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Multi-mode online real-time autonomous switching simulation system and method for GNC system

An autonomous switching and multi-mode technology, applied in general control systems, control/regulation systems, simulators, etc., can solve problems affecting the continuity of GNC system simulation, affecting the process and progress, and it is difficult to truly reflect the timing and logic of the GNC system. , to achieve the effect of solving long-term closed-loop simulation problems, improving efficiency, and reducing development costs

Active Publication Date: 2020-07-24
SHANGHAI AEROSPACE CONTROL TECH INST
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Problems solved by technology

Computer-in-the-loop digital simulation simulates the data of sensors and actuators through product models, which is difficult to truly reflect the timing and logic of the GNC system
However, the semi-physical simulation method in which the on-board computer, sensors and actuators are all in the loop will affect the process and progress of the closed-loop simulation of the GNC system if the physical product cannot be in place or the physical product fails, and will also affect the GNC system. Simulation Continuity

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  • Multi-mode online real-time autonomous switching simulation system and method for GNC system

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Embodiment Construction

[0031] A multi-mode online real-time autonomous switching simulation system for a GNC system, including a product model, a dynamics simulator, an autonomous fault diagnosis and switching unit, a matrix switching unit, a simulator, a satellite-borne GNC computer, and physical products. The physical product includes an attitude sensor, a navigation sensor and an actuator; the product model includes an attitude sensor product model, a navigation sensor model, and an actuator model. The attitude sensors include, but are not limited to, conventional sun sensors, earth sensors, magnetometers, inertial sensors, star sensors, ultraviolet sensors, and the like. The navigation sensors include, but are not limited to, satellite navigation sensors, optical navigation sensors, photoelectric navigation sensors, radio frequency navigation sensors, and the like. The actuators include, but are not limited to, flywheels, control torque gyro, thrusters and the like. The thrusters include but ar...

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Abstract

The invention belongs to the technical field of ground simulation experiments and tests of aircraft navigation guidance and control systems (GNC systems), and particularly relates to a multi-mode online real-time autonomous switching simulation system and a multi-mode online real-time autonomous switching simulation method for a GNC system. According to the system and the method, an autonomous fault diagnosis and switching unit collects an online signal of a matrix switching unit and a telemetry signal output by a satellite-borne GNC computer in real time, according to a data protocol format,the information such as a data frame header, frame counting and checksum is autonomously judged for judging the fault state of a signal link, and state switching between a product model and a physicalproduct is carried out in real time according to the fault condition. Because the state of the test site is not destroyed, signal fault analysis and diagnosis can be carried out through signal detection points.

Description

technical field [0001] The invention relates to the technical field of ground simulation test and testing of aircraft navigation guidance and control system (GNC system), in particular to a multi-mode online real-time autonomous switching simulation system and method for the GNC system. Background technique [0002] In the field of aerospace, the aircraft GNC system usually needs to carry out a large number of simulation experiments and tests in the design stage to verify the correctness of the GNC system design and the correctness of the GNC system software implementation, as well as to verify the correctness of the GNC system design logic and timing. Thereby ensuring the functionality and performance of the GNC system. [0003] At present, there are usually three methods for ground simulation verification of the aircraft GNC system: mathematical simulation, hardware (physical product) in-the-loop semi-physical simulation, and full physical simulation. [0004] The full ph...

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Application Information

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IPC IPC(8): G05B17/02
CPCG05B17/02Y02P90/02
Inventor 陈浩朱虹王向董晋芳武静张国柱刘赟郭旭升
Owner SHANGHAI AEROSPACE CONTROL TECH INST
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