Crrc Zhuzhou Electric Locomotive Research Institute Co., Ltd.

New Jersey Institute of Technology

Zhuzhou Csr Times Electric Co., Ltd.

Gaohua Chen

Jianghua Feng

Rongjun Ding

Nirwan Ansari

Mengchu Zhou

Roberto Rojas-Cessa

Jun Tang

Tairan Zhang

Shu Cheng

Chaoqun Xiang

Liang Han

Yijing Xu

Shuying Guo

Mina Taheri

Dajun Wang

Jianghong Li

Wei Xu

Huaguo Chen

Qiang Fan

Benyu Xin

Kuisen Tian

A method, a device and a system for safely and reliably performing real-time speed measurement and continuous positioning are provided. With the method, inertial navigation data from an inertial navigation signal source arranged in a train is detected, and correction data from a correction signal source is detected. In a case that no correction data is detected, a current speed and a current position of the train is determined based on the inertial navigation data, and in a case that the correction data is detected, the inertial navigation data is corrected with the correction data, and a current speed and position of the train are determined based on the corrected inertial navigation data. Therefore, even in the case that no correction data is detected, the real-time speed measurement and continuous positioning can be performed safely and reliably based on the inertial navigation data.

Safe and reliable method, device, and system for real-time speed measurement and continuous positioning

A long stator power supply section and a long stator linear motor for a maglev train, comprising a plurality of stator core modules () and stator coils () equal in number to the stator core modules (). Each stator of the plurality of stator coils () is correspondingly embedded into one stator core module of the stator core modules () respectively; joints are arranged at both ends of each stator coil (); the stator coils () on every two adjacent stator core modules () are detachably connected by means of the joints; and the joints of the stator coils () on the stator core modules () at both ends are connected to a feeder cable.

Long stator power supply section and long stator linear motor for maglev train

A method and a system for rail transit communication. The method includes: selecting a second target FSO transceiver from the FSO transceivers that are currently located within a signal coverage of a target FSO base station, in response to detecting that a first target free-space-optics (FSO) transceiver moves out of the signal coverage of the target FSO base station when data communication between the target FSO base station and the target user terminal is performed via the first target FSO transceiver, where the target FSO base station is one of the FSO base stations located on the rail; and maintaining the data communication between the target FSO base station and the target user terminal, by using the second target FSO transceiver. Handover among the base stations is reduced for user equipment, data communication rate is increased, and communication experience of passengers can be improved.

Rail transit communication method and system

A space vector based synchronous modulating method includes sampling a frequency f of a reference voltage vector; checking a relational table of frequencies and carrier wave ratios by the frequency f so as to obtain a carrier wave ratio N; obtaining a passing angle &#x394;&#x3b8; of the reference voltage vector by &#x394;&#x3b8;=2&#x3c0;/N; obtaining a modulating angle &#x3b8;m of the reference voltage vector by &#x3b8;m=(Nth&#x2212;1)&#xd7;&#x394;&#x3b8;, in which Nth indicates which time of sampling; obtaining a modulating ratio m according to a modulating ratio-frequency curve; accounting and synthesizing an output angle of three basic voltage vectors of the reference voltage vector according to the modulating angle &#x3b8;m and the passing angle &#x394;&#x3b8; of the reference voltage vector and the modulating ratio m; comparing a variable quantity &#x3b8;f the reference voltage vector angle &#x3b8; and the output angle of three basic voltage vectors, and outputting corresponding basic voltage vectors according to the comparing result; synthesizing an output voltage in accordance with the reference voltage vector by the basic voltage vectors.

Space vector based synchronous modulating method and system

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Hunan, China

Gaohua Chen