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Fault simulation method for swing type infrared earth sensor

A technology for earth sensor and fault simulation, which is applied to instruments, measuring devices, etc., can solve the problems of undiscovered swing digital earth sensor fault simulation public information, etc.

Active Publication Date: 2013-04-03
BEIJING INST OF CONTROL ENG
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  • Abstract
  • Description
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Problems solved by technology

[0004] No public information has been found on the failure simulation of the oscillating digital earth sensor

Method used

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  • Fault simulation method for swing type infrared earth sensor
  • Fault simulation method for swing type infrared earth sensor
  • Fault simulation method for swing type infrared earth sensor

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Embodiment Construction

[0035]The method of the present invention is aimed at the fault mode of a certain type of swinging infrared earth sensor, divides the product into modules based on functions, analyzes all input signals and output signals of this type of product, and analyzes the input and output information flows of each module, The impact of module-level faults on the functions of other modules and the output measurement points of the entire product is established. Therefore, a fault modeling is carried out for each functional module, and a fault simulator of this type of sensor is formed according to its working principle. The fault simulator plays an important role in the simulation of the control system design and the verification of the correctness of the design.

[0036] The thought of the method of the present invention is, at first only consider the working principle of the swing type infrared earth sensor, obtain the theoretical signal output of the part according to the external input...

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Abstract

The invention provides a fault simulation method for a swing type infrared earth sensor. The method comprises the following steps: dividing function modules according to a real infrared earth sensor, carrying out modeling on normal operating process of each function module, analyzing results according to a fault mode on the basis of a normal operation model, superposing a non-linear function and corresponding switches, simulating a variety of fault performances and cascading the fault model of each function module so as to obtain a fault simulator for the whole swing type infrared earth sensor. Fault parameters can be input as needed so as to allow the fault simulator to simulate a variety of faults; the fault simulator can be used in a schematic design of a satellite controlling system, mathematical simulation and subsystem testing and can examine correctness of designing and realization of fault diagnosis and fault reconstruction of the satellite controlling system.

Description

technical field [0001] The invention relates to a simulator of a swinging infrared earth sensor, which can be used in various tests of the spacecraft control system, and can also be used in the desktop joint test of the control subsystem, mathematical simulation, software test and satellite simulator. Background technique [0002] Oscillating infrared earth sensors are widely used in three-axis stable satellites in geosynchronous orbit because of their excellent performance. In the infrared earth sensor simulator used in the test of geosynchronous orbit satellites developed in my country, the attitude data is basically directly used to construct the output of the infrared earth sensor. This method can meet the needs of system testing and mathematical simulation, but its Does not fully reflect the physical characteristics of the infrared earth sensor. [0003] After the successful development of the oscillating digital earth sensor, it has been widely used in my country's new...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
Inventor 刘新彦田信灵刘旭力王南华
Owner BEIJING INST OF CONTROL ENG
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