A real-time and efficient distributed hardware-in-the-loop simulation system construction method

Abstract

A real-time and efficient distributed semi-physical simulation system construction method comprises seven steps that a simulation system and a semi-physical simulation interface are respectively arranged on different host computers to form a distributed semi-physical simulation system together with a physical system; the semi-physical simulation interface is arranged as a time-controlled member; the host computer of the semi-physical simulation interface is connected with a global position system (GPS) receiver through a serial port, and the serial port is initialized; a program main thread of the semi-physical simulation interface is in clock synchronization with a GPS; the program main thread of the semi-physical simulation interface sends synchronization information packets to the simulation system and the physical system regularly; clock synchronization among all members of the semi-physical simulation system is achieved; and communication data processing is achieved by a program auxiliary thread of the semi-physical simulation interface. According to the real-time and efficient distributed semi-physical simulation system construction method, computing resources and system overheads are saved, a layered mixing clock synchronization method is adopted to enable a simulation time and the astronomical time to be in a specified constrained relationship, communication data interaction and processing are achieved, and instantaneity of large-scale and complicated semi-physical simulation systems is guaranteed.

Description

technical field [0001] The invention relates to a real-time and efficient distributed semi-physical simulation system construction method, which belongs to the technical field of semi-physical simulation. Background technique [0002] Computer system simulation technology is a comprehensive technology that uses related technologies to conduct dynamic operation test research on actual or imagined systems. In theory, computer simulation embodies the methodology of experimental thinking and has scientific prioritization. It provides an advanced method for the analysis, research, testing, evaluation, development and skill training of actual systems, especially complex large systems. It has promoted the development of those disciplines that used to be dominated by qualitative analysis to the quantitative direction, and achieved remarkable benefits in related application fields, especially in the military field, for the design and development of new weapons, weapon system improvem...

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Problems solved by technology

Among them, the research on real-time simulation algorithm is relatively mature, which mainly adopts real-time integration algorithm, fast function difference algorithm, etc.; for the timing analysis of simulation system, it is the simulation technology field to reasonably allocate simulation tasks and handle the relationship between simulation frame time. Problems to be solved; the time delay and compensation problems caused by hardware are mainly determined by the performance of the hardware itself; and the data communication delay of the hardware-in-the-loop simulation system is caused by the process of transmitting data and information between members of the hardware-in-the-loop simulation system. If the problem of real-time communication between members is not properly handled, this part of the time delay will have a serious impact on the real-time performance of hardware-in-the-loop simulation

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