中国机械工程 ›› 2010, Vol. 21 ›› Issue (9): 1098-1100,1105.

• 机械基础工程 • 上一篇    下一篇

液压挖掘机上车结构参数与液压缸摩擦力参数辨识

龚文;王庆丰
  

  1. 浙江大学流体传动及控制国家重点实验室,杭州,310027
  • 出版日期:2010-05-10 发布日期:2010-05-19
  • 基金资助:
    国家自然科学基金资助项目(50875233);国家863高技术研究发展计划资助项目(2009AA044402) 
    National Natural Science Foundation of China(No. 50875233);
    National High-tech R&D Program of China (863 Program) (No. 2009AA044402)

Parametric Identification of Arm Structure and Cylinder Friction on a Hydraulic Excavator

Gong Wen;Wang Qingfeng
  

  1. The State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou, 310027
  • Online:2010-05-10 Published:2010-05-19
  • Supported by:
     
    National Natural Science Foundation of China(No. 50875233);
    National High-tech R&D Program of China (863 Program) (No. 2009AA044402)

摘要:

在液压挖掘机上车机械臂的动力学分析基础上,提出利用液压缸平稳低速运行时的动力学特性建立与摩擦力无关的挖掘机臂动力学模型,并运用该模型通过离线辨识确定臂的结构参数。基于经典摩擦力模型建立液压缸的辨识模型,通过在线辨识实验得到了液压缸的摩擦力参数,为深入研究液压挖掘机的动力学特性、建立可靠的系统仿真模型及实现臂运动的精确控制提供了依据。

关键词:

Abstract:

On the basis of dynamics analysis of a hydraulic excavator’s arm, when the hydraulic cylinder worked at a low and steady speed, a dynamics model, which was independent on the cylinder friction, was obtained. The model was applied on the off-line parametric identification of the hydraulic excavator’s arm. According to the classical frictional model, an experimental on-line parametric identification was carried out on the excavator. The validation of the method is proved through the experimental data. The results provide a basis for the modeling the real-time simulation system of the excavator.

Key words: hydraulic excavator, dynamics model, hydraulic cylinder friction, parameter identification

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