磁悬浮系统的加速度计反馈控制算法  

Accelerometer feedback control algorithm for maglev system

作　　者：张锟[1,2] 崔鹏[1] 李杰[1] 

机构地区：[1]国防科技大学机电工程与自动化学院,湖南长沙410073 [2]铁道第三勘察设计院科技处,天津300142

出　　处：《控制理论与应用》2009年第9期988-992,共5页Control Theory & Applications

基　　金：国家科技攀登计划基金资助项目(2006BAG02B05-14)

摘　　要：设计了一种基于加速度计信号改善磁浮列车悬浮性能的控制算法.将固定在电磁铁上的加速度计的输出直接引入反馈控制量,使得悬浮控制系统在不同轨道曲线段上具有相同的表达式,从而使反馈线性化算法得以应用;利用离散跟踪-微分器,从测量到的间隙信号提取其一阶、二阶微分,使实际控制算法得以实现.仿真计算表明,该算法消除了列车进、出竖曲线的冲击,提高了悬浮性能.A control algorithm employing the accelerometer signal is designed to improve the suspension performance of the maglev train. By directly introducing the output of the accelerometer fixed on the magnet to the feedback control, an identical formula for the maglev control systems is achieved on different railway curves, and the feedback-linearization method becomes applicable. The first and second derivatives of the gap are obtained from the measured gap-signai by using a discrete nonlinear tracking-differentiator; this makes the control algorithm practical in application. Simulation results show that the impact response is eliminated when the maglev train runs on a perpendicular curve, which verifies the superiority of this novel control algorithm.

关 键 词：加速度计 反馈线性化 跟踪-微分器 磁悬浮系统 

分 类 号：TH824.4[机械工程—仪器科学与技术]