Simulation Of Semi-Active Suspension Control Strategy And Its Applied Analysis On Tilting Trains

Tilting train is possible to pass the curve by high speed in order to reduce the ride comfort of passengers.This is an effective means for the raising speed of the existing line, the increasing ability of rail passenger transportation and enhancing the competitive ability about the railroad and other transportation vehicle. With the rapid development of the correlation discipline and the high new technology, the research and the exploitation about the suspension vibration control system run to train dynamics and the automatic control domain international front topic. In recent years, especially the prevalence of the high-speed, low-cost micro processing system, it probabilizes the research on practical initiative and semi-active suspension system. The semi-active control device is able to appear from now on more and more importantly as the method to change the ride comfort of passenger when applies the semi-active control suspension to tilting trains.Firstly, the development and application of domestic and foreigh semi-active suspensions and several semi-active suspension tilting trains abroad are described briefly. And in the second chapter the mechanism of increasing curving speed with tilting passenger car and the geometry kinematics and dynamics of the tilting mechanism are analyzed, the composition of the tilting train and realization of the the actuator leaned are elaborated, and then introduces the sky-hood control principle and control strategy. Studies many kinds of non-intelligent and the intelligent semi-active control strategy, including the sky-hood control, the PID control, the fuzzy control and the linear two optimum controls.The influences of above controls to the vehicles dynamics performance are analyzed.A tilting train model equipped with self-steering radial bogies is established via simulation software SIMPACK. The non-linearity of the wheel track contact geometry,the creep relations,the wheelset lateral displacement,second lateral checker,second anti-hunting shock are considered, as well as partial shock. The ride stability performances of the tilting carbody, hunting stability and curve negotiation performances of the semi-active suspension compared with the...