摘要
抖振问题,是滑模控制方法应用于土木工程结构振动控制中的突出障碍。为了能较好地解决滑模控制的抖振问题,结合滑模控制和模糊控制的优点,采用了一种模糊趋近律的滑模控制方法,对地震作用下建筑结构的振动控制问题进行了研究。以一个多层剪切型建筑结构模型为例,来验证所提控制方法的有效性。算例数值分析结果表明,所提出的滑模控制方法,控制效果明显,能有效地减小结构的地震峰值响应,且控制系统的抖振很小。
A new sliding mode control method involving fuzzy adaptive regulation of reaching law is presented for seismically-excited building structures. The excessive chattering effect, the major disadvantage of conventional sliding mode control methods, has been avoided by introducing our method. Finally we use the model of a three-storey shear-type building structure to verify the effectiveness of the proposed sliding mode control method. The results of numerical example analysis of the model ,given in Figs. 4,6 and 7 and Table2 in the full paper,show preliminarily that our method not only can reduce the peak response of the ground motion,but also can keep the chattering effect sufficiently low so as to ensure the system stable.
出处
《四川建筑科学研究》
北大核心
2008年第5期131-134,146,共5页
Sichuan Building Science
基金
国家自然科学基金(10572119)
教育部新世纪优秀人才计划(NCET-04-0958)
111引智项目(B07050)
陕西省自然科学基金(2006A07)
大连理工大学工业装备结构分析国家重点实验室开放基金资助项目
关键词
滑模控制
模糊控制
趋近律
抖振
建筑结构
sliding mode control
fuzzy control
reaching law
chattering effect
building structures
