中国机械工程 ›› 2026, Vol. 37 ›› Issue (8): 1811-1823.DOI: 10.3969/j.issn.1004-132X.2026.08.001
• 先进流体系统设计与优化(续) •
姜宏达1,2, 陈俊翔1,2, 艾超1,2(
), 孔祥东1,2
收稿日期:2025-05-12
出版日期:2026-08-25
发布日期:2026-09-17
通讯作者:
艾超
作者简介:姜宏达,男,2000年生,博士研究生。研究方向为液压机械臂运动控制。发表论文4篇
基金资助:
JIANG Hongda1,2, CHEN Junxiang1,2, AI Chao1,2(
), KONG Xiangdong1,2
Received:2025-05-12
Online:2026-08-25
Published:2026-09-17
Contact:
AI Chao
摘要:
针对液压挖掘机在复杂动态环境中自主作业难以实现高精度路径跟踪的问题,提出一种基于时变引导向量场(GVF)的层级控制架构。构造归一化时变引导向量场作为上层规划器,基于欧氏距离函数设计收敛项以驱动系统全局渐近收敛至参数化目标路径,在此基础上引入动态前馈补偿项,结合零空间投影机制消除时变路径几何形变对机械臂跟踪性能的影响,确保其对目标路径的动态跟踪能力。此外,通过Lyapunov稳定性理论证明系统在模型不确定性与外部扰动下的最终有界性,并推导扰动强度与齿尖轨迹偏差间的定量关系,进一步地,提出奇异点规避机制以确保挖掘机齿尖运动轨迹对应的向量场在全局工作空间解的唯一性和连续性。针对阀口独立液压系统,下层控制器设计进油流量-回油压力协同控制策略,对上层规划器输出指令实现高精度跟踪的同时,提高了系统能效。最后通过仿真验证了所提算法的有效性。
中图分类号:
姜宏达, 陈俊翔, 艾超, 孔祥东. 基于时变引导向量场的阀口独立液压挖掘机路径跟踪控制[J]. 中国机械工程, 2026, 37(8): 1811-1823.
JIANG Hongda, CHEN Junxiang, AI Chao, KONG Xiangdong. Time-varying Guidance Vector Field-based Path Following Control for Hydraulic Excavators with Independent Metering[J]. China Mechanical Engineering, 2026, 37(8): 1811-1823.
| 动臂关节/(°) | 10 | 齿尖速度/(m·s | 0.3 |
|---|---|---|---|
| 斗杆关节角/(°) | -40 | 收敛增益 | 20.5 |
| 铲斗关节角/(°) | -30 | 离散采样点数 | 1000 |
| 固定铰接点 | (0,0) | 定义5 | |
| 轨迹中心 | (2.8,-0.7) | 定义6 | |
| 正方形边长/m | 0.8 | 流量控制器 | (180,15,0) |
| 倒角半径/m | 0.8/7 | 压力控制器 | (120,10,0) |
表1 参数初始值设置
Tab.1 Parameter initial value settings
| 动臂关节/(°) | 10 | 齿尖速度/(m·s | 0.3 |
|---|---|---|---|
| 斗杆关节角/(°) | -40 | 收敛增益 | 20.5 |
| 铲斗关节角/(°) | -30 | 离散采样点数 | 1000 |
| 固定铰接点 | (0,0) | 定义5 | |
| 轨迹中心 | (2.8,-0.7) | 定义6 | |
| 正方形边长/m | 0.8 | 流量控制器 | (180,15,0) |
| 倒角半径/m | 0.8/7 | 压力控制器 | (120,10,0) |
| 动臂关节角/(°) | 20 | 齿尖速度/(m·s | 0.3 |
|---|---|---|---|
| 斗杆关节角/(°) | -45 | 收敛增益 | 18 |
| 铲斗关节角/(°) | -30 | 离散采样点数 | 2000 |
| 固定铰接点 | (0,0) | 定义5 | |
| 轨迹中心 | (2.8,-0.7) | 定义6 | |
| 圆形半径/m | 0.3 | 流量控制器 | (150,21,0) |
| 路径时变速度/(m·s | 0.025 | 压力控制器 | (115,18,0) |
表2 参数初始值设置
Tab.2 Parameter initial value settings
| 动臂关节角/(°) | 20 | 齿尖速度/(m·s | 0.3 |
|---|---|---|---|
| 斗杆关节角/(°) | -45 | 收敛增益 | 18 |
| 铲斗关节角/(°) | -30 | 离散采样点数 | 2000 |
| 固定铰接点 | (0,0) | 定义5 | |
| 轨迹中心 | (2.8,-0.7) | 定义6 | |
| 圆形半径/m | 0.3 | 流量控制器 | (150,21,0) |
| 路径时变速度/(m·s | 0.025 | 压力控制器 | (115,18,0) |
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