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Fault detection method and device for satellite simulated sun sensor

A sun sensor and sun-simulating technology, which is applied in the field of fault detection of satellite simulated sun sensors, can solve problems such as poor fault detection accuracy, inability to realize accurate quantitative diagnosis, difficulty in adapting to complex changes in the satellite's on-orbit working state, etc., to achieve adaptability High performance and versatility, and the effect of improving accuracy and reliability

Active Publication Date: 2020-01-14
BEIJING GUODIAN GAOKE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above qualitative diagnosis methods rely on manual experience, cannot achieve accurate quantitative diagnosis, and the accuracy of fault detection is poor, and it is difficult to adapt to the complex changes in the satellite's on-orbit working status

Method used

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  • Fault detection method and device for satellite simulated sun sensor
  • Fault detection method and device for satellite simulated sun sensor
  • Fault detection method and device for satellite simulated sun sensor

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Experimental program
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Embodiment 1

[0057] The embodiment of the present invention provides a fault detection method for a satellite simulated sun sensor, which utilizes satellite real-time telemetry data, judges the control mode word and sailboard state telemetry, and adopts real-time dynamic data prediction that matches the control mode, comprehensively Considering various influencing factors and boundary conditions, the predicted value of the output angle of the simulated solar sensor is obtained, and fault diagnosis is carried out on this basis, so that the abnormal changes of the measurement data can be quickly found, and the sensor fault can be effectively identified.

[0058] see figure 1 , the method specifically includes the following steps:

[0059] Step 101: Obtain the telemetry data of the satellite in the current period.

[0060] Telemetry data includes solar ephemeris data, satellite roll attitude angle, pitch attitude angle and yaw attitude angle, satellite control mode word and telemetry value o...

Embodiment 2

[0104] see Figure 4 , the embodiment of the present invention provides a satellite simulated sun sensor fault detection device, the device is used to implement the simulated sun sensor fault detection method provided in the above embodiment 1, the device specifically includes:

[0105] An acquisition module 201, configured to acquire telemetry data of satellites in the current cycle;

[0106] A determining module 202, configured to determine whether the working mode of the satellite in the current period is a preset mode according to the telemetry data;

[0107] Calculation module 203, used to calculate the predicted value of the output angle of the simulated sun sensor through joint diagnosis if the working mode is the preset mode;

[0108] The judging module 204 is configured to judge whether the simulated sun sensor fails in the current period according to the predicted value and the telemetry value of the output angle.

[0109] When the preset mode is the ground working...

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Abstract

The invention provides a fault detection method and a fault detection device for a satellite-simulated sun sensor. The method comprises the following steps: acquiring telemeasuring data of a sun sensor in a current period; according to the telemeasuring data, determining whether the working mode of a satellite in the current period is a predetermined model or not, if so, calculating the predicted value of an output angle of the simulated sun sensor by means of a combined diagnostic mode; and judging whether the simulated sun sensor has faults or not in the current period according to the predicted value and a telemeasuring value, including an output angle, of the telemeasuring data. According to the embodiment of the invention, the predicated value of the output angle is calculated by means of the combined diagnostic mode; whether faults exist is quantitatively diagnosed by combining the predicted value and the telemeasuring value, including an output angle, of the telemeasuring data, and abnormal changes of the telemeasuring value are immediately and quickly found, so that the precision and reliability of satellite in orbit autonomic diagnosis and ground measuring data judgment are improved. The method and device are matched with a satellite control module, and are high in adaptability and universality, thereby laying a good foundation for intelligent autonomic diagnosis of the satellite.

Description

technical field [0001] The invention relates to the technical fields of aerospace technology and satellite fault diagnosis, in particular to a fault detection method and device for a satellite simulated sun sensor. Background technique [0002] The simulated sun sensor is equipped on the satellite. It controls the non-fixed wing sail to capture the sun and track the sun. It is used to measure the azimuth between the sun vector and the normal of the sail, so that the normal of the sail points to the sun. In order to ensure that the satellite obtains energy to the maximum extent, it can supply the electricity demand of each component of the satellite. Therefore, it is very important to accurately judge whether the simulated sun sensor is malfunctioning. [0003] At present, the fault diagnosis of the simulated sun sensor mainly adopts the qualitative diagnosis method, that is, the simulated sun sensor sees the sun area in orbit when the satellite is in the preset mode, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 吕强常武军彭进霖孔令波梁军民唐尧朱太平杨天光
Owner BEIJING GUODIAN GAOKE TECH CO LTD
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