Download or read book Autonomous Vehicle Maneuvering at the Limit of Friction written by Victor Fors and published by Linköping University Electronic Press. This book was released on 2020-10-23 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Without a driver to fall back on, a fully self-driving car needs to be able to handle any situation it can encounter. With the perspective of future safety systems, this research studies autonomous maneuvering at the tire-road friction limit. In these situations, the dynamics is highly nonlinear, and the tire-road parameters are uncertain. To gain insights into the optimal behavior of autonomous safety-critical maneuvers, they are analyzed using optimal control. Since analytical solutions of the studied optimal control problems are intractable, they are solved numerically. An optimization formulation reveals how the optimal behavior is influenced by the total amount of braking. By studying how the optimal trajectory relates to the attainable forces throughout a maneuver, it is found that maximizing the force in a certain direction is important. This is like the analytical solutions obtained for friction-limited particle models in earlier research, and it is shown to result in vehicle behavior close to the optimal also for a more complex model. Based on the insights gained from the optimal behavior, controllers for autonomous safety maneuvers are developed. These controllers are based on using acceleration-vector references obtained from friction-limited particle models. Exploiting that the individual tire forces tend to be close to their friction limits, the desired tire slip angles are determined for a given acceleration-vector reference. This results in controllers capable of operating at the limit of friction at a low computational cost and reduces the number of vehicle parameters used. For straight-line braking, ABS can intervene to reduce the braking distance without prior information about the road friction. Inspired by this, a controller that uses the available actuation according to the least friction necessary to avoid a collision is developed, resulting in autonomous collision avoidance without any estimation of the tire–road friction. Investigating time-optimal lane changes, it is found that a simple friction-limited particle model is insufficient to determine the desired acceleration vector, but including a jerk limit to account for the yaw dynamics is sufficient. To enable a tradeoff between braking and avoidance with a more general obstacle representation, the acceleration-vector reference is computed in a receding-horizon framework. The controllers developed in this thesis show great promise with low computational cost and performance not far from that obtained offline by using numerical optimization when evaluated in high-fidelity simulation.

Download or read book Reauthorization of the National Highway Traffic Safety Administration written by United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Commerce, Trade, and Consumer Protection and published by . This book was released on 2004 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Machine Learning Optimization and Data Science written by Giuseppe Nicosia and published by Springer Nature. This book was released on 2023-03-08 with total page 639 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two-volume set, LNCS 13810 and 13811, constitutes the refereed proceedings of the 8th International Conference on Machine Learning, Optimization, and Data Science, LOD 2022, together with the papers of the Second Symposium on Artificial Intelligence and Neuroscience, ACAIN 2022. The total of 84 full papers presented in this two-volume post-conference proceedings set was carefully reviewed and selected from 226 submissions. These research articles were written by leading scientists in the fields of machine learning, artificial intelligence, reinforcement learning, computational optimization, neuroscience, and data science presenting a substantial array of ideas, technologies, algorithms, methods, and applications.

Download or read book Technical Literature Abstracts written by Society of Automotive Engineers and published by . This book was released on 2000 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2004 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rollover Side and Rear Impact written by and published by . This book was released on 2004 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Contains the most current work in the areas of rollover, side, and rear impact."--Pref.

Download or read book Rehabilitation R D Progress Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technology for Trainers 2nd edition written by Thomas A. Toth and published by Association for Talent Development. This book was released on 2015-09-18 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turn your training vision into a workable, functional e-learning program. In this fully refreshed second edition, award-winning e-learning expert and technical educator Thomas Toth guides technology-hungry trainers through e-learning development—without the jargon. With brand-new chapters on mobile devices, learning management systems, and e-learning development software, Technology for Trainers illuminates the techniques and processes needed to build any technology-based learning solution. Start speaking intelligently to e-learning designers and other technical experts about how to turn your design vision into a reality. Technology tips throughout the book offer pointers to help you pick up key concepts quickly and gain a better grasp on the decisions that will get you where you want to go. An e-learning glossary at the end consists of more than 400 key terms—from analog to XML—that e-learning experts of all levels will find useful. In this book, you will: Learn how to identify the technical building blocks of an e-learning program. Apply training expertise to e-learning development and examine e-learning-specific software options. Explore the basics of graphics and interface design as well as the basics of Internet technology.

