Abstract
The performance of engineering machinery and equipments will be affected under the environment of unstable electromagnetic fields. In the magnetic field, with focusing on the proportional solenoid of a certain engineering machinery hydraulic proportional control system, the internal changes of characteristics in the magnetic field lead to the changes of force output characteristics through output changes in air gap magnetic flux, and the instantaneous output performance is affected by electromagnetic interference. The electromagnetic environment’s effect on the changes of electro-hydraulic control system is determined by implementation of the proportional solenoid electromagnetic interference. The result shows that the control performance of mechanical hydraulic control system becomes unstable, and the anti-electromagnetic interference capacity of electromagnetic sensitive element in the electro-hydraulic control system should be improved.
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