基于梅花形弹性联轴器的液压泵机组不对中振动研究

电液舵机的核心动力单元是由电机-泵构成的液压泵机组，可靠性和安静性是其关键性能指标。液压泵机组不对中会造成轴承磨损，降低液压泵机组可靠性，产生故障特征振动线谱，降低舰船安静性。梅花形弹性联轴器具有结构简单、补偿能力强、减振缓冲性能好等优点，已应用于舰船电液舵机动力单元。建立梅花形弹性联轴器偏角不对中的力学模型，理论分析液压泵机组的振动特性，通过实测结果验证了理论分析的正确性，为使用梅花形弹性联轴器的液压泵机组不对中故障诊断提供理论基础与试验依据。

Misalignment analyses of pumps-motor aggregate based on Plum-shaped flexible couplings

Pumps-motor aggregate is the power unit of the ship ruder system, which requires high reliability and quietness. Misalignment of the pumps-motor aggregate induces abrasion of bearing and impact between stator and rotor, result in instability and characteristic line spectrum. Plum-shaped flexible couplings possess many advantages such as simple in structure, high compensatory ability and good damping capacity has been used in ship ruder system. Establishing parallel misalignment model and angular deviation misalignment model of plum-shaped flexible coupling, and analyzing vibrating characteristic of pumps-motor aggregate provides theoretical analyze and test data on misalignment status diagnose of pumps-motor aggregate.