1394 bus load simulation modeling method based on petri net

Abstract

The invention belongs to the technical field of airborne system bus simulation modeling and evaluation, and particularly relates to a 1394 bus load simulation modeling method based on a petri network. Comprising the following steps: step 1, constructing a 1394 network model which comprises a plurality of petri network position nodes; step 2, defining the number and meaning of petri net position nodes; 3, defining the transition number and meaning between the petri net position nodes; and 4, carrying out simulation analysis. According to the method, dynamic simulation modeling of the 1394 bus can be realized, the analysis of the bus performance can be accurately completed, the evaluation of the comprehensive performance of the system can be realized, the accuracy and efficiency of bus performance evaluation are greatly improved, the top-layer architecture design of the system is optimized, iteration links in the system design process are reduced, and the system design efficiency is improved. The design cost is greatly saved, and the working efficiency is improved.

Description

technical field [0001] The application belongs to the technical field of airborne system bus simulation modeling and evaluation, and in particular relates to a petri net-based 1394 bus load simulation modeling method. Background technique [0002] In the design and development process of the UAV system, the data bus, as the carrier of cross-linked data, also plays a decisive role in the function and performance of the system. In the past, the performance evaluation of the airborne system bus mainly relied on simple estimation or system hardware-in-the-loop tests to verify the performance of the airborne system bus. The traditional bus load performance evaluation method has large errors, and a large reservation needs to be reserved in the design, resulting in low bus utilization, which brings great difficulties to the design of data transmission between systems. [0003] The 1394 bus is a new type of airborne bus with fast transmission rate, large number of nodes on the bus,...

AI Technical Summary

Problems solved by technology

The traditional bus load performance evaluation method has large errors, and a large reservation needs to be reserved during design, resulting in low bus utilization, which brings great difficulties to the design of data transmission between systems

[0003] The 1394 bus is a new type of airborne bus with fast transmission rate, large number of nodes on the bus, and complex information interaction. There is no relevant literature on the modeling and simulation of this type of bus. Currently, the existing bus design methods cannot support the system 1394 bus. Simulation of data delay, scheduling capability evaluation, etc., and the new generation of airborne system bus design has an urgent demand for 1394 bus load and performance evaluation. Therefore, a method for characteristic simulation modeling of the airborne system 1394 bus is developed is the key to solving the above problems

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