电控旋翼传感器系统余度设计及表决算法研究  

Research on Sensor System Redundancy Design and Voting Algorithm of Electrically Controlled Rotor

作　　者：王恒国[1] 陆洋[1] 

机构地区：[1]南京航空航天大学直升机旋翼动力学国家级重点实验室,南京210016

出　　处：《南京航空航天大学学报》2015年第2期290-295,共6页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：国家自然科学基金(51375229)资助项目

摘　　要：电控旋翼通过电作动器驱动伺服襟翼偏转,通过气弹作用带动桨叶变距,从而实现旋翼操纵。为提高电控旋翼传感器系统的可靠性,文中以模型电控旋翼系统为对象,提出了一套非相似三余度传感器系统方案;进一步提出了一种改进的表决算法,该算法通过将基于LMS算法的预测值引入表决中,使三余度传感器系统在出现两路随机故障时仍能够有效判别正常信号,从而提高了系统的可靠性;通过仿真验证了该改进表决算法的可行性;最后通过对襟翼传感器的试验研究,证明了所提出的余度设计方案及表决算法的有效性。Electrically controlled rotor changes blade pitch through trailing flap deflection, so as to realize the primary control of the rotor. The reliability of the electrieity system is lower than the traditional mechanical systems. Thus, in order to improve the reliability of the sensor system of electrically controlled rotor, a set of non-similar triplex redundant sensor system program is brought forward based on model electrically controlled rotor. Then an improved voting algorithm is performed, which can improve the fault tolerance of the sensor system. Simulation results show the validity of the improved algorithm. Fi- nally, experiments are conducted based on flap sensors, and the results show that the designed scheme and the improved voting algorithm can effectively improve the reliability of the sensor system.

关 键 词：电控旋翼 余度设计 表决算法 非相似余度 

分 类 号：V241.01[航空宇航科学与技术—飞行器设计]