基于TrueTime的无线网络仿真模型研究

为解决无线网络控制系统中传输模型的问题，建立了无线网络传输中网络延时和数据丢包之间的数学模型，为无线网络控制器的设计提供了充分的无线网络特性，可以将网络实时仿真技术应用到对无线网络控制系统的研究中，提出了用基于Matlab／Simu—link的网络仿真工具箱TmeTime构建一个无线网络的仿真模型。该仿真模型中的节点可自由移动，且有干扰节点，采用了AODV路由协议进行路由的自主选择，以实现两个节点之间互相通信。然后通过仿真，记录下两节点之间发送、接收数据的时间。结果表明，该模型可以模拟无线网络控制系统中传感器、控制器和执行器之间的通信，可以作为研究无线网络控制传输模型的仿真模型。

Wireless network simulation model research based on TrueTime

In order to solve the problems of the transmission model of the wireless network control system, the mathematical model between the network latency and packet data loss was built, the full wireless features were supplied for the controller design. A simulation model of wireless network was established using the network simulation toolbox TrueTime based on the Matlab/Simulink. All nodes in this simulation model could move freely, and the mode had several interference nodes, the AODV routing protocols were adopted to choose routing, for implementing the communication between two nodes. Then via simulation, the sending and receiving time of the two nodes communication was recorded. The ex- perimental results show that this simulation model could simulate the communication among the sensor, actuator and controller, be the simula- tion model to investigate the transmission model of the wireless network control system.