高耸结构风振的主动控制研究

Active Control for Tall-Slender Structure Vibration Induced by Wind

对采用张力索进行高耸结构风振控制的方法作了研究。首先,建立了由受控结构、张力索和液压伺服机构组成的控制系统的数学模型;进而设计了控制器,比较了力型、力+力矩型及力矩型三种张力索的实现形式和不同的控制作用位置下受控结构的振动水平及所需的控制力的大小;指出对于复杂结构,控制作用位置对张力索实现形式的选择及控制系统实现的难易程度有很大影响;讨论了随机风载的模拟;最后就某高耸复杂结构进行了仿真研究。

In the paper,the active control for vibration of a complex tall-slender structure with active ca- bles driven by an electro-hydraulic servo-system is studied.Firstly,the general expressions of force and moment provided by cables are given.Then,the control model is deduced,which includes the controlled structure,cables,a hydraulic actuator,an electro-hydraulic servo-valve,a servo-amplifier.Finally the great attention is paid to the effects of the cable location on the choice of cable types and the requirement of control energy.It is pointed out that the cable location greatly affects the type of cable and control energy, and they should be determined according to the real controlled structure to obtain the good control result and consume little energy.