To meet the demand of future information warfare， it is of great significance to build a digital parallel battlefield system for analyzing the actual battlefield system. Therefore， based on the related technologies of parallel system and digital twin， the ACP method of artificial system， computational experiment and parallel execution is used in this study， and the construction idea of digital parallel battlefield system is proposed. The construction process of artificial battlefield is introduced in detail from the aspects of battlefield entity， service， twin data and twins. The parallel execution flow of actual battlefield and artificial battlefield is analyzed. The method proposed in this study can provide the basis for commanders to design the combat plans， make the combat plans， organize the combat cooperation， and command and control the battle situation more quickly and accurately.

The electrical connection of each device inside the ultra-micro aerial vehicle（UMAV）， mainly relies on the traditional way of lead wire welding. There are many problems in this way， such as low efficiency， error-prone， easy to broken welding wire， difficult debugging， etc. Ordinary wire-type cables and connectors are easy to use， but too bulky to suit the UMAV. A design method of fuzz button flexible electrical connection component for UMAV is proposed. The fuzz button component is used as the connector， the rigid-flexible joint plate is used as the transmission cable， and the three-dimensional design of aircraft structure is combined to realize the reliable electrical connection of various electrical devices inside the UMAV.