Abstract: The electro-hydraulic servo system, a satisfactory equipment, is widely used in test area. As an example, this paper measures the lateral stiffness of a two-storey steel frame with electrohydraulic servo system. During the experiment, a timed-trace data-acquisition program is developed. It proves that the electro-hydraulic servo system can set up ideal restraint conditions, and the programmed data-acquis-ition and analysis result in higher precision of measurement. Key words:Servo control, lateral stiffness, timed-acquisition

Key words: Servo eontrol, lateral stiffness, timed-aequisition

摘要： 本文叙述了如何用电液伺服系统作为试验设备测试建筑结构的侧移刚度。试验过程中,编制了实时跟踪采集程序进行数据采集。通过对一榀两层刚架结构侧移刚度进行测试,结果表明电液伺服系统能对结构建立起理想的约束状态,程控数据采集和分析使试验的精度大为提高。可供研究建筑结构侧移刚度参考。

关键词: 伺服控制, 侧移刚度, 实时采集