Zhiguo Lu, Yulong Ren, Chong Liu, Siyang Chen, Yiheng Zhao
{"title":"Design, Analysis, and Flexibility Evaluation of a Double-Mode Underactuated Coupled-Drive Omnidirectional Mobile Robot","authors":"Zhiguo Lu, Yulong Ren, Chong Liu, Siyang Chen, Yiheng Zhao","doi":"10.1002/rob.22574","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>Current omnidirectional mobile robots often utilize Mecanum wheels, omnidirectional wheels, or steering wheels, but these technologies present certain operational limitations. This paper investigates a double-mode underactuated coupled-drive omnidirectional mobile robot to improve adaptability and flexibility across various terrains. By designing a double-crank linkage and cross-slider mechanism, the robot achieves omnidirectional translation and in-place rotation modes without using the steering wheel. In the translation mode, the four wheels act as an integrated system, always remaining parallel; in the rotation mode, each wheel can independently rotate around its respective yaw axis, enabling the robot to rotate. This structure significantly reduces the turning radius of the robot. By utilizing the cross slider in conjunction with limit blocks, the relative positions of the double connecting rods are constrained, ensuring the robot maintains a constant posture during omnidirectional movement and resolving the uncertainty and dead-center position issues in the double-crank connecting rod motion process. The omnidirectional mobile robot studied in this paper has applied for a patent. To validate the feasibility of the robot's motion modes, structural analysis, dynamic analysis, and kinematic analysis were conducted, and the stability and flexibility of the robot were verified through physical experiments.</p></div>","PeriodicalId":192,"journal":{"name":"Journal of Field Robotics","volume":"42 7","pages":"3138-3152"},"PeriodicalIF":5.2000,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Field Robotics","FirstCategoryId":"94","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/rob.22574","RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ROBOTICS","Score":null,"Total":0}
引用次数: 0
Abstract
Current omnidirectional mobile robots often utilize Mecanum wheels, omnidirectional wheels, or steering wheels, but these technologies present certain operational limitations. This paper investigates a double-mode underactuated coupled-drive omnidirectional mobile robot to improve adaptability and flexibility across various terrains. By designing a double-crank linkage and cross-slider mechanism, the robot achieves omnidirectional translation and in-place rotation modes without using the steering wheel. In the translation mode, the four wheels act as an integrated system, always remaining parallel; in the rotation mode, each wheel can independently rotate around its respective yaw axis, enabling the robot to rotate. This structure significantly reduces the turning radius of the robot. By utilizing the cross slider in conjunction with limit blocks, the relative positions of the double connecting rods are constrained, ensuring the robot maintains a constant posture during omnidirectional movement and resolving the uncertainty and dead-center position issues in the double-crank connecting rod motion process. The omnidirectional mobile robot studied in this paper has applied for a patent. To validate the feasibility of the robot's motion modes, structural analysis, dynamic analysis, and kinematic analysis were conducted, and the stability and flexibility of the robot were verified through physical experiments.
期刊介绍:
The Journal of Field Robotics seeks to promote scholarly publications dealing with the fundamentals of robotics in unstructured and dynamic environments.
The Journal focuses on experimental robotics and encourages publication of work that has both theoretical and practical significance.