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Numerical Simulation and Dynamic Characteristics of Secondary Controlled Hydrostatic Drive

机译：二次控制静液压传动的数值模拟和动力学特性

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Hydrostatic secondary control is the definition for a variable displacement rotary hydrostatic drive working with constant pressure. The configuration of the standard swash-plate design secondary controlled unit A4VS is introduced. Based on mathematical models of some components such as electro-hydraulic servic servo valve, positioning cylinder and axis piston unit, the block diagrams of double closed-loop speed control circuit are discussed. In order to research the dynamic characteristics of the secondary controlled hydrostatic drive, the numerical simulation model is established by use of MSC. EASY5 software. The comparative analysis on results of numerical simulation and test for frequency response characteristic demonstrated that the simulation model of the secondary controlled hydrostatic drive is adequately accurate. The influences of load inertia and the PID parameters on the dynamic characteristic of secondary controlled hydrostatic drive are investigated depending on simulating and test.
机译：静液压辅助控制是在恒定压力下工作的可变排量旋转静液压驱动器的定义。介绍了标准斜盘设计辅助控制单元A4VS的配置。基于电动液压伺服阀，定位缸和轴向活塞单元等部件的数学模型，讨论了双闭环速度控制电路的框图。为了研究二次控制静液压传动的动态特性，利用MSC建立了数值仿真模型。 EASY5软件。通过对数值模拟结果和频率响应特性测试的比较分析表明，二次控制静液压驱动器的仿真模型具有足够的精度。通过仿真和试验，研究了负载惯量和PID参数对二次控制静液压传动动态特性的影响。

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