Ultrahigh-precision timing method and device based on reflective memory network

Abstract

The invention relates to the technical field of time and space consistency of a simulation node in semi-physical simulation and discloses an ultrahigh-precision timing method and device applied to a semi-physical simulation system. The devices employed in the method comprise time management computers, clients and center optical fiber HUBs. The time management computers are connected with upper ends of the center optical fiber HUBs through optical fibers. The lower ends of the center optical fiber HUBs are connected with clients through the optical fibers. The middle ends of the center optical fiber HUBs of adjacent subsystems are connected through the optical fibers. According to the method and the device, network timing is carried out on each node device of the system through a reflective memory network, the difficulty that a massive semi-physical simulation system is many in user nodes and dispersed in employment is overcome, the high timing of the massive semi-physical simulation system is ensured, and the timing precision reaches a microsecond level. The designed timing device is simple in structure and low in development and maintenance cost, and is convenient for engineering realization.

Description

technical field [0001] The present invention relates to the technical field of time-space consistency of simulated entities in semi-physical simulation, and in particular to an ultra-high-precision time unification method and device based on reflective memory network. The system is especially suitable for a large-scale simulation test system composed of multiple hardware-in-the-loop simulation test systems deployed in different locations. Background technique [0002] The time unified system, referred to as Timing System, is broadly defined as a complete system composed of various electronic devices, providing standard time and frequency signals to achieve the unification of time and frequency of the entire system. In a large-scale hardware-in-the-loop simulation test system, if the time references between the simulation platforms and the devices in the platform are inconsistent, coupled with information generation and transmission time errors, information transmission delay...

AI Technical Summary

Problems solved by technology

However, for safety reasons, large hardware-in-the-loop simulation systems are generally physically isolated from public networks such as the Internet, and most network timing devices currently use the NTP (Network Time Protocol) protocol or SNTP protocol (simplified NTP). The synchronization time accuracy is not high under the Windows operating system

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