非线性液压弹簧力对电液伺服系统非线性动力学行为影响的研究

中国机械工程 ›› 2015, Vol. 26 ›› Issue (8): 1085-1091,1104.

非线性液压弹簧力对电液伺服系统非线性动力学行为影响的研究

朱勇1,2;姜万录1,2;刘思远1,2;郑直1,2

1.燕山大学河北省重型机械流体动力传输与控制重点实验室,秦皇岛,066004
2.燕山大学先进锻压成形技术与科学教育部重点实验室,秦皇岛,066004

出版日期:2015-04-25 发布日期:2015-09-10
基金资助:
国家自然科学基金资助项目(51475405);国家重点基础研究发展计划(973计划)资助项目(2014CB046405);河北省自然科学基金资助项目(E2013203161,E2013203114)

Research on Influences of Nonlinear Hydraulic Spring Force on Nonlinear Dynamic Behaviors of Electro-hydraulic Servo System

Zhu Yong1,2;Jiang Wanlu1,2;Liu Siyuan1,2;Zheng Zhi1,2

1.Hebei Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control, Yanshan University, Qinhuangdao, Hebei, 066004
2.Key Laboratory of Advanced Forging & Stamping Technology and Science, Ministry of Education,Yanshan University, Qinhuangdao, Hebei, 066004

Online:2015-04-25 Published:2015-09-10
Supported by:
National Natural Science Foundation of China（No. 51475405）;National Program on Key Basic Research Project (973 Program)（No. 2014CB046405）;Hebei Provincial Natural Science Foundation of China（No. E2013203161,E2013203114）

摘要/Abstract

摘要：

探究了非线性液压弹簧力对电液伺服系统动态特征的影响。根据非线性动力学原理，建立了系统的动力学模型。通过理论研究指出,非线性液压弹簧力作用可以用Duffing方程描述。通过数值分析揭示了系统内在的分岔现象及典型非线性动力学行为。通过对实测数据进行深入的分析,揭示了液压弹簧的软硬弹簧特性引起的“跳跃现象”。发现液压弹簧力的非线性作用会引发非线性振动，在系统建模与动态特性研究时应该将其非线性作用考虑在内。

关键词: 电液伺服系统, 非线性液压弹簧力, 跳跃现象, 分岔, 混沌

Abstract:

With electro-hydraulic servo system as the research object, the influences of nonlinear HSF on system dynamic characteristics were explored. Based on the principles of the nonlinear dynamics, a dynamical model of the system was established. Then, a conclusion is indicated: the effects of nonlinear HSF can be described by Duffing equation. The bifurcation phenomenon and typical nonlinear dynamical behaviors which implied within system were revealed through numerical analyses. The measured dynamic data were thoroughly analyzed. The “jump phenomenon” caused by soft or hard spring property was revealed. The results indicate that the nonlinear effects of HSF can cause nonlinear vibration, and it should be taken into account in system modeling and dynamic characteristics research.

Key words: electro-hydraulic servo system, hydraulic spring force(HSF), jump phenomenon, bifurcation, chaos

中图分类号:

TH137
TH113

朱勇, 姜万录, 刘思远, 郑直, . 非线性液压弹簧力对电液伺服系统非线性动力学行为影响的研究[J]. 中国机械工程, 2015, 26(8): 1085-1091,1104.

Zhu Yong, Jiang Wanlu, Liu Siyuan, Zheng Zhi, . Research on Influences of Nonlinear Hydraulic Spring Force on Nonlinear Dynamic Behaviors of Electro-hydraulic Servo System[J]. China Mechanical Engineering, 2015, 26(8): 1085-1091,1104.

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