To experimentally assess the fire resistance of civil structures, testing whole structures is very costly but the standard tests on individual structural elements can sometimes be too simplistic, regarding their boundary conditions. Hybrid fire testing is then a promising approach to overcome some of these limitations. In order to perform such tests, the existing procedures make use of estimated parameters from the tested structural element. Furthermore, the actuators system of the experimental set-up must include a direct displacement feedback control, leading to difficulties in the case of stiff elements. This paper will present a method to avoid these two constrains of the previous approaches. A new hybrid fire testing procedure is designed, permitting the control of the actuator system without explicit knowledge of the structural element position. Then an adaptive controller dedicated to this procedure will be described. A virtual environment has been developed in order to assess the behavior of the presented testing procedure and controller, through a virtual hybrid fire test. It is subject to assumed experimental imperfections such as noise, quantization and actuator non-linearities. A test case is performed within this framework, showing good agreement with the expected results. Finally, preliminary experimental hybrid test case performed at ambient temperature is presented.

中文翻译：

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用于混合火灾测试的自适应控制器

为了通过实验评估土木结构的耐火性，测试整个结构的成本非常高，但就其边界条件而言，对单个结构元素的标准测试有时可能过于简单。混合防火测试是克服其中一些限制的一种很有前途的方法。为了执行这样的测试，现有程序利用来自测试结构元件的估计参数。此外，实验装置的执行器系统必须包括直接位移反馈控制，导致刚性元件的困难。本文将提出一种方法来避免上述方法的这两个约束。设计了一种新的混合防火测试程序，允许在不明确了解结构元件位置的情况下控制致动器系统。然后将描述专用于该过程的自适应控制器。已经开发了一个虚拟环境，以便通过虚拟混合火灾测试来评估所提出的测试程序和控制器的行为。它受假设的实验缺陷影响，例如噪声、量化和执行器非线性。在此框架内执行了一个测试用例，显示出与预期结果的良好一致性。最后，介绍了在环境温度下执行的初步实验混合测试用例。通过虚拟混合火灾测试。它受假设的实验缺陷影响，例如噪声、量化和执行器非线性。在此框架内执行了一个测试用例，显示出与预期结果的良好一致性。最后，介绍了在环境温度下执行的初步实验混合测试用例。通过虚拟混合火灾测试。它受假设的实验缺陷影响，例如噪声、量化和执行器非线性。在此框架内执行了一个测试用例，显示出与预期结果的良好一致性。最后，介绍了在环境温度下执行的初步实验混合测试用例。