航空中的力反馈技术

对力反馈在航空中的应用进行综述,主要涉及无人机遥操作和飞行安全性两大领域。首先,为了解决无人机所捕获的图像信息在分辨率、动态范围、视野等方面的不足,力反馈技术逐渐被引入,并得到了初步应用。起初没有考虑地面控制站与无人机之间的通讯时延问题,力反馈与小波变量的结合能有效地解决时延问题,但操纵负荷仍然很大,继而力刚度反馈技术被提出。其次,飞机执行器速率的限制易导致飞行员诱发的震荡危及飞行安全,为了有效地抑制这类震荡,智能提示和智能增益技术被提出。通过上述的分析和探讨,说明力反馈技术在航空中的研究与应用具有重要的意义。

Force Feedback Technologies in Aviation

This survey addresses applications of force feedback in aviation,concerning UAV teleoperation and enhancement of flight safety.Force feedback was firstly employed in UAV teleoperation due to the defects of images from cameras mounted on UAV.In order to mitigate the time delay problem of signal transmission,force feedback was combined with wave variables.The effect was prominent except that the workload remains high.Then the method of force-stiffness feedback was proposed.Actuator rate limit is the primary source of Pilot-Induced Oscillation(PIO).The combination of Smart-Cue and Smart-Gain was developed as a measure to alleviate such PIO effectively,and thus flight safety is enhanced.This paper describes the two aspects in details.As proven by the real-world applications in recent years,force feedback in aviation is worth theoretical exploration and application promotion.