速运动，获得被测缸在宽速范围内的摩擦力、速度实测值，然后拟合摩擦力-速度曲线，辨识获得被测液压缸的摩擦特征参数。提出高频段摩擦力-速度特征点标记方法与变步长宽速拖动方法，提升摩擦特性测试精度。搭建碳纤维液压缸摩擦试验台，验证该测试方法的有效性，测试结果指导碳纤维液压缸筒的刚度匹配设计。

关键词: 液压传动, 伺服液压缸, 摩擦特性, 复合材料, 摩擦测试

Abstract: Composite servo hydraulic cylinder is an innovative solution of hydraulic cylinder weight reduction. Friction characteristics is one of the core factors, which affects the control accuracy and dynamic performance of electro-hydraulic servo system. Traditional hydraulic cylinder friction test adopts imprecise starting pressure measurement method. A wide-speed range and high efficiency precision friction testing method is proposed for a new composite hydraulic cylinder. In this friction test method, the speed of the cylinder under test is driven and controlled by a hydraulic test rig. A friction-velocity feature points marking method and a step size adaption control method are proposed to improve the accuracy of friction characteristic test. The friction-speed relationship curve of the hydraulic cylinder in a wide speed range is obtained. The friction characteristic parameters of the hydraulic cylinder under test are identified by fitting the friction-velocity curve to the Stribeck equation. This friction test method has been applied to a test bench, and the friction characteristics of a carbon fiber hydraulic cylinder has been tested to verify the effectiveness of the test method.

Key words: hydrostatic transmission, servo hydraulic cylinder, friction characteristics, composite materials, friction test

中图分类号:

TB332

姜琳琳, 于天, 李瑶, 焦宗夏, 尚耀星. 复合材料伺服液压缸精准摩擦特性测试方法研究[J]. 机械工程学报, 2024, 60(16): 338-347.

JIANG Linlin, YU Tian, LI Yao, JIAO Zongxia, SHANG Yaoxing. Research on Accurate Friction Characteristics Test Method of Composite Servo Hydraulic Cylinder[J]. Journal of Mechanical Engineering, 2024, 60(16): 338-347.

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复合材料伺服液压缸精准摩擦特性测试方法研究

Research on Accurate Friction Characteristics Test Method of Composite Servo Hydraulic Cylinder

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