适应多工况的工程机械液压元件载荷集总参数动态响应模型

李晓田; 邹博文; 王安麟

doi:10.7652/xjtuxb202105007

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适应多工况的工程机械液压元件载荷集总参数动态响应模型

更新时间：2025-07-09

- 适应多工况的工程机械液压元件载荷集总参数动态响应模型
- Lumped Parameters Dynamic Response Model of Loads for Hydraulic Components of Construction Machinery Adapted to Multiple Working Conditions
- 西安交通大学学报 2021年55卷第5期页码：56-64
- 作者机构：
  
  同济大学机械与能源工程学院,上海,201804
- 作者简介：
- 基金信息：
  
  : 2020-09-24。作者简介: 李晓田(1983—),男,助理教授。基金项目: 国家重点研发计划资助项目(2018YFC 0810200)
- DOI：10.7652/xjtuxb202105007
  中图分类号： TH137.52
- 网络首发：2021-05-10，
  
  纸质出版：2021
- 稿件说明：
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李晓田, 邹博文, 王安麟. 适应多工况的工程机械液压元件载荷集总参数动态响应模型[J]. 西安交通大学学报, 2021,55(5):56-64.

Lumped Parameters Dynamic Response Model of Loads for Hydraulic Components of Construction Machinery Adapted to Multiple Working Conditions[J]. 2021, 55(5): 56-64.
李晓田, 邹博文, 王安麟. 适应多工况的工程机械液压元件载荷集总参数动态响应模型[J]. 西安交通大学学报, 2021,55(5):56-64. DOI： 10.7652/xjtuxb202105007.

Lumped Parameters Dynamic Response Model of Loads for Hydraulic Components of Construction Machinery Adapted to Multiple Working Conditions[J]. 2021, 55(5): 56-64. DOI： 10.7652/xjtuxb202105007.

摘要

为在系统动力学仿真中动态表达不同工况下工程机械液压元件所受剧烈变化的不确定性载荷

提出一种液压元件载荷集总参数动态响应模型。针对液压元件所受非平稳随机循环载荷

采用小波分解法将其分解为趋势项与随机项

其中非平稳的趋势项用经现场试验数据标定的集总参数模型进行表达

平稳的随机项根据能量等价原则用随机谐和函数进行表达

并由两者合成得到载荷模型; 然后以某型液压挖掘机回转载荷为实例

建立了回转马达的载荷模型

对比某工况下载荷模型的响应与现场试验数据

证明了该载荷模型搭建方法的可行性和有效性。研究结果表明:该载荷集总参数动态响应模型能实现不同工况下液压元件载荷的动态表达

有助于改善工程机械液压系统动力学仿真对复杂多变工况的适应性。

Abstract

To dynamically express the uncertain loads of hydraulic components of construction machinery under different working conditions in system dynamics simulation

a lumped parameters dynamic response model of hydraulic component load is proposed. For the non-stationary random cyclic load of hydraulic components

the wavelet transform method is used to decompose it into a trend term and a random term. The non-stationary trend term is expressed by a lumped parameter model calibrated by data from field tests

and the stable random term is expressed by a random harmonic function based on the principle of energy equivalence

and the load model is synthesized by the above two terms. Then

taking rotary load of a certain type of hydraulic excavator as an example

the load model of the rotary motor is established and the response of the load model is compared with the field test data under a certain working condition to prove the feasibility and effectiveness of the load model construction method. The research results show that the lumped parameter dynamic response model can realize the dynamic expression of the hydraulic component loads under different working conditions

which helps improve the adaptability of the hydraulic system dynamic simulation of construction machinery to complex and variable working conditions.

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