TY  - JOUR
AB  - Purpose The purpose of this paper is to propose a new framework based on linear control system theory and the use of proportional (P) controller and proportional integral (PI) controller to address identified stability issues and control the time properties in hybrid fire testing.Design/methodology/approach The paper approaches hybrid fire testing as a control problem. It establishes the state equation to give the general stability conditions. Then, it shows how P and PI controllers can be incorporated in the system to maintain stability. A virtual hybrid fire testing is performed on a 2D steel frame for validation and to compare the performance of the controllers.Findings Control system theory provides an efficient framework for hybrid fire testing and rigorously formulate the stability conditions of the system. The use of a P-controller stabilises the process, but this controller is not suitable for continuous change of stiffness of the substructures. In contrast, a PI-controller handle the stiffness changes. The results of a virtual hybrid fire testing of a 2D steel frame shows that the PI-controller succeeds in reproducing the global behaviour of the frame, even if the surrounding structure is non-linear and subjected to fire.Originality/value The paper provides a rigorous formulation of the general problem of hybrid fire testing and shows the interest of a PI controller to control the process under varying stiffness. This methodology is a step forward for hybrid fire testing because it allows capturing the global behaviour of a structure, including where the numerical substructure behaves nonlinearly and is subjected to fire.
VL  - 10
IS  - 2
SN  - 2040-2317
DO  - 10.1108/JSFE-09-2018-0022
UR  - https://doi.org/10.1108/JSFE-09-2018-0022
AU  - Mergny Elke
AU  - Gernay Thomas
AU  - Drion Guillaume
AU  - Franssen Jean-Marc
PY  - 2019
Y1  - 2019/01/01
TI  - Hybrid fire testing in a non-linear environment using a proportional integral controller
T2  - Journal of Structural Fire Engineering
PB  - Emerald Publishing Limited
SP  - 245
EP  - 258
Y2  - 2024/04/18
ER  -