A New Type of Hybrid Semi-Active Control Strategy in the Application of the High-speed Railway Vehicle Vibration Control

Abstract

the article firstly introduces two main high-speed locomotive vehicle semi-active control strategy, and aims at SH-ADD a new hybrid semi-active control strategy are discussed in this paper From the point of the research results of the example analysis, the SH-ADD hybrid semi-active control strategy has obvious superiority, realize the effective control of low frequency and intermediate frequency range, can effectively reduce the lateral stability index, at the same time also can reduce the body lateral acceleration. Introduction Usually greater than the speed of 200km/h speed of passenger and EMU consisting of high-speed railway vehicles, due to the high speed railway vehicle running speed is faster, so the vehicle is in operation vibration is very large, which is particularly severe lateral vibration. To reduce this vibration, to ensure high-speed iron safe and comfortable operation of the vehicle, usually semi-active suspension control system to control. A Semi-active Suspension System High-speed railway vehicle running smooth and comfort need to train suspension control system controlled by the suspension system optimization design, to achieve effective attenuation of lateral vibration. High-speed railway applications listed three main suspension system comprises passive suspension system, all active suspension system with semi-active suspension system. Because the passive suspension system spring element and the damping element parameters are not adjustable, so there is a big limitation to ensure the smooth operation of the train, etc., and full active suspension system because of its high cost and complexity, in fact, difficult to be applied. Compared with full active suspension system, semi-active suspension system lower prices, simple, and therefore has broad prospects for development. Semi-active suspension system is comprised of a controller, sensor devices and semi-active damper composition, the role of the controller is to get feedback signal from the sensor is calculated to obtain the required damping force, wherein the feedback signal from the sensing means Being semi-control strategy. After calculating the damping force shock absorber controller will issue execution on shock absorbers, semi-active damper drive magnetic or electromagnetic valve according to the instructions made by the appropriate adjustments. The control technology from the research point of view, China is still confined to the theoretical analysis and laboratory tests, and has been successfully used in foreign commerce. Whether semi-active suspension system can be applied in practice, depending on the control strategy and control dampers, and current research on against both carried out. The Semi-active Control Strategy On semi-active control strategy point of view the main stage RS control, SH skyhook damping control and ADD acceleration control simple semi-active control strategy, as well as adaptive control, fuzzy control and neural network control and other complex modern half active control strategy, which the simple semi-active control strategy more commonly used in commercial 6th International Conference on Mechatronics, Materials, Biotechnology and Environment (ICMMBE 2016) © 2016. The authors Published by Atlantis Press 671 applications with trials, it not only can be manually adjusted, but also with a sensor control device automatically adjusts the instrument constituting the system. Now high-speed railway vehicle 2 1/4 car of its own suspension system lateral model skyhook damping control and acceleration control strategy analysis. Skyhook semi-active control strategy proposed by Karnopp, the control strategy and the control system is not much relationship, robust, and simple control strategy. The switch control strategy into specific semi-active and continuous semi-active, and is widely used in practical engineering. SH skyhook semi-active control strategy expression: