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在具有两个液动机(液压油缸或液压马达)的液压设备中,常需要这两个液动机同步地执行动作。为此,可采用液压同步阀来实现。根据不同的具体要求,同步阀可有不同的结构型式,液压分流阀就是其中比较简单的一种。它能将液压泵输出的流量均等地分配给两个液动机,不管它们的负载是否相同,都能使它们实现速度同步。过去对液压同步阀的静态精度的研究较多,但对其动态性能却研究很少,因此影响了这种阀总体精度的分析。本文利用七十年代兴起的键图理论,现代控制理论,对液压分流阀的两股分流流量的动态变化过程进行了分析研究,为今后改进该阀的设计,进一步提高阀的总体精度提供了依据。
In a hydraulic device with two hydraulic motors (hydraulic cylinders or hydraulic motors), it is often necessary for the two hydraulic motors to perform actions synchronously. To this end, hydraulic synchronous valve can be used to achieve. According to different specific requirements, the synchronization valve can have different types of structure, hydraulic diverter valve is one of the more simple one. It distributes the output from the hydraulic pump equally to the two hydraulic motors, enabling them to be synchronized in speed regardless of their load. In the past, there were many studies on the static accuracy of the hydraulic synchronous valve, but little research was done on its dynamic performance, thus affecting the overall accuracy of the valve. In this paper, using the key map theory and modern control theory which emerged in the seventies, the dynamic change process of two split flow of hydraulic splitter valve was analyzed and studied, which provided the basis for improving the design of the valve and further improving the overall accuracy of the valve .