The intelligent vehicle will play a crucial and essential role in the development of the future intelligent transportation system, which is developing toward the connected driving environment, ultimate driving safety, and comforts, as well as green efficiency. While the decision making, planning, and control are extremely vital components of the intelligent vehicle, these modules act as a bridge, connecting the subsystem of the environmental perception and the bottom-level control execution of the vehicle as well. This short book covers various strategies of designing the decision making, trajectory planning, and tracking control, as well as share driving, of the human-automation to adapt to different levels of the automated driving system.
More specifically, we introduce an end-to-end decision-making module based on the deep Q-learning, and improved path-planning methods based on artificial potentials and elastic bands which are designed for obstacle avoidance. Then, the optimal method based on the convex optimization and the natural cubic spline is presented.
As for the speed planning, planning methods based on the multi-object optimization and high-order polynomials, and a method with convex optimization and natural cubic splines, are proposed for the non-vehicle-following scenario (e.g., free driving, lane change, obstacle avoidance), while the planning method based on vehicle-following kinematics and the model predictive control (MPC) is adopted for the car-following scenario. We introduce two robust tracking methods for the trajectory following. The first one, based on nonlinear vehicle longitudinal or path-preview dynamic systems, utilizes the adaptive sliding mode control (SMC) law which can compensate for uncertainties to follow the speed or path profiles. The second one is based on the five-degrees-of-freedom nonlinear vehicle dynamical system that utilizes the linearized time-varying MPC to track the speed and path profile simultaneously.
Toward human-automation cooperative driving systems, we introduce two control strategies to address the control authority and conflict management problems between the human driver and the automated driving systems. Driving safety field and game theory are utilized to propose a game-based strategy, which is used to deal with path conflicts during obstacle avoidance. Driver's driving intention, situation assessment, and performance index are employed for the development of the fuzzy-based strategy.
Multiple case studies and demos are included in each chapter to show the effectiveness of the proposed approach. We sincerely hope the contents of this short book provide certain theoretical guidance and technical supports for the development of intelligent vehicle technology.
Haotian Cao is currently a Postdoctoral Fellow at the College of Mechanical and Vehicle Engineering, Hunan University, Changsha, China. He received a B.E. in vehicle engineering and a Ph.D. in mechanical engineering from the College of Mechanical and Vehicle Engineering, Hunan University, Changsha, China, in 2011 and 2018, respectively. He was a visiting scholar at Human Factors group, the University of Michigan Transportation Research Institute (UMTRI) from 2016 to 2017. He is a committee member of the Chinese Association of Automation Parallel Intelligence (2018-2022), and a referee of multiple international journals and conferences. He is also a Principal Investigator (PI) of a project funded by Natural Science Foundation of China (NFSC). His interests include trajectory planning and following control for autonomous vehicles, technology related to vehicle dynamical systems, driver behavior modeling, and naturalistic driving data analysis.
Mingjun Li received a B.E in vehicle engineering from Hunan University, Changsha, China, in 2016, where he has been working toward a Ph.D. in mechanical engineering with the College of Mechanical and Vehicle Engineering since 2017. He is also a visiting Ph.D. student with the Waterloo Cognitive Autonomous Driving (CogDrive) Lab at University of Waterloo, Canada from September 2019. His research interests include the shared control strategy, vehicle dynamics and control, driver-assistance systems, and human-driver behaviors analysis for intelligent vehicles.
Song Zhao received a B.E. in vehicle engineering from Hunan University, Changsha, China in 2016. He then studied at the University of Michigan at Ann Arbor and received an MEng. in Global Automotive Manufacturing Engineering. After working in the industry for three years, he is now pursuing his Ph.D. in the Waterloo Cognitive Autonomous Driving (CogDrive) lab at Univesity of Waterloo, Canada. His research interests include vehicle dynamic and control, behavior and motion planning, and advance driver-assistance systems for intelligent vehicles.
Xiaolin Song received her B.E., M.E., and Ph.D. at the College of Mechanical and Vehicle Engineering, Hunan University in 1988, 1991, and 2007, respectively. From 2008 to the present, she has been a professor and a Ph.D. supervisior at Hunan University. She was an advanced visiting scholar of the University of Michigan (Ann Arbor), the University of Waterloo, and the University of Texas at Austin. She is a Vice Chairman of Rules Committee of Formula Student China, as well as an Academic Committee Member of the College of Mechanical and Vehicle Engineering, Hunan University. She has been an independent PI and Co-PI for over five projects of the NSFC, and over ten other provincial and ministerial projects. Her research interests include vehicle active safety, vehicle dynamics control, driver modeling, and human factors in driving safety.
