单泵多马达传动系统输出转矩特性分析与试验

发布时间：2018-07-01 08:26

本文选题：泵 + 液压马达　；参考：《农业工程学报》2016年12期

【摘要】：为了使单泵多马达系统的输出转矩更加平稳,以双作用叶片泵和双作用双定子马达组成的传动系统为例,利用波动系数分析了在输入油液存在波动的前提下双作用双定子马达的输出转矩的特性,并搭建了单泵多马达传动系统试验平台。试验结果表明:多马达受到脉动油液作用后,在不同的工作方式下输出特性不同。当泵和马达波动周期一致时,其中内外马达差动工作时输出的转矩脉动最小,其转矩不均匀系数约为1.5%~1.9%。滞后角不同对内外马达并联工作时输出的转矩脉动影响较大,其转矩不均匀系数值最大时约为1.9%~2.7%,大于其他3种工作方式的转矩不均匀系数值。合理地调整滞后角可以使内外马达并联工作时输出转矩的转矩不均匀系数值小于内马达或外马达单独工作时的转矩不均匀系数值,降至1.9%~2%,也可使马达整体的输出转矩脉动降低,说明滞后角对马达输出的转矩脉动有很大的影响。该研究可为减小马达转矩脉动和单泵多马达传动系统的设计与应用提供参考。
[Abstract]:In order to make the output torque of single-pump multi-motor system more stable, the transmission system composed of double-acting vane pump and double-acting double-stator motor is taken as an example. The characteristics of the output torque of the double-acting double-stator motor under the condition of the fluctuation of the input oil are analyzed by using the fluctuation coefficient, and the test platform of the single-pump multi-motor drive system is built. The experimental results show that the output characteristics of multi-motors are different under different working modes after the action of pulsating oil. When the fluctuation period of pump and motor is the same, the output torque ripple is minimum when the internal and external motors are differential working, and the torque nonuniformity coefficient is about 1.5 / 1.9. The hysteresis angle has a great influence on the torque ripple output when the internal and external motors work in parallel, and the torque non-uniform coefficient is about 1.9 / 2.7 when the torque non-uniformity coefficient is the largest, which is larger than the torque non-uniform coefficient value of the other three working modes. Adjusting the lag angle reasonably can make the torque non-uniform coefficient of the output torque smaller than that of the inner motor or the outer motor working alone, and the torque ripple of the motor as a whole can also be reduced by reducing the torque nonuniformity coefficient to 1.9 / 2 and reducing the output torque ripple of the motor as a whole. It shows that the lag angle has a great influence on the torque ripple of the motor output. The research can provide reference for the design and application of motor torque ripple reduction and single pump multi-motor drive system.
【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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