一种新型伺服直线泵的设计与实验

Design and Test of a Novel Servo Linear Pump

多电技术成为了飞机未来发展的一大趋势,是当下研究的热点,功率电传电静液作动系统是其核心技术之一。目前已有的或是正在研发的电静液作动器,主要采用旋转伺服电机驱动轴向柱塞泵的架构作为核心能源。轴向柱塞泵虽结构成熟,但却存在着摩擦磨损限制使用寿命,惯性较大限制响应速度,结构复杂难以余度配置等缺点。针对静液伺服传动设计了一种由电磁式直线振荡电机驱动的直线活塞泵,应用协同配流结构,保留原有的泵结构优势的同时,可突破性的提升伺服传动性能。研究搭建了直线泵的仿真模型,验证了该伺服直线泵的基本功能。

More Electric Aircraft(MEA)has become the trend of aircraft development,and is a hot research topic.Electro-hydrostatic Actuator(EHA)is one of the key technologies of MEA.The state of the art of EHA mainly uses a axial piston pump driven by a rotation servo motor as the system energy source.The construction of the axial piston pump is very sophisticated,but has several disadvantages in a servo control system,such as short lifetime limited by severe internal friction and wear,slow response limited by the relative large rotation inertia,and difficulty of redundancy configuration.In this research,a linear piston pump driven by a linear oscillation motor was designed,which has advantages of the conventional piston pump and also improves transmission performance in an EHA system,and a novel collaboration rectification structure was proposed.A simulation model is established,the simulation results verified the function of this pump.