高速列车时滞、饱和非线性悬挂系统多速率控制方法研究

项目名称： 高速列车时滞、饱和非线性悬挂系统多速率控制方法研究

项目编号： No.51265009

项目类型： 地区科学基金项目

立项/批准年度： 2013

项目学科： 机械、仪表工业

项目作者： 曹青松

作者单位： 华东交通大学

项目金额： 50万元

中文摘要： 我国正处于铁路高速化、跨越式发展时期，车辆高速、安全与舒适就显得尤为重要，悬挂控制系统的研究是保证平稳安全运行的必要条件之一。本项目针对高速列车主动或半主动悬挂系统的时滞、饱和及多速率特性，研究悬挂系统的多速率控制方法。将悬挂系统时滞与多速率现象耦合至系统数学模型，由作动器饱和与控制受限形成约束条件，稳定性、平稳性和安全性作为考查指标，建立高速列车横向及垂向悬挂系统的时滞多输入多输出多速率数学模型。利用提升技术建立统一步长离散状态方程，各步长内采用鲁棒性能方法，结合预测控制策略实现优化控制。考察多速率、时滞与饱和特性对高速列车安全性舒适性等性能影响，并与传统连续系统模型下的性能指标进行比较，进一步评估系统性能恶化时的极限多速率范围、最大时滞量与饱和值。理论、仿真与实验相结合，全面证实多速率非线性悬挂控制系统的可行性与实用性。本研究的开展有望为列车高速安全运行提供新思路和奠定理论基础。

中文关键词： 主动或半主动悬挂；多速率控制；时滞；鲁棒预测控制算法；性能评估

英文摘要： Chinese railway is in a period of high-speed and great-leap forward development, therefore, it's very important to ensure the high-speed, safety operation and comfortableness of the railway. The study of suspension control system is one of the necessities to guarantee safety operation of railway. Aiming at high-speed railway active or semi-active suspension system with characteristics of time-delay, saturation and multi-rate, this project will study the multi-rate control method of suspension system. Coupled time-delay and multi-rate of suspension to mathematical models of the systems, and constrained the actuator saturation and control constraints, we can take stability, ride quality and safety as examination index, and then construct mathematics input and output model of high-speed train horizontal and vertical suspension of multi-rate system with time-delay. The unity step-sized discrete state equation is established by lifting scheme. Optimal control is to be realized using robust performance test method in each step and predictive control strategy. Studying impacts of time-delay, saturation and milt-rate on the safety, stability and comfortableness of train and comparing with the performance index of traditional continuous system model, we can make a further evaluation of ultimate multi-rate range, maximum

英文关键词： active or semi-active suspension；multi-rate control；time delay；robust prediction control algorithm；performance evaluation