CPP桨毂机构电液伺服加载试验台

提出一种新型加载试验台,可以完全模拟变螺距螺旋桨(CPP)在水中旋转时对桨毂机构产生的各种载荷力和力矩。CPP在不同转速、螺距和航速下所产生的推力、旋转阻力、离心力以及转叶扭矩,可通过多通道电液力(力矩)伺服控制系统,按照相应的载荷谱对桨毂机构实施加载,还可完成静态、动态以及脉动激振载荷力和力矩等加载试验。该加载系统采用立式结构,以大质量圆盘作为基座,被加载桨毂倒立安置在圆盘基座中心。对加载试验装置的关键结构件进行了有限元分析,并对电液伺服加载系统进行频率响应特性仿真分析。试验证明该加载系统能够满足各项加载试验要求。

CPP Hub Electro-hydraulic Servo Loading Test Bench

A novel electro-hydraulic servo hub machine loading test bench for controllable pitch propeller (CPP) was presented. Thrust, rotational resistance, centrifugal force and rotary vane torque generated by CPP in water at different pitch, rotational speed and speed can be imitated through a multi-channel electric hydraulic force (torque) servo control system. The servo control system could apply static, dynamic, pulsating load or variable load according to a loading spectrum to the hub. A vertical structure was utilized for the loading system, with a massive disk as the foundation bed. The loaded hub was installed upside-down in the center of the disc. Finite element analysis for the key parts of test bench was conducted, as well as the frequency response analysis of electro-hydraulic servo loading system. The experiments demonstrated that the loading test bench could meet the variety of load requirements.