实时混合测试的迭代方法：应用于具有两个界面自由度的悬臂梁
Iterative method for real-time Hybrid testing: application to a cantilever beam with two interface degrees of freedom
AI总结：
针对周期性响应结构的实时混合测试，本文提出通过控制作动器周期性需求来迭代平衡界面条件的方法，并在两自由度界面悬臂梁上验证其稳定性与同步效果。
摘要：
本文提出了一种用于实时混合测试（RTHT）的迭代方法。该方法通过控制作动器的周期性需求，寻求在物理子结构与数值子结构之间迭代平衡界面条件。因此，它适用于经历周期性响应的结构的RTHT，例如在共振下受激的结构。我们在一个弯曲运动的悬臂梁上展示了该方法的能力，该悬臂梁在界面处具有两个自由度，并被我们用作未来飞机机翼测试的原型。我们表明，在这些情形中会出现若干挑战，例如在控制连续结构时测量界面力的困难，以及混合测试在小时间延迟下的不稳定性。经典RTHT策略可能产生不准确或不稳定的结果，而所提出的方法能够在广泛的测试场景中实现非常好的界面同步。
英文摘要：
In this paper, an iterative method for real-time hybrid testing (RTHT) is proposed. The method seeks to iteratively balance the interface conditions between the physical and numerical substructures by controlling the periodic demand of the actuators. It is then suitable for RTHT of structures undergoing a periodic response, e.g. structures excited at resonance. We demonstrate the capabilities of the method on a cantilever beam in bending motion with two degrees of freedom at the interface, which we use as a prototype for future testing of aircraft wings. We show that a number of challenges arise in these settings, such as the difficulty in measuring interface forces while controlling a continuous structure and the instability of the hybrid test for small time delays. Classical RTHT strategies could produce inaccurate or unstable outcomes, whereas the proposed method is able to attain very good interface synchronisation in a wide range of tested scenarios.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
