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介绍了控制系统向着分散化、网络化、智能化方向发展的趋势，探讨了现场总线技术在这个过程中发挥的重要作用，以及控制网络和数据网络的结合为自动化技术的发展所产生的影响。
The trend of decentralized, networked and intelligent control systems is introduced. The important role that fieldbus technology plays in this process is also discussed. The combination of control network and data network has also influenced the development of automation technology.