Simulation and Analysis of Mechanical Characteristics of Hydrodynamic Energy-Fed Oil-Gas Spring Damper
Based on a hydrodynamic energy-fed oil-gas spring damper for special vehicles,the mathematical model and MATLAB/Simulink simulation model are established through theoretical analysis,and the influence law of different factors on its mechanical characteristics is analyzed.Firstly,the viscous damping force model of the damper is established by hydrodynamic theory and gas equation of state.Secondly,a set of feeder motor control circuit is designed,and the electromagnetic damping model of the damper is established based on the working principle of hydraulic motor.Finally,the influence of external excitation frequency,hydraulic motor displacement and duty cycle on the work characteristics of the damper is analyzed.The results show that the damper damping force increases with the increase of external excitation frequency,and the damping force tends to be excessively large when the frequency is larger;the damping force decreases with the increase of hydraulic motor displacement,and has a greater impact on the damping force when the displacement is small;the damping force increases with the increase of duty cycle,but has a smaller impact on the damping force when the duty cycle is larger.
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