摘要
利用LabVIEW&Matlab设计了悬挂系统实验台数据采集与控制系统,实现了LQG(Linear QuadraticGaussian)最优控制算法下悬挂系统主动/半主动振动控制。在LabVIEW环境下实时采集悬挂系统振动信号,并调用MATLAB Script计算状态反馈增益矩阵、Kalman滤波器的增益矩阵,得出线性二次型Gauss最优控制控制策略下最优控制力、半主动控制力数值;然后将此数值作为伺服信号,通过串口通讯,分别控制车速模拟系统、脉宽调制(PWM)电源进而控制作动器,实现不同车速下悬挂系统主动/半主动振动控制。实验结果表明,应用LabVIEW&Matlab设计的数据采集与控制系统能满足实验需要。
A testing data acquisition and control system for a semi-active suspension test machine is designed using LabVIEW＆Matlab codes. The Linear Quadratic Gaussian （LQG） optimal control algo- rithms are used to realize the active and semi-active vibration control for the suspension system. In the environment of LabVIEW, the real-time data acquisition of vibration signal of the suspension system is carried out. Employing MATLAB Script, state-feedback-gain matrix and Kalman-filter-gain matrix are calculated. Under the LQG optimal control, the values of optimal control force and semi-active control force are obtained. Finally, these values are transferred to PWM （Pulse-Width Modulation） power supply and actuator through a serial interface. The experimental results show that the data acquisition and control system designed with LabVIEW ＆ Matlab can meet the requirement of testing.
出处
《噪声与振动控制》
CSCD
北大核心
2009年第2期130-133,共4页
Noise and Vibration Control
基金
"十一五"国防预研项目
