摘要
针对大型起重铺管船吊钩减摇止摆控制实际问题,基于被动控制调谐吸振原理,设计了应用于悬吊结构摆振运动控制的调谐转动惯量阻尼器(Tuned RotaryInertia Damper,TRID),进行了受吊点激励作用下TRID系统控制的参数优化及其效果影响分析。首先基于拉格朗日原理推导建立了悬吊结构在吊点任意运动下的运动模型,分析了TRID系统的控制原理;其次采用数值方法分别分析了TRID系统对悬吊结构两种运动形式(平面摆振、空间锥摆运动)的控制效果及其最优参数设置;最后分析了TRID系统对悬吊结构在锥摆运动共振区控制效果出现异常的原因,针对TRID系统控制理想圆锥摆运动的局限性,提出TRID-TMD联合控制方案,数值分析结果验证了该方法的有效性和可行性。该文的研究为大型起重铺管船吊钩减摇控制奠定了部分理论基础。
The Tuned Rotary Inertia Damper （abbreviated as TRID） control system for pendular vibration suppression is proposed based on passive tuning and absorbing control principles. Parameter optimization and control efficiency analysis subject to point source excitations are carried out in this paper. Firstly, equation of motion for the suspensory structure in arbitrary motion is established based on Lagrangian principles, and the principle of TRID control system is presented. Secondly, numerical simulations of TRID control for two types of suspensory structural motions, planar pendular vibration and spatial cone motion, are conducted. Then, optimal parameters and impact factors are summarized. Lastly, the abnormal phenomenon in structural response in the resonant zone is studied. The combined TRID-TMD control system for suppressing the ideal cone motion mode is proposed to overcome the limitations of single TRID control system, and the effectiveness and feasibility are validated through numerical analysis. The research results of this paper establish partial theoretical foundation for anti-swaying of hook structures of large-scale heavy-lifting and pipeline-paving ships.
出处
《工程力学》
EI
CSCD
北大核心
2009年第12期85-91,共7页
Engineering Mechanics
基金
国家自然科学基金项目(50608026)
科技支撑计划项目(2006BAJ03B06)
973计划项目(2007CB714204)
关键词
摆振控制
调谐转动惯量阻尼器
平面摆振
空间锥摆运动
平转耦合运动
pendular control
Tuned Rotary Inertia Damper （TRID）
planar pendular vibration
spatial conemotion
planar-torsional coupling motion
