基于流体逻辑理论的某活塞泵逻辑特性分析

针对某活塞泵研制过程中出现的自锁故障模式,应用流体逻辑理论建立活塞泵气动控制回路工作时间表和工作状态卡诺图,通过逻辑推演分析了活塞泵控制回路的逻辑特性。分析结果表明,双滑阀控制方式中出现两个滑阀位置状态相同时即会导致自锁故障。从理论上明确了该双滑阀控制方式出现自锁故障的原因,并据此提出了单滑阀控制方式,可有效避免逻辑冒险问题。

Analysis on logic behaviour of a piston pump based on fluid logic theory

In allusion to the self-lock failure mode existing in the development of a certain piston pump,the operating sequential table and state K-map of the pump’s pneumatic control circuit are built with the fluid logic theory.The logic behaviour of the pneumatic control circuit is analyzed by logical deduction.The analysis results indicate that the self-lock failure will happen when two slide valve position state are the same.The reason why the self-lock failure occurs in two slide valve control mode is demonstrated in theory.Then a method to control the pump by single slide valve is put forward and it can avoid logical hazard.