输电塔-线体系风致响应的鲁棒半主动控制  

Wind-induced Response Suppression of Transmission TowerLine System Using a Robust and Semi-active Controller

作　　者：马涌泉[1] 邱洪兴[1] 

机构地区：[1]东南大学混凝土及预应力混凝土结构教育部重点实验室,江苏南京210096

出　　处：《东北大学学报（自然科学版）》2016年第2期279-284,共6页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51078077);"十二五"国家科技支撑计划项目(2012BAJ14B00)

摘　　要：为了抑制输电塔-线体系的风致动力响应,基于多目标优化理论设计了鲁棒H2/H∞控制器.在体系平面内、外振动状态方程的摄动矩阵中引入不确定性,运用MATLAB中的线性矩阵不等式工具箱并结合改进的限幅最优(MCO)控制器提出了H2/H∞_M CO半主动控制策略.以某特高压猫头型输电塔-线体系为算例,分别计算了其在无控制、被动控制、恒定增量(CI)半主动控制及H2/H∞_M CO半主动控制下的风致响应.结果表明:H2/H∞_M CO策略对塔体位移、塔体加速度和塔底内力的抑制效果比无控制、被动控制及CI控制的抑制效果都要显著.The robust H2/ H∞controller designed by multi-objective optimization theory was applied to suppress the wind-induced dynamic response（ WIDR） of the transmission tower-line system（ TTLS）. The uncertain parameters（ mass,damping and stiffness） were introduced into perturbed matrixes in vibration（ both in-plane and out-plane of the TTLS） state equations,and the H2/ H∞_MCO semi-active control strategy was proposed by the linear matrix inequalities（ LMI）tool box in the MATLAB and modified clipped-optimal（ MCO） control algorithm. An cat ＇s head-type TTLS with ultra high voltage was used as an example,and the WIDRs of the example under non-control（ NC）,passive control（ PC）,constant increment（ CI） semi-active control and H2/ H∞_MCO semi-active control were computed,respectively. The consequences indicate that the vibration suppression effects of the H2/ H∞MCO on tower displacements,tower accelerations and tower bottom internal forces（ shear forces and bending moments） are obviously superior to those of NC,PC and CI.

关 键 词：输电塔 阻尼器 动力响应 振动控制 鲁棒性 

分 类 号：O328[理学—一般力学与力学基础] TM726.1[理学—力学]