Internet of things is deemed as the one of the great revolution after the age of Industrial Revolution.With the development of the communication technology,more and more entities are connected to the communication net...Internet of things is deemed as the one of the great revolution after the age of Industrial Revolution.With the development of the communication technology,more and more entities are connected to the communication network and become one of the elements in the network.Over recent decades,in the area of intelligent transportation,pedestrian and transport infrastructure are connected to the communication network to improve the driving safety and traffic efficiency which is known as the ICV(Intelligent Connected Vehicle).This paper summarizes the global ICV progresses in the past decades and the latest activities of ICV in China,and introduces various aspects regarding the recent development of the ICV,including industry development,spectrum and standard,at the same time.展开更多
从车联网系统架构出发,根据第五代移动通信技术(5th generation mobile communication technology,5G)和车联网发展现状,系统分析基于5G的目标感知、车对外界的信息交换(vehicle to everything,V2X)通信、网络切片以及边缘计算和雾计算...从车联网系统架构出发,根据第五代移动通信技术(5th generation mobile communication technology,5G)和车联网发展现状,系统分析基于5G的目标感知、车对外界的信息交换(vehicle to everything,V2X)通信、网络切片以及边缘计算和雾计算等关键技术,并分析其中所涉及的非正交多址接入、毫米波、软件定义网络和网络功能虚拟化等技术的研究进展,展望5G车联网的发展趋势。展开更多
In this paper, a characteristic model based longitudinal control design for the trans-aerosphere vehicle X-34 in its transonic and hypersonic climbing phase is proposed. The design is based on the dynamic characterist...In this paper, a characteristic model based longitudinal control design for the trans-aerosphere vehicle X-34 in its transonic and hypersonic climbing phase is proposed. The design is based on the dynamic characteristics of the vehicle and the curves it is to track in this climbing phase. Through a detailed analysis of the aerodynamics and vehicle dynamics during this climbing phase, an explicit description of the tracking curve for the flight path angle is derived. On the basis of this tracking curve, the tracking curves for the two short-period variables, the angle of attack and the pitch rate, are designed. An all-coefficient adaptive controller is then designed, based on the characteristic modeling, to cause these two short-period variables to follow their respective tracking curves. The proposed design does not require multiple working points, making the design procedure simple. Numerical simulation is performed to validate the performance of the controller. The simulation results indicate that the resulting control law ensures that the vehicle climbs up successfully under the restrictions on the pitch angle and overloading.展开更多
文摘Internet of things is deemed as the one of the great revolution after the age of Industrial Revolution.With the development of the communication technology,more and more entities are connected to the communication network and become one of the elements in the network.Over recent decades,in the area of intelligent transportation,pedestrian and transport infrastructure are connected to the communication network to improve the driving safety and traffic efficiency which is known as the ICV(Intelligent Connected Vehicle).This paper summarizes the global ICV progresses in the past decades and the latest activities of ICV in China,and introduces various aspects regarding the recent development of the ICV,including industry development,spectrum and standard,at the same time.
文摘从车联网系统架构出发,根据第五代移动通信技术(5th generation mobile communication technology,5G)和车联网发展现状,系统分析基于5G的目标感知、车对外界的信息交换(vehicle to everything,V2X)通信、网络切片以及边缘计算和雾计算等关键技术,并分析其中所涉及的非正交多址接入、毫米波、软件定义网络和网络功能虚拟化等技术的研究进展,展望5G车联网的发展趋势。
基金Supported in part by the National Natural Science Foundation of China (Grant Nos. 90405017, 60736023, 60704014)in part by China Postdoctoral Funds (Grant No. 20060400415)in part by a Cheung Kong Professorship at Shanghai Jiao Tong University
文摘In this paper, a characteristic model based longitudinal control design for the trans-aerosphere vehicle X-34 in its transonic and hypersonic climbing phase is proposed. The design is based on the dynamic characteristics of the vehicle and the curves it is to track in this climbing phase. Through a detailed analysis of the aerodynamics and vehicle dynamics during this climbing phase, an explicit description of the tracking curve for the flight path angle is derived. On the basis of this tracking curve, the tracking curves for the two short-period variables, the angle of attack and the pitch rate, are designed. An all-coefficient adaptive controller is then designed, based on the characteristic modeling, to cause these two short-period variables to follow their respective tracking curves. The proposed design does not require multiple working points, making the design procedure simple. Numerical simulation is performed to validate the performance of the controller. The simulation results indicate that the resulting control law ensures that the vehicle climbs up successfully under the restrictions on the pitch angle and overloading.
