摘要
本文提出如何由在线数字微机实现闭环主动性结构控制的在线控制算法问题,并结合快速加荷的拟动力试验技术,介绍“在线”数字微机控制非线性结构振动的基本原理,针对单自由度非弹性离散化模型提出闭环单步预报主动与被动控制相结合的在线控制算法,包括电液伺服系统的调节算法和力时滞响应问题,并综合分析了各种可能的误差源,提出估计其界限值的仿真模型。最后综合指出对实际工程结构实现闭环主动性控制有普遍意义的一些主要条件和进一步的研究方向。
In this paper, the problem about on-line control algorithm for active structural control with closed-loop to be practised by an on-line digital microcomputer is presented. Based on the technique of pseudo dynamic testing with fast-rate-loading.the basic principle of on-line digital computer control of aseismic inelastic structures is reviewed. The on-line digital closed-loop control algorithm using a single-step predictive model and working compatibly in active/passive manner for a discreted model of a single-degree-of-freedom inelastic structural system, including the regulating algorithm and the time-delay of active control-force for an electro-hydraulic service system, is presented. The sources of the possible errors are summarily analyzed,and the simulation method for estimating their limits is proposed. Finally, several main conditions and the further studying direction which have general significance to practise the active control with closed-loop for a practical structure are pointed out.
出处
《地震工程与工程振动》
CSCD
北大核心
1992年第4期58-67,共10页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金
