Design And Implementation Of Cruise Control Strategy Based On Networked Control

In recent years,the development of the global economy and the advancement of science and technology have promoted the rapid development of the intelligent transportation industry,which causes internet of vehicles and autonomous driving as a hot research issue in recent years.With the development of the new generation of communication technology,the Internet of Vehicles can realize all-round information sharing between the vehicle and people,the vehicle and the base station roadside unit,and the vehicle and internet of vehicles intelligent service platform that more comprehensive,efficient and intelligent comprehensive service can be successfully provided to users.As one of the most basic autonomous driving technologies,cruise driving can provide drivers with safe and stable intelligent assisted driving services to reduce the burden on the driver.However,with the significant increase in car sales and possession,cars have also brought a series of serious social and ecological problems such as safety,congestion,energy and environment.In order to reduce the driver's burden,energy saving and emission reduction,the automotive industry and academia have done extensive research on the cruise control system.In the dissertation,integrated with the networked control and cruise control theory,a novel networked cruise control system architecture is proposed based on internet of vehicles communication architecture of the new generation wireless communication technology.Then,based on the proposed cruise control system architecture,an optimal control strategy for the cruise control system considering delay is designed.Finally,this dissertation builds a prototype of the cruise control vehicle status information monitoring platform,and initially realizes the functions of fixed speed cruise mode vehicle speed setting,multi-vehicle tracking identification in vehicle following mode,and vehicle status information display.The main contents of this paper are as follows:(1)Architecture design of cruise control system based on networked controlCombined with networked control knowledge and cruise control theory,a cruise control system architecture based on networked control is proposed.The system architecture utilizes V2 V communication of the internet of vehicles to expand the acquisition channel of the cruise control system for vehicle state information,and provides an optimized direction for the scalability of the cruise system.(2)Optimized cruise control strategy design considering delayIn the internet of vehicles environment,the cruise control system architecture is used to further describe and analyze the cruise control problem.The discrete time domain vehicle dynamic model is established,and the linear quadratic optimization problem is constructed.The inverse iterative method is used to solve the optimal control strategy to achieve the control of vehicle speed and distance.(3)Cruise control vehicle status information monitoring platform constructionThe cruise control vehicle status information monitoring platform built in this paper has two modes: fixed speed mode and following mode.The fixed speed mode can set the desired vehicle speed,the following mode uses the deep learning target recognition algorithm to identify the driving video,and uses the vehicle state information and the vehicle speed strategy function to calculate the desired vehicle speed.Finally,the vehicle status information and the driving video output interface of the two modes are displayed.