IMA recovery method conforming to AC 20-170
An automatic recovery and failure technology, applied in the direction of response to error generation, redundant data error detection in operation, electrical components, etc., can solve IMA cabinet failure, abnormal operation of resident function, and non-permanent IMA hardware components. problems such as failures to achieve the effect of enhancing availability and improving security
Pending Publication Date: 2022-04-15
XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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[0002] During the flight of the aircraft, the IMA system may experience abnormal operation of the resident function or failure of the IMA cabinet, but the actual installed IMA hardware components are not permanently faulty.
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[0033] Based on the requirements of the recovery function in AC 20-170, the present invention proposes a method for implementing system recovery by combining automatic recovery and manual recovery, a combination design method based on automatic recovery of classification and classification, supplemented by manual recovery, Different countermeasures are proposed for different (resident function) fault types, which enhance the availability of the IMA system, improve the safety of the IMA system, and provide guarantee for the airworthiness review of the IMA system.
[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0035] An IMA recovery method that complies with AC 20-170, based on the automatic recovery of classification and classification, and a combined design method supplemented by manual recovery. Different countermeasures are proposed for different (resident function) fault types, and the IMA is enhanced...
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The invention belongs to the technical field of airborne avionics system IMA, and particularly relates to an IMA recovery method conforming to AC 20-170. Comprising the steps that 1, automatic recovery functions of different levels and different module types are triggered according to fault classification, and the fault classification comprises a resident application fault, a hardware module resource fault and a platform resource fault; 2, if the automatic recovery function fails to eliminate the fault of the resident application or the hardware module and the safety level of the related function of the resident application or the hardware module with the fault is high, the current fault is reported to the flight crew of the cabin; and step 3, receiving external triggering of the flight crew to complete IMA recovery. The availability of the IMA system is enhanced, the safety of the IMA system is improved, and a guarantee is provided for airworthiness review of the IMA system.
Description
technical field [0001] The invention belongs to the technical field of IMA of an airborne avionics system, and in particular relates to an IMA recovery method conforming to AC 20-170. Background technique [0002] During the flight of the aircraft, the IMA system may experience abnormal operation of the resident function or failure of the IMA cabinet, but the actual installed IMA hardware components are not permanently faulty. AC 20-170 states that for functions that must be continuously operational for system security assessments, the IMA system must have the ability to restart (these) resident functions. [0003] Advisory Circular AC 20-170 "Integrated Modular Avionics Development, Verification, Integration, and Approval Using RTCA DO-297 and TSO-Cl53 for IMA Development, Verification, Integration, and Approval Using RTCA DO-297 and Technical Standard Order -Cl53), is an advisory circular issued by the US Federal Aviation Administration (FAA) for DO-297, affirming that DO...
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IPC IPC(8): G06F11/07G06F11/14H04L41/06
Inventor 韩嫚莉李鹏高瑞坤高杨刘宇李成文
Owner XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA