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首页> 外文会议>AHS 59th Annual Forum Proceedings Vol.1 May 6-8, 2003 Phoenix, Arizona >Getting a Primary Fly-by-Light Control System into Flight
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Getting a Primary Fly-by-Light Control System into Flight

机译：使主要的光控飞行系统投入飞行

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摘要

A new redundant 4-axes 100% authority fly-by-light (FBL) control system with dissimilar hard- and software in an EC 135 helicopter asks for adequate methods for the development, verification and testing of such a complex system. The constraints on meeting the requirements, the tight cost and time schedule and getting the system successfully into flight are mastered by the following methods: high requirements traceability, early design prototyping, transparent change management, early development of test procedures and prototype testing, effective problem tracking and resolving mechanism, complete ground and robustness testing with full test coverage before the first flight. The ground integration testing was complicated by the high number of possible multiple failures to be analysed. A failure mode effect analysis (FMEA) with probability numbers of multiple failures screened out test cases for obligatory (Q >～10~(-9)/fh) and random (Q <10~(-9) /fh) execution. A global worst case failure condition set could be identified which included all multiple failures with regard to their failure effect. Flight testing has been successfully performed with 22 flights within a short time period of 3 weeks. The FBL control system worked trouble-free and the flight characteristics are equal to a standard series helicopter.
机译：EC 135直升机中具有不同硬件和软件的新型冗余四轴100％授权飞行控制系统（FBL）要求有足够的方法来开发，验证和测试这种复杂的系统。通过以下方法掌握了满足要求，严格的成本和时间表以及成功使系统投入运行的约束：高要求可追溯性，早期设计原型，透明的变更管理，早期开发测试程序和原型测试，有效问题跟踪和解决机制，完成全面的地面和稳健性测试，并在首次飞行之前进行全面的测试。由于要分析的大量可能的多个故障使地面集成测试变得复杂。失效模式影响分析（FMEA）具有多个失效概率，筛选出强制执行（Q>〜10〜（-9）/ fh）和随机执行（Q <10〜（-9）/ fh）的测试用例。可以确定全局最坏情况失败条件集，其中包括所有多个失败的失败影响。在3周的短时间内，已经成功进行了22次飞行的飞行测试。 FBL控制系统工作正常，飞行特性与标准系列直升机相同。

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