电传飞控系统监控算法的优化和仿真  

Improvement and Simulation of Fly-by-wire System Monitoring Algorithm

作　　者：王发明[1] 王伟[1] 段晓军[1] 

机构地区：[1]西北工业大学无人机特种技术国家重点实验室,陕西西安710065

出　　处：《计算机仿真》2011年第7期67-70,共4页Computer Simulation

摘　　要：研究飞控系统监控问题,应能完成信号正确检测和定位故障信号。针对比较监控电传系统的虚警率和漏检率,由于各种因素的影响,算法流程和阈值设计一直是监控算法要解决的问题。为了保证系统的可靠性和正确性,提出了改进的监控算法,根据统计学原理提出了预设阈值方法。最后通过给出了判定故障的真值表。在MATLAB仿真平台上,建立了具有典型性的两个信号模型,并对改进的算法进行了仿真验证。结果表明,改进的算法具有阈值预设合理、算法简单等优点,大大降低了虚警率和漏检率,具有实际的监控效果。The false alarm rate and missed rate of the redundant system are affected by many factors, the most im- portant and difficult factors are the algorithm design and threshold setting. The shortcomings of traditional algorithm used in compare monitoring af quadruplex redundant fly-by-wire system analog signals are described in this paper. An improved algorithm is put forward to solve the shortcomings. The method of pre-set thresholds of the new algo- rithm is based on statistical principle. The aircraft sensors＇ signal acquisition in flight is established by two typical models, and the improved algorithm is simulated with MATLAB. The results of simulation prove that the improved algorithm is both simple and effective and can solve the shortcomings. The improved algorithm can be used as a reference and direction to the real work.

关 键 词：电传飞控系统 四余度 比较监控 阈值 

分 类 号：TP302.8[自动化与计算机技术—计算机系统结构]