Debbah, A.Kerboua, A.Klaiaia, R.2025-04-212025-04-212021http://dspace.univ-oeb.dz:4000/handle/123456789/21950This paper deals with the improvement of the control and the vanishing of the thermo-acoustic instability in gas-turbine engine combustors via a design of an active controller. The proposed design used a multi-objective genetic algorithm (MOGA) and multi-objective particle swarm optimization (MOPSO) to stabilize the unstable system from limit cycle with uncertain model. These parameters were chosen to minimize four objective functions: the mass fraction of the fuel produced, temperature control, flame fluctuation and the variation in the flow mass rate of input fuel. In addition, an improvement in suppression of the instability was achieved by coupling the combustor and the unsteady heat perturbations and thermos-acoustic models in simulation.enCombustion instabilities; Thermo-acoustic instability; Active control; Multi-objective optimizationArticle