Design and Simulation of Stepless-Speed Thermal Power and Propelling System Based on Variable-Fuel-Pump

The Step less-Speed for operating performance of thermal propulsion system is a key technology to increase range of torpedo and increase probability of hitting. The paper presents the mathematical model of main parts\´, through analytic study of thermal torpedo\´s Power & Propelling System and parts The paper yields control laws for computer simulation using Variable structure control method. The algorithm of integrated control laws ensure easier computing in ECU. Results of Simulation and hardware in loop show speed error meets several requirements of engine system under condition of constant depth and constant speed, under condition of prescribed angle of torpedo ballistic trajectory", "under condition of transition processing of changing speed. The Control law can eliminate the vibration of system and has great performance of tracking engine speed.