中文摘要：

文章从控制系统与实际网络相结合构成网络控制系统出发，应用动态数据交换（DDE，Dynamic Data Exchange）协议和Socket网络通信技术，构建了基于Matlab／Simulink的网络控制系统仿真平台。以起重机为网络远程被控对象，通过仿真平台将实际网络引入起重机控制系统，揭示了网络延迟对该系统的影响。

英文摘要：

Considering the integration of control system and real network and applying Dyramic Data Exchange（DDE） protocol and Socket communication technology, the networked control system simulation platform based on Matlab/Simulink is constructed. Taking the crane as the remote controlling object and through the simulation platform, the real network is introduced into the crane control system, and this reveals the influence of the network delay on the system