Implementation method for guaranteeing real-time performance of semi-physical simulation through three-layer structure

Abstract

The invention discloses an implementation method for guaranteeing the real-time performance of semi-physical simulation by a three-layer structure, which aims at the real-time performance requirement of a semi-physical simulation system, starts from the top design and software and hardware, and is implemented by adopting a mode of reasonable division and mutual cooperation of hardware and software functions. A multi-core CPU is divided into two parts, wherein one part is that under RTX, threads where codes with high requirements for real-time performance are located independently occupy one CPU physical core respectively; the other part of the CPU is reserved in Windows to execute the codes that are time-consuming but not high in real-time requirement; the codes are divided into three layers on software, wherein the first layer is simulation and communication codes with high requirements on real-time performance; the second layer is a low-speed IO operation code; and the third layer is user interface codes. The division mode fully ensures that the real-time requirement of the semi-physical simulation is met, and ensures that threads where codes with high real-time requirement in the semi-physical simulation software are located can occupy CPU resources at any time and scheduling waiting does not occur. The third layer in the three-layer structure also provides a wide space for the design of the user interface, and the user interface of the third layer can use various UI design and programming languages based on the isolation effect of the second layer.

Description

[0001] 1 technical field [0002] The invention is applied to a realization method for guaranteeing the real-time performance of semi-physical simulations such as missiles / rockets, and belongs to the field of aerospace semi-physical simulations. [0003] 2 background technology [0004] 2.1 Half-physical simulation [0005] Semi-physical simulation is to add part of physical links on the basis of full digital simulation, which makes the original digital simulation must run in real-time simulation environment. The scheduling overhead of the operating system and the competition between threads will affect the real-time performance of hardware-in-the-loop simulation to a certain extent, and this effect will cause unexpected delays in the entire simulation loop, which will reduce the performance of hardware-in-the-loop simulation. Authenticity is not conducive to the restoration of the real environment. [0006] The semi-physical simulation is generally carried out by solving the...

AI Technical Summary

Problems solved by technology

[0015] However, under RTX, hyper-threading technology may cause the program to fall into an unexpected wait. In order to ensure the real-time performance of the hardware-in-the-loop simulation software, it is necessary to turn off hyper-threading

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