Multi-body Dynamics Parameter Determination System and Method Based on Distributed Time Trigger

Abstract

The invention discloses a multi-body dynamics parameter determination system based on the distributive time trigger and a method thereof. The method comprises the following steps: firstly, a system architecture model based on a time-triggered data bus is established, wherein each aircraft system simulation node is connected onto the bus and comprises multiple simulation modules; secondly, a system dynamics parameter is subjected to calculation through the guiding of the dynamics simulation modules; thirdly, a single aircraft system inner closed-loop simulation process is implemented through a system inner data receiving and dispatching module; fourthly, data exchange is implemented through an outer receiving and dispatching module and other aircraft system simulation nodes; fifthly, the dynamic parameters in a next time is obtained through calculation via a differential equation or a linearization formula, and the synchronization of a distributed system multi-body dynamics parameter is achieved.

Description

technical field [0001] The invention relates to a system and method for determining multi-body dynamic parameters based on distributed time triggering, and belongs to the field of spacecraft ground simulation tests. Background technique [0002] According to the overall plan of the manned spaceflight project, the manned space station is constructed through on-orbit assembly. The space station is launched into space by multiple independent modules, and then the space station is finally formed by rendezvous and docking with each other. During this period, there are also some manned spaceships. Dock and dock with the cargo spacecraft at the space station. [0003] In the simulation test and test verification process of the GNC (GNC is guidance navigation and control) subsystem, it is necessary to face the situation that multiple aircraft work in space at the same time, so it is necessary to solve the technical problems of multi-aircraft joint simulation and verification. In th...

AI Technical Summary

Problems solved by technology

[0005] a) Insufficient computing resources: a single CPU cannot complete the calculation of dynamic parameters of multiple aircraft within the simulation cycle;

[0006] b) It is difficult to synchronize tasks at the system level, and it is impossible to achieve high-speed synchronization and sharing of data in large systems using traditional architectures

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