摘要
针对框架系统所具有的复杂性、不确定性、大柔度等特点 ,为保证系统控制的顺利实现 ,在系统可控性格拉姆矩阵与可观性格拉姆矩阵相等的基础上 ,本文采用了模型降阶方法 ,取最初的几阶模态 ,经过系统离散进行控制。本文采用了能够控制不精确模型及未知外力情况下可以达到较好控制效果的广义预测控制 ,同时考虑到许多状态变量不可测量的特点 ,选用次优控制的方案。最后给出了计算实例 。
In consideration of the complexity,nondeterminacy and flexibility of an intelligent frame structure,a condensation method for the control of the structure is proposed in the paper,so as to perform the control smoothly.In the method,only the first several modes of the structure are taken as the controlled objet,which will be discrete in the control system.In this work,two control schemes are adopted:the generized predictive control scheme and the sub optimal control scheme.The fomer can achieve fairly good effect of control on the system with an imprecise model and unknown external forces,while the later satisfies the system with many immeasurable state variables.The results of a numerical example show the effectiveness of the method.
出处
《振动．测试与诊断》
EI
CSCD
2004年第2期139-142,共4页
Journal of Vibration,Measurement & Diagnosis
关键词
广义预测控制
主动控制
次优控制
框架
generalized predictive control active control sub optimal design frame
