Marshalling Yards Automation Hump Humping Speed Control And Simulation

Rail transportation of goods has always occupied the dominant position in the transport of goods especially in bulk cargo due to the large transport capacity and high cost performance, with the rapid development of national economy, the demand for the efficiency of railway freight transportation is higher and higher. As an important part of railway freight transportation, the core to improve the efficiency of the marshalling station is improving the efficiency of train breaking up and making up in hump. In recent years, with the development of the research on automation hump marshalling yards and the improvement of computing capacity, the study of automation hump humping speed control can be improved.Hump humping speed control as an important part of hump operation process, it has been an important factor restricting the development of hump automation. With the rapid development of railway transportation industry and the development of new type truck, the traditional " look-up table " method to determine the speed now expose many disadvantages such as insufficient classification and poor adaptability and so on. Looking for and improve the hump humping speed control model, improving the hump weaving train efficiency and automation level of demand increasingly prominent.Firstly, through the analysis and summary on the domestic and foreign research on the theory of the hump automation related achievements, explain the necessity of automatic hump development and the development of the vehicle running resistance analysis and speed control of the shortcomings of the study. On the basis of previous studies and running resistance of the vehicle especially the calculation method of wind resistance further, according to the original data of wind tunnel test to deduce wind resistance on the vehicle, vehicle speed, the direct relationship between the speed and direction of wind resistance, more accurate calculation formula is obtained. Through the study on the rule of vehicle running process and in-depth understanding of the purpose of brake parts of the reducer, the control of automatic hump vehicles rolling speed is the vehicle in various parts of a speed reducer to control the entrance conclusion.Based in various parts of the retarder brake to different, in guarantee and vehicle safety rolling interval and safety even hanging on the basis, to second place deceleration braking function optimization, by improving the second part deceleration means for the purpose of braking function to reduce the three parts of the deceleration device of braking energy height, so as to save the project investment. For all parts of the deceleration device of brake purpose to explore the speed calculation model is suitable for the speed of computer real-time control section calculation model of superposition.At last, the article design the humping vehicle off-line simulation software based on speed control model, simulate the vehicle rolling process draw curve of rolling process, and discusses the various parts of the deceleration braking situation, verify the correctness of the calculation model, the camel peak slip car scene provides a theoretical basis.