一种三维视觉引导的机械臂自适应抓取方法及系统

By fusing global position and local geometric information into a 3D vision-guided robotic arm grasping method, calculating surface normals and principal curvatures, and generating a grasping compatibility matrix, this method utilizes attention mechanisms and pose regression networks to address the problem of insufficient integration of physical constraints in existing technologies, thereby achieving more accurate and feasible grasping pose evaluation.

CN122143066BActive Publication Date: 2026-07-17LUOYANG INST OF SCI & TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LUOYANG INST OF SCI & TECH
Filing Date
2026-05-09
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies struggle to integrate the physical constraints of robots into the feature extraction and relational reasoning processes of deep learning, resulting in inaccurate pose assessment when facing objects with complex curved surfaces or edge features, and an inability to achieve deep coupling between geometric perception and feasibility.

Method used

By acquiring the 3D point cloud data of the target object, extracting local geometric features, and fusing global position information with neighborhood geometric information, calculating surface normals and principal curvatures, generating a grasping compatibility matrix, and using an attention mechanism and pose regression network to output the optimal grasping pose.

Benefits of technology

This improved the accuracy and success rate of grasping pose, ensuring the physical feasibility and stability of the grasping solution.

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Abstract

本发明提供一种三维视觉引导的机械臂自适应抓取方法及系统,通过改进的注意力机制融合局部几何与全局约束,预测抓取位姿,在提取采样点的局部几何特征后,利用表面法线和主曲率信息,构建包含丰富局部表面形态的键和值向量,利用采样点的全局位置与邻域信息生成查询向量,核心在于利用了一个基于机械臂末端运动学与几何约束的抓取兼容性矩阵,所述矩阵作为先验知识,对通过Q、K计算的初始注意力得分进行调制,生成一个融合了可行性的注意力权重,基于此权重对V进行加权,为每个点生成一个上下文增强特征,通过一个位姿回归网络,并行解算出每个点对应的抓取位姿参数与置信度,并通过排序筛选输出最优抓取方案。
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