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Anomaly detection method for different types of parts of spacecraft attitude control system

An attitude control and anomaly detection technology, which is applied in the field of anomaly detection of different types of components in the spacecraft attitude control system, can solve the problems of spacecraft attitude loss, performance index decline, and threats to the entire star structure, achieving high abstraction, easy implementation, and good uniform effect

Active Publication Date: 2020-11-10
BEIJING INST OF CONTROL ENG
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Problems solved by technology

Once the attitude control system fails, it will lead to the decline of performance indicators and the interruption of the load task, and it may lead to the loss of the attitude of the spacecraft and even threaten the structure and energy security of the entire star.

Method used

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  • Anomaly detection method for different types of parts of spacecraft attitude control system
  • Anomaly detection method for different types of parts of spacecraft attitude control system
  • Anomaly detection method for different types of parts of spacecraft attitude control system

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Embodiment

[0054] In order to further illustrate the designed abnormal detection method for different types of components, a typical attitude control system is taken as an example, and star sensors, gyroscopes and earth sensors are used as attitude measurement sensors, and momentum wheels and thrusters are used as attitude control actuators. For the two star sensors A and B, first assume that the star sensor B fails, and the output of the three-axis attitude angle to the ground sets the output deviation. Such as figure 2 Shown is the three-axis attitude angle to the ground measured by star sensor A, image 3 is the three-axis attitude angle to the ground measured by star sensor B, and the output data of the two star sensors have passed the data validity self-inspection. Due to the redundant design of similar components, firstly, in the abnormal detection of similar components, it can be seen that the difference between the three-axis attitude angles measured by star sensors A and B exc...

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Abstract

The invention belongs to the technical field of stable operation of a spacecraft control system, and provides an anomaly detection method for different types of parts of a spacecraft attitude controlsystem in order to solve the problems of autonomous data anomaly diagnosis and fault location of the spacecraft control system. Aiming at the outputs of various sensors and actuating mechanisms, the outputs of different types of components are equivalently converted in combination with spacecraft attitude dynamics, kinematics and geometrical relationships, and an anomaly comparison result among the components is obtained by designing a detection method based on an anomaly judgment threshold among the different types of components. According to the credibility information of the parts participating in anomaly detection, autonomous detection and positioning of output anomalies among different types of parts are achieved.

Description

technical field [0001] The invention belongs to the technical field of stable operation of a spacecraft control system, and relates to an abnormal detection method for different types of components of a spacecraft attitude control system. Aiming at the output of various sensors and actuators, combined with the spacecraft attitude dynamics, kinematics and geometric relations, the outputs of different types of components are converted equivalently, and obtained by designing an inspection method based on abnormal judgment thresholds between different types of components The abnormal comparison results between components, and based on the reliability information of the components involved in the abnormal detection, realize the independent detection and positioning of output abnormalities among different types of components. Background technique [0002] With the development of spacecraft application fields and the advancement of aerospace technology, the spacecraft attitude cont...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
CPCG01C25/00G01C25/005Y02P90/02
Inventor 袁利刘潇翔王淑一蒋庆华宗红刘羽白
Owner BEIJING INST OF CONTROL ENG
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