无人机拉索式发动机操纵系统精度特性及试验研究

精度是拉索式操纵系统的重要性能指标之一,其高低直接影响发动机的稳态和瞬态性能。介绍拉索 式发动机操纵系统的组成及原理,通过拉索式操纵系统精度试验,从单程精度、回程差和重复性精度三个维度 分析其精度特性;采用单一变量法,通过试验依次分析弹簧力臂和刚度系数、拉索导向套路线布置以及拉索的 长度等对操纵系统精度的影响。结果表明:拉索式操纵系统单程精度绝对值小于5%,在死区外的范围回程差 小于3%,重复性精度小于2%;可通过合理设计拉索长度及弹簧刚度系数缩小死区范围;拉索导向套两端的横 向间距过大会降低操纵系统精度。

Accuracy Characteristics and Experimental Research of UAV Cable Engine Control System

In this paper, composition and principle of cable engine control system were firstly introduced. Based on the test of cable control system, the accuracy characteristics are analyzed from three dimensions: one-way accuracy, stroke accuracy and repeatability accuracy. Through experiment bases on single variable method, the effects of different spring force arm and stiffness coefficient, cable guide sleeve routing and cable length on precision of the control system are compared. The result shows that the absolute value of one-way accuracy is less than 5%, the stoke accuracy outside the dead zone is less than 3%, the repeatability accuracy is not greater than 2%.Then the dead zone range in the cable system can be reduced by reasonable design of the cable length and spring stiffness factor. Finally, the lateral spacing between the ends of cable guide sleeve is too large to reduce the accuracy of the control system. The research results have practical guidance for the development of high-precision cable-type control system.