内曲线液压马达定子曲线设计与动力学建模OA北大核心CSTPCD

The stator is one of the key parts of the internal curve hydraulic motor,and its curve shape has an important influence on the performance and service life of the hydraulic motor.A stator curve design method based on the motion law of quintic polynomial is proposed to solve the problem that the internal curve hydraulic motor with constant acceleration has great impact during operation.Firstly,the quantitative relationship between the output torque of the hydraulic motor and the amplitude angle of the zero speed zone is established through the force analysis of the functional module of the hydraulic motor,and the amplitude angle of the zero speed zone is optimized on this basis.The results show that the stator curve torque pulsation rate is minimum when the zero velocity section angle is 0.5°.Secondly,on the basis of the above research,the dynamic model of hydraulic motor considering stator wear is further established,and the numerical calculation method is used to simulate and solve the model.Finally,the vibration response of hydraulic motor under different speed is studied by experimental method,and the correctness of the theoretical model is verified.