Future mobile communication systems aim at providing very high-speed data transmission, even under very high mobility scenarios such as high speed wheel-track trains (up to 574.8 km/h test speed or 380 km/h commercial speed), maglev trains (up to 581 km/h test speed or 431 km/h commercial speed), airplanes (about 4001000 km/h commercial speed), guided missiles (about 980–20,000 km/h) or spacecr...

The digital information revolution has brought profound changes in our society and our lives. The many advantages of digital information have also generated new challenges and new opportunities for innovation. Broadband internet and wireless network environments which have made considerable progress in recent years offer many opportunities to deliver and to exchange information. The fair uses o...

Pushed by social demands, China has continuously developed its low-medium speed maglev transportation systems in recent decades. However, with the increase of running mileage train, high frequency vibration suspension frame gradually appears. In this paper, a method to analyze detecting current traction motor is proposed. Field measurements and train were conducted on line that been commerciall...

The levitation stability of maglev trains is determined by the interaction vehicle-bridge dynamic characteristics. state change vehicle and track beam will affect performance trains. In order to study characteristics trains, a coupled model based on an elastic was established influence stiffness load system. form numerical simulation, time-domain key characteristic variables, such as gap vertic...

Abstract Transient numerical simulations were carried out by placing dimples at the top, sides and bottoms of tail car streamline area a high-speed maglev train. The results an improved delayed detached eddy simulation turbulence model using three-dimensional compressible Navier-Stokes shear-stress transport K-Omega double equations compared to wind tunnel test verify accuracy, within 5% ground...

In case of high-speed maglev trains, the propulsion force of their Linear Synchronous Motor (LSM) is an essential performance element since the LSM is responsible for both the propulsion and levitation of the train. A large thrust force ripple causes vibration, noise and severe levitation disturbance during the train operation. Because of these reasons, efforts must be made to reduce the thrust...

The superconducting magnetically levitated transport (Maglev) system is conceptualized as a next-generation high-speed transportation system. For practical use, it is important to achieve adequate ride comfort particularly in high-speed running. Maglev vehicles are composed of lightweight car bodies and relatively heavy bogies which are mounted with devices such as superconducting magnets (SCMs...