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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。
This paper proposes how to implement the online control algorithm for closed-loop active structure control by an on-line digital microcomputer. Combined with the quasi-dynamic test technology for fast loading, the basic principle of “online” digital microcomputer for controlling nonlinear structural vibration is introduced. The elastic discretization model proposes an on-line single-step forecasting active and passive control combined online control algorithm, including the adjustment algorithm of the electro-hydraulic servo system and the force-delay response problem, and comprehensively analyzes all possible error sources, and proposes to estimate the limit. The value of the simulation model. Finally, it comprehensively points out some main conditions and further research directions that have universal significance for realizing the closed-loop active control of the actual engineering structure.