13.4. Asymmetrical nozzle flapper type single-stage electrohydraulic servo valve

In the manufacture and use of the nozzle flapper electrohydraulic servo valve, there is often a serious asymmetry. For example, the size of two nozzles is different, and the gap of the nozzle baffle is difficult to arrange symmetrically when assembly is conducted, and environmental temperature changes result in asymmetry of the geometric structure, etc. In the use of the electrohydraulic servo valve, there is often a need to withstand assessment of extreme work environment of extreme temperature, vibration, impact and acceleration. These easily lead to structural and performance asymmetry. The question of how to obtain the relationship between nozzle flapper valve ...

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