摘要
研究压电智能结构振动主动控制的问题。通过对分析梁的振动过程建立模糊控制规则,并在利用传统模糊控制器来控制系统的基础上,提出了一种新的以悬臂梁端点位移和端点速度为输入变量,对悬臂梁施加的控制力为输出变量的模糊控制方法。这种建立模糊控制规则和确定输入输出的方法不但缩短了提取输入变量的时间,而且比传统的以悬臂梁端点加速度和端点加速度的变化为输入变量的办法有更好的控制效果。最后,使用Matlab的仿真结果表明此种模糊控制方案的有效性。
This research aims at the active vibration control for piezoelectric intelligent structures. Fuzzy logic control rules are established by the basis of the analysis of the motion traits of cantilever beams. Based on the tradition fuzzy logic controller, the paper proposes a new fuzzy control strategy, which uses the displacement and the velocity of cantilever beam tips as inputs, and the control force on cantilever beams as outputs. The .proposed method can save the time to obtain inputs, and get the better effects than the method which uses the acceleration as well as the rate of cantilever beam tips as inputs. The simulation results illustrate that the proposed method has a better control performance than existing methods.
出处
《工程力学》
EI
CSCD
北大核心
2009年第10期228-232,共5页
Engineering Mechanics
基金
河北省自然科学基金项目(E2008000731)
河北省教育厅科学研究计划项目(2006107)
关键词
压电智能结构
主动控制
模糊控制
模糊控制器
仿真
piezoelectric intelligent structure
active control
fuzzy control
fuzzy logic controller
simulation
