摘要
针对网络控制系统(NCS)具有不确定时延的特性,提出了将广义预测控制(GPC)应用于网络控制系统的思想。为了克服模型失配和系统不确定性的影响,基于BP神经网络建立一个误差的预测模型,用误差预测值对输出预测值进行补偿,构成新型的广义预测控制算法,并采用了平滑滤波的加权输入控制律。在网络控制系统中,测试了网络数据传输的随机延迟时间特性,比较了GPC和具有BP网络预测误差补偿的GPC两种控制方法,验证了具有BP网络预测误差补偿的GPC在模型失配时的更好的控制性能。
It is an extended discussion on the stir kinetic energy conservation law, which is proposed by OuYang Shoucheng. The authors think that stir kinetic energy conservation law is an important principle and analysis method for stability and evolutionism of systems. It is not only an approach for explaining stability of system, but also the analysis method for evolutionism of system, and it points out some problems in Newton＇s theories as well.
出处
《中国工程科学》
2005年第8期60-65,共6页
Strategic Study of CAE
