双定子液压马达差动连接转矩脉动分析

发布时间：2018-04-24 14:17

本文选题：双定子液压马达 + 差动连接　；参考：《工程科学与技术》2017年05期

【摘要】：随着液压技术的不断发展,液压传动在各行业得到了广泛应用,同时也对液压马达输出转矩脉动特性提出了更高的要求。目前广泛使用的液压马达均是一个转子对应一个定子,无法实现液压马达的差动连接来满足复杂工况的需求。双定子液压马达因其特殊的结构形式,可在一个壳体内形成内外两组液压马达,可实现液压马达的差动连接。作者基于双定子液压马达结构形式及其差动连接原理,分析得到双定子液压马达差动连接时内、外马达之间的具体关系,即双定子液压马达差动连接时内马达由外马达驱动旋转,实现了泵的工作原理,并将其排出的油液输入到外马达中。在此基础上,深入分析了内、外马达的理论流量和理论转矩,并通过分析内、外马达的瞬时流量,得出马达瞬时转矩的变化情况,进而利用波动系数分析出在内马达输出脉动油液影响的前提下,双定子液压马达输出转矩波动性的一般规律,利用Matlab软件仿真得出不同滞后角0所对应的双定子液压马达差动连接时输出转矩曲线。并搭建了双定子液压马达差动连接试验平台进行试验。结果表明:滞后角对双定子液压马达差动连接时输出的转矩脉动具有很大影响,可以通过合理调整滞后角使双定子液压马达差动连接时输出的转矩更平稳。研究结果可为双定子液压马达差动连接的设计与应用提供参考。
[Abstract]:With the continuous development of hydraulic technology, hydraulic transmission has been widely used in various industries. At the same time, higher requirements for torque ripple characteristics of hydraulic motor output have been put forward. At present, the widely used hydraulic motors are one rotor corresponding to one stator, so the differential connection of the hydraulic motor can not be realized to meet the needs of complex working conditions. Because of its special structure, the double stator hydraulic motor can form two groups of internal and external hydraulic motors in one shell, and can realize the differential connection of the hydraulic motor. Based on the structure form of double stator hydraulic motor and its differential connection principle, the author analyzes and obtains the specific relationship between internal and external motors in differential connection of double stator hydraulic motor. When the double stator hydraulic motor is connected by differential connection, the internal motor is driven and rotated by the outer motor, which realizes the working principle of the pump, and inputs the oil discharged from the pump into the outer motor. On this basis, the theoretical flow rate and theoretical torque of the inner and outer motors are deeply analyzed, and by analyzing the instantaneous flow rate of the inner and outer motors, the variation of the instantaneous torque of the motor is obtained. Furthermore, the general law of output torque fluctuation of double stator hydraulic motor is obtained under the premise of the influence of internal motor output pulsating oil by using the fluctuation coefficient. The output torque curve of differential connection of double stator hydraulic motor with different hysteresis angle 0 is obtained by Matlab software simulation. A double stator hydraulic motor differential connection test platform was built. The results show that the hysteresis angle has a great influence on the torque ripple of the differential connection of the double stator hydraulic motor, and the torque output of the differential connection of the double stator hydraulic motor can be more stable by adjusting the lag angle reasonably. The results can provide reference for the design and application of differential connection of double stator hydraulic motor.
【作者单位】：燕山大学机械工程学院;
【基金】：国家自然科学基金资助项目(50975246)
【分类号】：TH137.51

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