Formalization Model of High Speed Trains in ATP Control and Its Safety Analysis

Control of high speed train is the key technique for the safety of train. Through reviewing the state of arts and development trend of high speed train, the difference between China and Europe in the application and technology of high speed train is discussed. The train control pattern in ATP, which will be widely applied in the future, is analyzed. The Duration Calculus, which is a formalization tool aiming at real-time and continuous system, is creatively used to set up the formalization model of train control pattern in ATP based on the notation, axiom, theorem and the rules of deduction of duration calculus. A primary safety analysis of train control pattern in ATP control is given by the inference of the model. Some key factors that play important role in ATP control pattern are found. Especially, time restrictions satisfied during the transition between ATP control and man control are discovered. The achievements provide a new theory analysis method for the design of safe and reliable ATP system.