Integrated Planning and Control for Collision Avoidance Systems

Integrated Planning and Control for Collision Avoidance Systems
Title Integrated Planning and Control for Collision Avoidance Systems PDF eBook
Author Yi, Boliang
Publisher KIT Scientific Publishing
Total Pages 174
Release 2018-08-29
Genre
ISBN 3731507854

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Integrated Planning and Control for Collision Avoidance Systems

Integrated Planning and Control for Collision Avoidance Systems
Title Integrated Planning and Control for Collision Avoidance Systems PDF eBook
Author Boliang Yi
Publisher
Total Pages 162
Release 2020-10-09
Genre Technology & Engineering
ISBN 9781013278716

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Collision avoidance systems like emergency braking assist systems have demonstrated their effectiveness in increasing the safety of vehicle passengers in various studies. To further increase the effectiveness of collision avoidance systems, the exploitation of the lateral free space by evasive maneuvers is being investigated in this book. This work focuses on methods for integrated trajectory planning and vehicle dynamics control in collision avoidance scenarios by combined evasion and braking. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.

Path Planning and Tracking for Vehicle Collision Avoidance in Lateral and Longitudinal Motion Directions

Path Planning and Tracking for Vehicle Collision Avoidance in Lateral and Longitudinal Motion Directions
Title Path Planning and Tracking for Vehicle Collision Avoidance in Lateral and Longitudinal Motion Directions PDF eBook
Author Jie Ji
Publisher Springer Nature
Total Pages 144
Release 2022-06-01
Genre Technology & Engineering
ISBN 303101507X

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In recent years, the control of Connected and Automated Vehicles (CAVs) has attracted strong attention for various automotive applications. One of the important features demanded of CAVs is collision avoidance, whether it is a stationary or a moving obstacle. Due to complex traffic conditions and various vehicle dynamics, the collision avoidance system should ensure that the vehicle can avoid collision with other vehicles or obstacles in longitudinal and lateral directions simultaneously. The longitudinal collision avoidance controller can avoid or mitigate vehicle collision accidents effectively via Forward Collision Warning (FCW), Brake Assist System (BAS), and Autonomous Emergency Braking (AEB), which has been commercially applied in many new vehicles launched by automobile enterprises. But in lateral motion direction, it is necessary to determine a flexible collision avoidance path in real time in case of detecting any obstacle. Then, a path-tracking algorithm is designed to assure that the vehicle will follow the predetermined path precisely, while guaranteeing certain comfort and vehicle stability over a wide range of velocities. In recent years, the rapid development of sensor, control, and communication technology has brought both possibilities and challenges to the improvement of vehicle collision avoidance capability, so collision avoidance system still needs to be further studied based on the emerging technologies. In this book, we provide a comprehensive overview of the current collision avoidance strategies for traditional vehicles and CAVs. First, the book introduces some emergency path planning methods that can be applied in global route design and local path generation situations which are the most common scenarios in driving. A comparison is made in the path-planning problem in both timing and performance between the conventional algorithms and emergency methods. In addition, this book introduces and designs an up-to-date path-planning method based on artificial potential field methods for collision avoidance, and verifies the effectiveness of this method in complex road environment. Next, in order to accurately track the predetermined path for collision avoidance, traditional control methods, humanlike control strategies, and intelligent approaches are discussed to solve the path-tracking problem and ensure the vehicle successfully avoids the collisions. In addition, this book designs and applies robust control to solve the path-tracking problem and verify its tracking effect in different scenarios. Finally, this book introduces the basic principles and test methods of AEB system for collision avoidance of a single vehicle. Meanwhile, by taking advantage of data sharing between vehicles based on V2X (vehicle-to-vehicle or vehicle-to-infrastructure) communication, pile-up accidents in longitudinal direction are effectively avoided through cooperative motion control of multiple vehicles.

Algorithmic Foundations of Robotics XII

Algorithmic Foundations of Robotics XII
Title Algorithmic Foundations of Robotics XII PDF eBook
Author Ken Goldberg
Publisher Springer
Total Pages 931
Release 2021-05-21
Genre Technology & Engineering
ISBN 9783030430917