Download or read book SRIM Index written by and published by . This book was released on 1979 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Intelligent Computing written by Kohei Arai and published by Springer Nature. This book was released on 2021-07-12 with total page 1184 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive collection of chapters focusing on the core areas of computing and their further applications in the real world. Each chapter is a paper presented at the Computing Conference 2021 held on 15-16 July 2021. Computing 2021 attracted a total of 638 submissions which underwent a double-blind peer review process. Of those 638 submissions, 235 submissions have been selected to be included in this book. The goal of this conference is to give a platform to researchers with fundamental contributions and to be a premier venue for academic and industry practitioners to share new ideas and development experiences. We hope that readers find this volume interesting and valuable as it provides the state-of-the-art intelligent methods and techniques for solving real-world problems. We also expect that the conference and its publications is a trigger for further related research and technology improvements in this important subject.

Download or read book Annual Index abstracts of SAE Technical Papers written by and published by . This book was released on 2007 with total page 1218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Intermediate Maneuver Induced Rollover Simulation IMIRS and Sensitivity Analysis Final Report written by Andrzej G. Nalecz and published by . This book was released on 1991 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The National Highway Traffic Safety Administration s Rating System for Rollover Resistance written by National Research Council (U.S.). Committee for the Study of a Motor Vehicle Rollover Rating System and published by Transportation Research Board. This book was released on 2002 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explains that the static stability factor is an indicator of a vehicle's propensity to roll over, and that US government ratings for vehicles do not reflect differences in rollover resistance. This report states that the 5-star system should allow discrimination among vehicles and incorporate results from road tests that measure vehicle control.

Download or read book Federal Register written by and published by . This book was released on 2012-10 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the 20th Symposium of the International Association for Vehicle System Dynamics written by International Association for Vehicle System Dynamics and published by . This book was released on 2008 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Structural Life Assessment written by Raouf A. Ibrahim and published by John Wiley & Sons. This book was released on 2017-03-29 with total page 1421 pages. Available in PDF, EPUB and Kindle. Book excerpt: This important, self-contained reference deals with structural life assessment (SLA) and structural health monitoring (SHM) in a combined form. SLA periodically evaluates the state and condition of a structural system and provides recommendations for possible maintenance actions or the end of structural service life. It is a diversified field and relies on the theories of fracture mechanics, fatigue damage process, and reliability theory. For common structures, their life assessment is not only governed by the theory of fracture mechanics and fatigue damage process, but by other factors such as corrosion, grounding, and sudden collision. On the other hand, SHM deals with the detection, prediction, and location of crack development online. Both SLA and SHM are combined in a unified and coherent treatment.

Download or read book Vehicle Dynamics and Control written by Shahram Azadi and published by Elsevier. This book was released on 2021-03-25 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vehicle Dynamics and Control: Advanced Methodologies features the latest information on advanced dynamics and vehicle motion control, including a comprehensive overview of passenger cars and articulated vehicles, fundamentals, and emerging developments. This book provides a unified, balanced treatment of advanced approaches to vehicle dynamics and control. It proceeds to cover advanced vehicle control strategies, such as identification and estimation, adaptive nonlinear control, new robust control techniques, and soft computing. Other topics, such as the integrated control of passenger cars and articulated heavy vehicles, are also discussed with a significant amount of material on engineering methodology, simulation, modeling, and mathematical verification of the systems. This book discusses and solves new challenges in vehicle dynamics and control problems and helps graduate students in the field of automotive engineering as well as researchers and engineers seeking theoretical/practical design procedures in automotive control systems. - Provides a vast spectrum of advanced vehicle dynamics and control systems topics and current research trends - Provides an extensive discussion in some advanced topics on commercial vehicles, such as dynamics and control of semitrailer carrying liquid, integrated control system design, path planning and tracking control in the autonomous articulated vehicle