Dynamic optimization method for valve plate structure of aviation piston pump

Through the discharge area of aviation piston pump was calculated accurately, and the compressibility of oil and leakage of cylinder were considered, the nonlinear mathematical model of instantaneous flow rate was established. A dynamic optimization method of valve plate structure was proposed based on the nonlinear instantaneous flow model. The amplitude of instantaneous flow fluctuation was the objective function of the dynamic optimization method. With rotate-vector method, the structural parameters of valve plate were optimized on line dynamically. The simulation results indicate that the dynamic optimization method is high practical and efficient. This provides the theoretical foundation to the structural optimization of aviation piston pump, and the study of vibration elimination and noise reduction.