摘要
在输出预测控制的基础上,提出了一种修改的预测控制算法,即在预测时域内,使系统的控制榆入不再保持不变,而是在一定的时域内可以线性改变,这样提高了控制的灵活性和系统的动态性能。将修改的预测控制算法应用于悬臂梁的振动控制。仿真结果表明,基于新的预测控制算法更加有效地抑制了柔性结构的振动。
A modified predictive control algorithmfor suppressing vibration of flexible structural system isdeveloped based on the state space model. Before thecontrol algorithm is modified, the predictive control in-puts are kept constant throughout the predictive horizonso that dynamic instability is induced to the control sys-tems. After the control algorithm is modified, the predic-tive control inputs are assigned to vary in the controlhorizon so that the control flexibility is improved. Andthe dynamic performance of the control systems is superi-or to that of the original one. The feasibility of the modi-fied control algorithm is verified through a smart struc-ture of a cantilever beam with surface mounted piezocer- camic. The simulation results have shown that the modi-fied predicative control is an effective method for the vi-bration suppression.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2003年第18期1545-1547,共3页
China Mechanical Engineering
关键词
预测控制
智能结构
主动振动控制
柔性结构
predictive control
smart structure
active vibration control
flexble structure
