Backstepping Sliding Mode Control of High Pressure Common Rail System

A backstepping sliding mode control algorithm is proposed to deal with the interference information such as oil leakage of high pressure pump and simplify high pressure common rail system. By constructing the state error, the sliding mode function was designed based on Lyapunov function to push back the rail pressure control law, and the stability of the control system was proved. The effectiveness of the backstepping sliding mode control method was verified based on simulation, and compared with fuzzy PI and traditional backstepping control methods. The simulation results show that the proposed method can meet the rail pressure control requirements of high pressure common rail system.