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Technical Paper

Approximate Dynamic Programming Real-Time Control Design for Plug-In Hybrid Electric Vehicles

2021-12-31
2021-01-5110
A real-time control is proposed for Plug-in Hybrid Electric Vehicles (PHEVs) based on the optimal Dynamic Programming (DP) trajectories in this study. Firstly, the DP is used to solve the Driving Cycle to obtain the optimal trajectories and controls, and the Model-Based Calibration tool (MBC) is used to generate the optimal Maps for the given optimal trajectories. Secondly, a Feedback Energy Management System (FMES) is built with State of Charge (SoC) as the feedback variable, which takes into account the Charge and Discharge Reaction (CDR) of the battery.
Technical Paper

A Trajectory Planning Method for Different Drivers in the Curve Condition

2021-12-15
2021-01-7006
Lane Centering Control System (LCCS) is a lateral Advanced Driving Assistance System (ADAS) with low acceptance. One of the main reasons is that the centering trajectory can’t satisfy different drivers, which is more obvious in the curve condition. So LCCS adaptive to different drivers needs to be designed. The trajectory planning module is an important part for LCCS. It generates trajectory according to the road information for the vehicle control module to track. This paper uses road information obtained from the scenario established in Prescan, and the trajectory planning method proposed can generate trajectories for different drivers in the curve condition. To achieve the goal, this paper proposes a trajectory planning method which contains lateral path planning and longitudinal speed planning. Firstly, the overall strategy of “road equidistant segments division” is used to describe the road information.
Journal Article

A Potential Field Based Lateral Planning Method for Autonomous Vehicles

2016-09-14
2016-01-1874
As one of the key technologies in autonomous driving, the lateral planning module guides the lateral movement during the driving process. An integrated lateral planning module should consider the non-holonomic constraints of a vehicle, the optimization of the generated trajectory and the applicability to various scenarios. However, the current lateral planning methods can only meet parts of these requirements. In order to satisfy all the performance requirements above, a novel Potential Field (PF) based lateral planning method is proposed in this paper. Firstly, a PF model is built to describe the potential risk of the traffic entities, including the obstacles, road boundaries and lines. The potential fields of these traffic entities are determined by their properties and the traffic regulations. Secondly, the planning algorithm is presented, which comprises three modules: state prediction, state search and trajectory generation.
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