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This book presents the outcomes of the 12th International Workshop on the Algorithmic Foundations of Robotics (WAFR 2016). WAFR is a prestigious, single-track, biennial international meeting devoted to recent advances in algorithmic problems in robotics. Robot algorithms are an important building block of robotic systems and are used to process inputs from users and sensors, perceive and build models of the environment, plan low-level motions and high-level tasks, control robotic actuators, and coordinate actions across multiple systems. However, developing and analyzing these algorithms raises complex challenges, both theoretical and practical. Advances in the algorithmic foundations of robotics have applications to manufacturing, medicine, distributed robotics, human–robot interaction, intelligent prosthetics, computer animation, computational biology, and many other areas. The 2016 edition of WAFR went back to its roots and was held in San Francisco, California – the city where the very first WAFR was held in 1994. Organized by Pieter Abbeel, Kostas Bekris, Ken Goldberg, and Lauren Miller, WAFR 2016 featured keynote talks by John Canny on “A Guided Tour of Computer Vision, Robotics, Algebra, and HCI,” Erik Demaine on “Replicators, Transformers, and Robot Swarms: Science Fiction through Geometric Algorithms,” Dan Halperin on “From Piano Movers to Piano Printers: Computing and Using Minkowski Sums,” and by Lydia Kavraki on “20 Years of Sampling Robot Motion.” Furthermore, it included an Open Problems Session organized by Ron Alterovitz, Florian Pokorny, and Jur van den Berg. There were 58 paper presentations during the three-day event. The organizers would like to thank the authors for their work and contributions, the reviewers for ensuring the high quality of the meeting, the WAFR Steering Committee led by Nancy Amato as well as WAFR’s fiscal sponsor, the International Federation of Robotics Research (IFRR), led by Oussama Khatib and Henrik Christensen. WAFR 2016 was an enjoyable and memorable event.

Vehicle Steer-by-Wire System and Chassis Integration

Vehicle Steer-by-Wire System and Chassis Integration
Title Vehicle Steer-by-Wire System and Chassis Integration PDF eBook
Author Wanzhong Zhao
Publisher Springer Nature
Total Pages 455
Release 2022-09-24
Genre Technology & Engineering
ISBN 9811942501

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This book focuses on the control-by-wire system, particularly the steer-by-wire system, as well as its control and optimization issues in chassis integration. The steering stability of the vehicle, handling portability, and overall performance of the chassis system are improved by steer-by-wire technology, which includes stability control, road-feeling control, decoupling control, force and displacement coordinated control, and chassis integration optimization. Furthermore, intelligent control goals such as active collision avoidance and active rollover prevention of the vehicle are realized, and the active safety of the vehicle is increased, due to the integrated control of the steer-by-wire system and chassis system. In this book, different types of steer-by-wire systems are introduced, as well as thorough force and displacement control strategies and their implementation in chassis integrated control, ensuring the intelligent and unmanned driving's control reaction speed and precision.

Selected papers from the 2nd International Symposium on UAVs, Reno, U.S.A. June 8-10, 2009

Selected papers from the 2nd International Symposium on UAVs, Reno, U.S.A. June 8-10, 2009
Title Selected papers from the 2nd International Symposium on UAVs, Reno, U.S.A. June 8-10, 2009 PDF eBook
Author Kimon P. Valavanis
Publisher Springer Science & Business Media
Total Pages 519
Release 2011-04-11
Genre Technology & Engineering
ISBN 9048187648

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In the last decade, signi?cant changes have occurred in the ?eld of vehicle motion planning, and for UAVs in particular. UAV motion planning is especially dif?cult due to several complexities not considered by earlier planning strategies: the - creased importance of differential constraints, atmospheric turbulence which makes it impossible to follow a pre-computed plan precisely, uncertainty in the vehicle state, and limited knowledge about the environment due to limited sensor capabilities. These differences have motivated the increased use of feedback and other control engineering techniques for motion planning. The lack of exact algorithms for these problems and dif?culty inherent in characterizing approximation algorithms makes it impractical to determine algorithm time complexity, completeness, and even soundness. This gap has not yet been addressed by statistical characterization of experimental performance of algorithms and benchmarking. Because of this overall lack of knowledge, it is dif?cult to design a guidance system, let alone choose the algorithm. Throughout this paper we keep in mind some of the general characteristics and requirements pertaining to UAVs. A UAV is typically modeled as having velocity and acceleration constraints (and potentially the higher-order differential constraints associated with the equations of motion), and the objective is to guide the vehicle towards a goal through an obstacle ?eld. A UAV guidance problem is typically characterized by a three-dimensional problem space, limited information about the environment, on-board sensors with limited range, speed and acceleration constraints, and uncertainty in vehicle state and sensor data.

COMPUTER INTEGRATED MANUFACTURING

COMPUTER INTEGRATED MANUFACTURING
Title COMPUTER INTEGRATED MANUFACTURING PDF eBook
Author A. ALAVUDEEN
Publisher PHI Learning Pvt. Ltd.
Total Pages 438
Release 2008-08-18
Genre Technology & Engineering
ISBN 8120333454

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This up-to-date and accessible text deals with the basics of Computer Integrated Manufacturing (CIM) and the many advances made in the field. It begins with a discussion on automation systems, and gives the historical background of many of the automation technologies. Then it moves on to describe the various techniques of automation such as group technology and flexible manufacturing systems. The text describes several production techniques, for example, just-in-time (JIT), lean manufacturing and agile manufacturing, besides explaining in detail database systems, machine functions, and design considerations of Numerical Control (NC) and Computer Numerical Control (CNC) machines, and how the CIM system can be modelled. The book concludes with a discussion on the industrial application of artificial intelligence with the help of case studies, in addition to giving network application and signalling approaches. Intended primarily as a text for the undergraduate and graduate students of mechanical, production, and industrial engineering and management, the text should also prove useful for the professionals in the field.