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液压系统是由油路构成的网络,它和电路一样,都服从克希霍夫结点定律和回路定律,因而可以用网络理论提供的规范化的方法来建立液压系统的数学模型,以便实现液压系统的计算机辅助分析和计算机辅助设计,使得能够在设计阶段予测系统的最终性能并实现最优化设计。 本文建立了油路元件的线性化模型。在此基础上,构作了调速阀和二级溢流阀的网络图,分别用回路法和结点法建立了它们的阻抗矩阵和导纳矩阵,并对它们的动态特性进行了分析。 在本文的最后,介绍了根据上述方法拟定的一个计算机分析程序,用来计算Y型溢流阀的频率特性。
The hydraulic system, which is a network of oil circuits, follows the Kirchhoff node laws and circuit laws just as the circuit does, so that a mathematical model of the hydraulic system can be established using the standardized method provided by network theory in order to realize the hydraulic system The computer-aided analysis and computer-aided design enable the final performance of the system to be predicted and optimized design during the design phase. This paper established a linear model of the oil circuit components. On this basis, the network diagram of the governor valve and the secondary relief valve is constructed. Their impedance matrix and admittance matrix are established respectively by the loop method and the node method, and their dynamic characteristics are analyzed. At the end of this article, a computer analysis program developed according to the above method is introduced to calculate the frequency characteristics of the Y-type relief valve.