Simulation on Closed-loop Control of Torpedo Turbine Rotary Velocity

To realize speed variation of a torpedo in a wide range, the nonlinearity and the remarkable variation of parameters due to the speed and depth variations in wide range are considered for a certain type of turbine engine system of thermal propulsion torpedo. The models of fuel-variable pump, combustion chamber and engine are established to obtain the nonlinear and dynamic characteristics of the system as well as the system parameters in different conditions. Further, a closed-loop control strategy of rotary velocity is drawn up, and the proportion-integral-derivative(PID) control algorithm with variable parameters is adopted to implement rotary velocity control simulation of the turbine engine. Simulation results indicate good performance of the closed-loop control of turbine engine rotary velocity.