用于扑翼飞行器气动力测试的三维力传感器研究与实验

气动力测试对验证扑翼飞行器的设计方法和优化改进飞行器重要系统特征参数起着重要的作用。 介绍了一种新研制 的结构简单、低成本、高性能的三维力传感器,用于扑翼机气动力测试系统,重点介绍了三维力传感器的设计和标定方法。 首 先,通过弹性机构的微变运动学建模验证了结构设计的可行性;然后,对传感器进行解耦标定实验,得到传感器的非线性误差小 于 1. 19% ,耦合误差小于 3. 21% ,灵敏度大于 1. 1 V/ N;最后,通过对一款小型扑翼飞行器的气动力进行测试,获得了扑翼机主 翼气动力随影响参数变化的定量评价数据,为扑翼机实现室内和室外的机动灵巧飞行,提供了有效帮助。

Research and experiment of the three-dimensional force sensor for aerodynamic testing of flapping wing vehicles

Aerodynamic testing plays an important role in evaluating the design method and optimizing the significant system characteristic parameters of flapping-wing vehicles. This article presents a newly developed three-dimensional force sensor with simple structure, low cost and high performance, which is used in the aerodynamic testing system of flapping-wing vehicles. It focuses on the design and calibration method of the three-dimensional force sensor. Firstly, the feasibility of the structure design is verified by the model of the micro-variation kinematics of the elastic mechanism. Then, the decoupling calibration experiment of the sensor shows that the nonlinear error of the sensor is smaller than 1. 19% , the coupling error is smaller than 3. 21% , and the sensitivity is larger than 1. 1 V/ N. Finally, by testing the aerodynamic force of a small flapping-wing vehicle, the quantitative evaluation data of the main wing aerodynamic force of the flapping-wing vehicle with the influence of the parameters are obtained, which can provide an effective help for the vehicle to achieve indoor and outdoor maneuverable flight.