MTS控制系统的二次开发及其在混合试验中的应用
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摘要
混合试验将物理实验与数值模拟相结合,大大降低了对加载系统的要求,可以完成大比例尺甚至足尺试验,且方便观察试件的地震响应过程,因此广受关注。为了推进混合试验方法的研究与应用,哈尔滨工业大学吴斌教授课题组正在开发一款混合试验平台,即HyTest。本文针对常用的MTS电液伺服系统,采用MTS提供的VB软件接口开发了HyTest试验平台与MTS控制系统的通信模块,具备发送命令、保存数据、坐标变换、网络通信等功能。完成了一例单层单跨6自由度平面钢框架结构混合试验,验证了该通信模块的有效性。重点介绍所使用的开发方法及其在混合试验中的应用,既方便同行使用HyTest,又可作为MTS系统二次开发的借鉴。
Hybrid testing combines physical experiment and numerical simulation,and hence greatly reduces requirements for the loading system. Furthermore,it is possible and convenient to observe specimen responses during large-scale or even full-scale hybrid test. All features result in attentions widely paid to this testing method. In order to promote research and applications of hybrid test methods,the research group of Professor Bin Wu from Harbin Institute of Technology has been developing a hybrid test platform,namely HyTest. In this paper,a communication module between HyTest and the extensively-used MTS control system has been developed using the VB interface offered by MTS. This module can send commands to the MTS system,store data to computer,perform coordinate transformation,and communicate with HyTest via network. The effectiveness of this module is verified through a hybrid test on a single-story single-span 6-DOF steel frame structure. This article highlights the development method and its application to hybrid testing,and therefore,it is helpful for peers to use HyTest,and can offer a reference for secondary development of the MTS control system as well.
引文
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