Closed-loop control of turbine engine system in super deep operation condition

Open-loop thermal cycle turbine engine system is very fit for modern high speed autonomous under water vehicle(AUV) because of its good operation performance and simple system structure, but this power system can't keep its stability when it works in the condition of ultrahigh drain pressure and low speed, such a behavior makes the design of control system difficult. In this paper, the closed-loop control model of turbine engine system working in super deep operation condition was built, utilizing the slight inertia characteristics of executing machine and combustion chamber pressure, the control law of adjusting propellant flow was devised instead of the usual control law of adjusting capacity of variable capacity fuel pump. The respondence of the system is no overshoot in changing speed process, its rising time is less than 8 s, the dominating control parameters are allowed to change over 30%. Simulation results show that this control algorithm is simple and robust, the control system be regulated easily, its control quality is good.