Intelligent System of Outer Rail Superelevation on Curve and its Key Technologies

The characteristics of Chinese high speed railway are the mixed transportation of passenger and freight on line, and large difference in traveling speed for different kinds of trains. Thus the requirement on setting superelevation on curve is becoming higher. The better method of solving this problem is to enhance the radius of curve, and set the superelevation value according to the average speed of all kinds of trains on one line. The maximum excessive and deficient superelevation can meet all trains' running, passenger's comfort, and maintenance requirement. For the purpose of adjusting the outer rail superelevation on curve, an intelligent system is put forward in this paper. It can adjust the outer rail superelevation in real time to meet the needs of trains with different speed, and remove excessive and deficient superelevation in theory when transiting the curve. The system is mainly comprised of DSD (detecting speed device), CPS (central processing system), SAD (superelevation adjusting device), and SCD (supervision and control device). In this paper, the principle, key technologies, feasibility, problems needed to solve and applied foreground of this intelligent system are discussed.