Rapid designing method for GNC (Guidance, Navigation and Control) system of spacecraft

Abstract

The invention discloses a rapid designing method for a GNC (Guidance, Navigation and Control) system of a spacecraft. The method comprises the following steps of (1) dividing the GNC system of the spacecraft into a dynamic model and an even-driven model, and performing modeling by adopting a Simulink model base and a Stateflow finite state machine respectively; (2) employing an industrial control computer installed with a VxWorks operating system as a hardware system running the GNC system, and compiling a related VxWorks driver into a Simulink base file; (3) connecting each model and the base file in a Simulink edition environment to form a complete MDL (Microsoft Data Link) file of the GNC system according to information flow and data dependence relationship; (4) converting the MDL file into a target code, compiling the target code, and linking an auxiliary file to generate an executable target program; (5) downloading the executable target program to the industrial control computer through a network, and running the executable target program on the industrial control computer, thereby obtaining a GNC system prototype.

Description

technical field [0001] The invention belongs to the field of control, and relates to a rapid design and realization method of a spacecraft guidance, navigation and control (GNC) system. Background technique [0002] The GNC system is an important part of the spacecraft. The design process of the traditional spacecraft GNC system is roughly as follows: (1) Complete the scheme design and algorithm simulation work according to the overall requirements of the spacecraft; (2) Design the technical realization of the control scheme, and complete the hardware configuration of the system and the index decomposition of components , information flow, protocol formulation, etc.; (3) complete the design, manufacture, and hardware and software implementation of each component; (4) after the development of all component products, integrate the physical objects and conduct system-level tests. [0003] The disadvantages of the traditional design process of the above-mentioned spacecraft GNC...

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of the traditional design process of the above-mentioned spacecraft GNC system are mainly reflected in: the lack of an effective overall design at the initial stage of the design task, mainly referring to empirical data and manual estimation, so that many interface and timing problems are only exposed in the system-level test stage, thus Caused iterations in the design process, serious may cause subversive impact

Moreover, due to the asynchronous production cycle of each stand-alone product, the system may not be able to close the system due to the lack of a key stand-alone in the initial stage of system integration, resulting in a lag in the verification process, which directly affects the overall progress of the task.

Images