{"title":"Practical Predefined-Time Tracking Control of 6-DOF Autonomous Vehicles With Input Quantization and Saturation","authors":"Han Xue, Xiangtao Wang","doi":"10.1002/rob.22590","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>Trajectory tracking control is a fundamental problem in the control of unmanned systems. In practical systems, actuators often have input quantization and saturation constraints, and failing to account for these constraints can affect control convergence time, precision, and even lead to system instability. Therefore, designing a practical predefined time controller specifically for unmanned systems with input quantization and saturation is particularly important. In this study, a novel practical predefined-time control criterion and predefined-time control criterion are proposed. A novel observer with predefined-time convergence is designed which can deal with both input quantization and input saturation. It is efficient without high computational cost, local optima, or complex parameter tuning. It can deal with ship systems with 6 degrees of freedom exposed to external disturbance. The 6 degrees of freedom model provides a more comprehensive representation of the dynamic characteristics. An autonomous vehicle model is used for testing, and the effectiveness of the proposed algorithm has been demonstrated.</p>\n </div>","PeriodicalId":192,"journal":{"name":"Journal of Field Robotics","volume":"42 7","pages":"3454-3467"},"PeriodicalIF":5.2000,"publicationDate":"2025-05-13","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.22590","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
Trajectory tracking control is a fundamental problem in the control of unmanned systems. In practical systems, actuators often have input quantization and saturation constraints, and failing to account for these constraints can affect control convergence time, precision, and even lead to system instability. Therefore, designing a practical predefined time controller specifically for unmanned systems with input quantization and saturation is particularly important. In this study, a novel practical predefined-time control criterion and predefined-time control criterion are proposed. A novel observer with predefined-time convergence is designed which can deal with both input quantization and input saturation. It is efficient without high computational cost, local optima, or complex parameter tuning. It can deal with ship systems with 6 degrees of freedom exposed to external disturbance. The 6 degrees of freedom model provides a more comprehensive representation of the dynamic characteristics. An autonomous vehicle model is used for testing, and the effectiveness of the proposed algorithm has been demonstrated.
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.