Active control of combustion oscillations based on Desired Dynamic Equation

Combustion oscillations have become a major issue for propulsion systems and combustion chambers since it can cause structural damages. Active control provides a way of extending the systems´ stable operating range and numerous efforts have been made by engineers and researchers. In this paper, increment type PID controller with real differentiation based on Desired Dynamical Equation (DDE-PID) is applied in the control of combustion oscillations in Rijke tube when exist no disturbance, sinusoidal disturbances and white noise disturbances. Meanwhile, orthogonal experimental design is used to investigate effects of the DDE´s parameters and real differentiation. The experimental results show that DDE-PID is easy to tune and can suppress combustion oscillations effectively. Furthermore, simple structure, good performance robustness, and independent on the model of processes make DDE-PID more suitable for practical applications in suppressing combustion oscillations.