Design and optimization of proportional electromagnet parameters of hydraulic pilot throttle valve
It is an important indicator for the design of the suspension system of tractors in hilly and mountainous areas to ensure the optimal matching state between traction and plowing depth when the tractor is working on hilly terrain or hard soil.Proportional electromagnets is the main component of throttle valve electromechanical conversion,its performance is of great significance in controlling throttle opening and achieving proportional adjustment of flow rate.This article focuses on the operational requirements of the suspension system of tractors in hilly and mountainous areas and the design requirements of the hydraulic proportional valve,a pilot throttle valve proportional solenoid for adjusting the attitude of the suspension hydraulic system is designed,and the key structural parameters of proportional solenoid are calculated.A mathematical model of the solenoid is established,and the impact of Maxwell on the flow characteristics of the valve group is simulated and analyzed.At the same time,genetic algorithm was used to optimize parameters such as the thickness of the magnetic isolation guide sleeve,the angle of the magnetic isolation ring,the width of the magnetic isolation ring,and the depth of the stator core.Finally,Maxwell was used to conduct finite element analysis of the optimized proportional electromagnet before and after optimization.The simulation results revealed that the electromagnetic force of the optimized proportional electromagnet was almost parallel to the X-axis between 1-3 mm,and had better displacement force characteristics.The mathematical model of the pilot throttle valve was established,and its dynamic and static characteristics were simulated by Simulink so as to verify the rationality of the designed proportional solenoid parameters.
hilly and mountainous areastractorselectro hydraulic suspension systemhydraulic pilot throttle valveproportional electromagnetstructure parameters
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