Optimization Of The Suspension System Of The Drum Washing Machine

When the drum washing machine is washed and dehydrated,the clothes will be unevenly distributed,which will cause the vibration of the whole washing machine.This topic focuses on the optimization goal-reducing the vibration amplitude of the drum washing machine.Based on the theory of multi-body system dynamics,the mathematical model of the drum washing machine suspension system is established,and the mathematical model was solved and analyzed.Based on the real physical prototype model,virtual prototype model of a Siemens washing machine suspension system is established,and the dynamic performance of the drum washing machine is analyzed.The HP-DJ82251 dynamic sensor signal acquisition and displacement sensor functions in the analyzer are used to obtain the vibration test curve of the door seal center,Then the displacement simulation curve is simulated in the ADAMS experiment,and the experimental curve and the simulation curve are compared to verify the accuracy of the virtual prototype model.Key component parameters of the drum washing machine: spring stiffness,damper damping coefficient and weight weight are optimized.The amplitude of the cylinder is less affected by the stiffness coefficient.When the damping coefficient is smaller than 0.4N·s/mm,the damping coefficient increases.In the greater than the range of 0.4N·s/mm,the amplitude shows a slight downward trend,the weight of the counterweight has a significant effect on the dynamic performance of the drum washing machine,but it will change the static balance center line of the original suspension system of the washing machine,but can be corrected by adjusting the spring preload force.Then carry on the multi-factor test design.Finally,the optimization calculation is carried out,After several iterations of the built-in algorithm,the optimized parameters are obtained:spring stiffness 3.232N/mm,damping coefficient 1.483N·s/mm,density of the weight 3189kg/m~3.In addition to the influence of the steady-state amplitude in the Y direction,the steady-state amplitudes in the Y direction and the Z direction are well improved.According to the correction characteristics and working mechanism of the balance ring,a mathematical model of the balance ring is established.In the mathematical model,the relationship between the main system parameters in the balance loop and the correction characteristics of the balance loop is elaborated.A balanced loop ADAMS simulation model was established and orthogonal experiments were performed.The experimental results are analyzed,and the ideal structural parameters of the equilibrium ring are obtained,and the equilibrium ring is optimized.