针对如何减小齿轮泵引起的流量脉动，提出了通过采用2个设计参数相同的外啮合齿轮泵合流的方式减小流量脉动，并利用AMESim搭建了双泵合流液压系统的仿真模型，通过仿真探究了两齿轮泵齿轮初始啮合位置相差不同角度时，液压系统对应的流量脉动特性。在双泵合流的基础上，提出了利用模糊控制器根据系统的流量脉动特性及时调整两齿轮泵的转速，可以进一步改善液压系统的流量脉动，并通过AMESim-Simulink联合仿真得到了模糊控制作用下的双泵合流液压系统的流量脉动特性。
Abstract
Aiming at how to reduce the flow pulsation caused by the gear pump, it is proposed to reduce the flow pulsation by using two external gear pumps with the same design parameters to merge, and use AMESim to build a simulation model of the dual-pump confluence hydraulic system. Explored the flow pulsation characteristics of the hydraulic system when the initial gear positions of the two gear pumps differed by different angles. On the basis of dual-pump confluence, it is proposed to use a fuzzy controller to adjust the speed of the two gear pumps in time according to the flow pulsation characteristics of the system, which can further improve the flow pulsation of the hydraulic system. Through the AMESim-Simulink joint simulation, the flow pulsation characteristics of the dual-pump confluence hydraulic system under fuzzy control are obtained.
关键词
外啮合齿轮泵；双泵合流；流量脉动；模糊控制；联合仿真
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Key words
external gear pump, dual-pump confluence, flow pulsation, fuzzy control, joint simulation
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基金
四川省科技厅重点研发项目（2020YFG0119）
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