摘要
主要研究基于速度控制法的实时子结构实验系统.与传统的基于位移控制的实时子结构实验系统相比,本实验系统运用高速数字信号处理器,对信号实时采集、传输、逻辑判断与控制,使控制与计算程序简洁化,有效减少了时滞误差;同时,在实验系统中运用OS(operator splitting)数值积分法及相应的实验误差校正法,控制加载装置的速度;在实验系统中充分考虑隔震橡胶支座的速度相关性,可详细地研究橡胶隔震支座对桥梁结构的隔震效果.
This paper presents an investigation of the development of real-time substructure hybrid loading test system based on the velocity-based loading concept, The developed components of the loading test system include a real-time test control algorithm based on the velocity-based loading concept, a PC-DSP control system framework for the actuator signal processing, and the operator splitting（OS） used as the numerical time integration scheme. The PC-DSP control system can detect the real-time experimental control signal. The complex programming and time lag can be avoided with the operator splitting analysis method. The velocity-dependent behavior of rubber bearing is fully considered in the test system. So, the development of real-time substructure hybrid loading test system successfully pursues aceurate prediction of the dynamic response and isolation effects of rubber bearings under realistic earthquake conditions.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第9期1182-1185,1231,共5页
Journal of Tongji University:Natural Science
基金
国家自然科学基金资助项目(50708041)
