Automatic failure handling and protection method of deep space probe global navigation chart (GNC) system base on layered structure

Abstract

Disclosed is an automatic failure handling and protection method of a deep space probe global navigation chart (GNC) system base on a layered structure. The automatic failure handling and protection method of the deep space probe GNC system base on the layered structure comprises the steps of carrying out hardware protection to avoid a failure which can result in permanent damage or invalidation of other parts or other parts inside a part according to a result of failure mode and effects analysis (FMEA), judging whether the data of measuring points are normal with an infrared ray method for other failures, marking the states of parts and handling the data and state information to a controller for analyzing of system-level failures; carrying out failure analyzing according to the state information and the data of the measuring points handed to the controller: if hardware redundancy or analysis redundancy exists, a failure part is switched to a normal redundancy part; if the hardware redundancy or the analysis redundancy dose not exist, the next step is carried out; switching to a counter-glow orientation mode when the prior step can not position a failure source or no redundant backup can replace the failure source and gesture is pretty poor and directing is out of control, switching off equipments not necessary for flying of a deep space probe to reduce power consumption, and switching off a self-locking valve and switching to a control-stop mode to reduce propellant consumption of the probe when the probe is out of control, a pushing system spray gas at random and star bodies roll.

Description

technical field [0001] The invention belongs to the field of deep space detector fault processing and relates to an autonomous fault processing and protection method, which is suitable for the fault autonomous diagnosis, processing and protection of the deep space detector GNC system. Background technique [0002] For deep space exploration missions, the detection objects, purposes and environment of the spacecraft are different from the earth satellite system, which brings new challenges to the operation and control technology of the spacecraft. First of all, the flight time of the deep space exploration spacecraft is long, and the unknown factors in the deep space environment are many and complex, which increases the probability of encountering emergencies and failures of the GNC system and components of the spacecraft. Secondly, the communication delay between the deep space exploration spacecraft and the ground measurement and control station is large, and the signal may...

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Problems solved by technology

my country has also considered fail-safe technology in the design of deep space exploration spacecraft, but the current fail-safe function is rather messy, the fail-safe system has not yet been formed, and the autonomy is not enough

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