让移动机械臂在自驾车实验室中精准抓取物体
Kinematic Analysis and Integration of Vision Algorithms for a Mobile Manipulator Employed Inside a Self-Driving Laboratory
- 用DH建模+逆运动学实现精准操控
- 融合特征检测与单应性估计,实时定位物体姿态
- 适合自动化实验室、化学合成等场景
机器人与自主系统的发展拓展了其在实验室中的应用,涵盖自动化合成、可扩展反应流程以及自驾车实验室(SDLs)中的协作任务。本文提出一种移动机械臂的综合设计,用于辅助人类操作员在自主实验环境中工作。基于Denavit-Hartenberg(DH)约定进行运动学建模,并求解逆运动学以实现精确且适应性强的操作能力。研究重点提升机械臂对纹理物体的可靠抓取能力,作为自主操作任务的关键环节。采用先进的视觉算法实现实时物体检测与位姿估计,指导机械臂完成动态抓取与跟踪任务。本文集成了一种结合特征检测与单应性驱动位姿估计的视觉方法,利用深度信息将物体位姿表示为三维空间内的二维平面投影。该自适应能力使系统能应对物体朝向变化,在多样化环境中支持鲁棒的自主操作。通过实现自主实验与人机协作,本工作推动了下一代化学实验室的可扩展性与可重复性。
原文摘要 · Abstract (English)
Recent advances in robotics and autonomous systems have broadened the use of robots in laboratory settings, including automated synthesis, scalable reaction workflows, and collaborative tasks in self-driving laboratories (SDLs). This paper presents a comprehensive development of a mobile manipulator designed to assist human operators in such autonomous lab environments. Kinematic modeling of the manipulator is carried out based on the Denavit Hartenberg (DH) convention and inverse kinematics solution is determined to enable precise and adaptive manipulation capabilities. A key focus of this research is enhancing the manipulator ability to reliably grasp textured objects as a critical component of autonomous handling tasks. Advanced vision-based algorithms are implemented to perform real-time object detection and pose estimation, guiding the manipulator in dynamic grasping and following tasks. In this work, we integrate a vision method that combines feature-based detection with homography-driven pose estimation, leveraging depth information to represent an object pose as a $2$D planar projection within $3$D space. This adaptive capability enables the system to accommodate variations in object orientation and supports robust autonomous manipulation across diverse environments. By enabling autonomous experimentation and human-robot collaboration, this work contributes to the scalability and reproducibility of next-generation chemical laboratories
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