速度控制型实时子结构实验系统  

Real-Time Substructure Hybrid Earthquake Loading System Based on Velocity-Based Loading Concept

作　　者：袁涌[1,2] 熊世树[1,2] 家村浩和[3] 朱宏平[1,2] 

机构地区：[1]华中科技大学土木工程与力学学院,湖北武汉430074 [2]华中科技大学控制结构湖北省重点实验室,湖北武汉430074 [3]日本京都大学,日本京都650-8501

出　　处：《同济大学学报（自然科学版）》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)

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.

关 键 词：实时子结构实验 速度控制法 橡胶隔震支座 高速数字信号处理器 

分 类 号：TU317[建筑科学—结构工程]