Feed motion guides driven by linear motor in NC machine for industrial applications mostly adopt mechanical support and they easily produce wear because of impact and high speed. For above characteristic and the requirement of machining accuracy, application of maglev supporting technology in NC Machine is raised. By analyzing the structure of maglev feed motion guide, the mechanical model of s...

In this paper, we consider a continuous version of the convex network flow problem which involves the integral of the Euclidean norm of the flow and its square in the objective function. A discretized version of this problem can be cast as a secondorder cone program, for which efficient primal-dual interior-point algorithms have been developed recently. An optimal magnetic shielding design prob...

This paper presents a structured approach for quantitative risk assessment and subsequent safety analysis of the General Atomics urban maglev system that is under development. This approach, broadly based upon industry standards such as U.S. Military Standard 882C, AREMA Communications & Signals Manual Section 17, and CENELEC Norm EN50129, is applicable to any safety-critical system, and has be...

Considering that the speed control system of suspended permanent magnetic maglev train is more complicated and parameters are unstable than those other trains, traditional speed-tracking algorithm has large tracking errors, frequent controller output changes, high energy consumption, decreasing passengers' riding comfort. To improve shortcomings automatic operation (ATO) algorithm, this paper p...

with speed increasing in high-speed trains, due to limitations of other types of brakes, aerodynamic brake has become an important braking method. in this task to make better use of brake’s panel different configurations are examined and the best panel shape which provides the reasonable drag coefficient is introduced. the results of simulations are carried out with the computational fluid dyna...

The importance of the train speed is considered relative to activity railways, presenting a wide panorama influence, on one hand process transportation goods and passengers, and, other hand, rolling stock, infrastructure, organisation speed. objective article extend ideas about railways with help analysis Russian international history development results study Despite, it would seem, all certai...