Spacecraft control system data validity identification method
A data validity and control system technology, applied in general control systems, control/regulation systems, testing/monitoring control systems, etc., can solve problems such as interruption of load work, threats to the safety of the entire satellite structure and energy security, and control divergence, etc. Achieve the effect of ensuring stable on-orbit operation, ensuring closed-loop performance indicators, and ensuring stable operation
Active Publication Date: 2020-11-10
BEIJING INST OF CONTROL ENG
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Problems solved by technology
The unreasonable introduction of invalid, erroneous, and illegal data may lead to a decline in control performance, fail to meet user needs, and cause load work interruption. The long-term effect of erroneous data may even lead to control divergence, which threatens the structural safety and energy security of the entire star.
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[0037] Taking a typical spacecraft control system as an example, it is assumed that the spacecraft control system is configured with 2 star sensors, 3 front-mounted gyroscopes + 1 oblique-mounted gyroscope, and 4 momentum wheels in a pyramid configuration. The star sensor and gyroscope are used as the attitude measurement sensor, and the momentum wheel is used as the attitude control actuator. The orbit calculation method on the satellite adopts the analytical orbit fitting method based on the 6-element number of the orbit. External system time calibration includes whole satellite time system time calibration, GPS / GNSS receiver time calibration, payload clock time calibration, ground time calibration, etc. Set the measurement data of star sensor B to slowly drift, and according to the present invention, the data validity of the spacecraft control system is identified, and the steps are as follows:
[0038] (1) According to the data usage sequence of the control system, first ...
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The invention belongs to the technical field of spacecraft control system stable operation, and relates to a spacecraft control system data validity identification method. According to the spacecraftcontrol system data validity identification design method provided by the invention, wrong data can be effectively identified and eliminated; the method comprises the steps of carrying out validity identification on sensor measurement data, carrying out validity identification on execution mechanism measurement data, carrying out validity identification on ground injection orbit data, carrying outvalidity identification on external system timing data, avoiding introducing error information into control calculation, ensuring the on-orbit stable operation capability of a spacecraft, and ensuring a closed-loop performance index. Stable and reliable operation conditions are provided for effective loads; the data validity judgment design method provided by the invention aims to eliminate unexpected data and ensure the stable operation of the control system in real time, and is an important protection mechanism which must be provided when the system has fault diagnosis and fault tolerance capabilities; the method is targeted to different data characteristics of various components of the control system, the multi-source information fusion capability is reflected, the designed data validity identification method is good in abstraction degree and high in universality, and misjudgment and missed judgment can be avoided.
Description
technical field [0001] The invention belongs to the technical field of stable operation of a spacecraft control system, and relates to a data validity identification method of a spacecraft control system. From the perspective of the stable operation of the spacecraft control system, this method proposes the basic design method and specific judgment criteria for the data validity judgment, including the validity recognition of the sensor measurement data, the validity recognition of the actuator measurement data, and the ground Injecting track data for validity identification and external system timing data for validity identification, the purpose is to ensure that there are effective means to prevent outliers, illegal data, wrong information, etc. from entering the system, affecting stable operation, and even causing safety risks. Background technique [0002] The spacecraft control system undertakes the attitude control and orbit control tasks of various high and low orbit ...
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IPC IPC(8): G05B23/02
CPCG05B23/0221
Inventor 王淑一刘潇翔蒋庆华张万利刘羽白石恒苏晏
Owner BEIJING INST OF CONTROL ENG
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