为建筑机器人设计可自主移动的仿蚁腿结构,提升复杂地形适应力。
Design and Dimensional Optimization of Legged Structures for Construction Robots
- 基于运动学建模与工作空间分析,优化腿部摆动阶段尺寸。
- 引入平均操作性概念,数值求解出最优腿段比例。
- 结合虚拟仿真验证,实现多维度运动性能综合优化。
面对复杂非结构化施工环境,轮式与履带式机器人在地形适应性和灵活性方面存在明显局限,难以满足自主作业需求。受蚂蚁自然运动启发,本文提出一种面向施工场景的腿部构型设计与优化方法,旨在提升施工机器人的自主移动能力。论文分析了腿部在摆动与支撑阶段的完整运动性能。首先,基于运动学建模与多维工作空间分析,提出“改进工作空间”概念,并采用图形法优化摆动阶段腿长尺寸;其次,基于速度雅可比矩阵引入“平均操作性”新概念,通过数值求解获得最大化操作性的腿段比例。为克服传统解析方法困难,利用ADAMS进行虚拟样机仿真,探索机器人本体最佳柔韧度与腿段比例的关系。最终获得综合运动性能最优的腿段比例。本研究首次构建了针对施工环境的腿部运动性能多维度定量评估框架,为足式施工机器人在复杂地形中实现自主移动提供结构设计基础。
原文摘要 · Abstract (English)
Faced with complex and unstructured construction environments, wheeled and tracked robots exhibit significant limitations in terrain adaptability and flexibility, making it difficult to meet the requirements of autonomous operation. Inspired by ants in nature, this paper proposes a leg configuration design and optimization method tailored for construction scenarios, aiming to enhance the autonomous mobility of construction robots. This paper analyzes the full operational motion performance of the leg during both swing and stance phases. First, based on kinematic modeling and multi-dimensional workspace analysis, the concept of an "improved workspace" is introduced, and graphical methods are used to optimize the leg dimensions during the swing phase. Furthermore, a new concept of "average manipulability" is introduced based on the velocity Jacobian matrix, and numerical solutions are applied to obtain the leg segment ratio that maximizes manipulability. To overcome the difficulties associated with traditional analytical methods, virtual prototype simulations are conducted in ADAMS to explore the relationship between the robot body's optimal flexibility and leg segment proportions. In summary, the leg segment proportions with the best comprehensive motion performance are obtained. This study presents the first multi-dimensional quantitative evaluation framework for leg motion performance tailored for construction environments, providing a structural design foundation for legged construction robots to achieve autonomous mobility in complex terrains.
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