DIMA (distributed integrated modular avionics) system evaluation and optimization method

Abstract

The invention belongs to the technical field of aviation equipment design and discloses a DIMA (distributed integrated modular avionics) system evaluation method. The method includes: performing physical layer modeling, and mapping hardware equipment in a DIMA system to a mounting space to create a two-dimensional physical layer mapping vector; performing functional layer modeling, and mapping subtasks in the DIMA system to the hardware equipment according the known system-task-subtask tree to create a two-dimensional functional layer mapping vector; performing priority ranking on multiple performance evaluation indexes, and building a DIMA system multi-target performance description function set; substituting the physical layer mapping vector and the functional layer mapping vector into the DIMA system multi-target performance description function set to obtain a DIMA system evaluation result. The invention further discloses a DIMA system optimization method.

Description

technical field [0001] The invention belongs to the technical field of aviation equipment design, and in particular relates to a distributed comprehensive modular avionics DIMA system evaluation method and an optimization method. Background technique [0002] With the increasingly perfect and complex functions of aircraft (especially large and medium-sized civil aircraft), the on-board electronic system has become increasingly complex and large, which has brought great challenges to the transmission and processing of on-board information. A large amount of data requires security, Timely, accurate and complete transmission and processing, aircraft onboard system design (especially civil aircraft onboard electronic system architecture) is directly related to the means, strategies and methods of airborne electronic system integration, comprehensive testing and verification, and is the key to aircraft development One of the technical issues. [0003] The early airborne equipmen...

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Problems solved by technology

However, the equipment is directly given in the literature, and the process of selecting from multiple alternative equipment is not covered; the performance indicators for optimization in the literature focus on the weight and various costs considered from the economic point of view, and lack of safety considerations. Considering a more important type of reliability index in the design of avionics systems; all constraints and performance indexes in the literature are limited to linear functions, which cannot fully describe various situations in actual engineering applications; and in the literature to solve a The series of Pareto optimal solutions ignore the characteristics of avionics systems in aviation applications. Different performance indicators (objective functions), especially reliability indicators, have different priorities, which should be considered in optimization

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