BP-PID在无线网络控制系统中的应用  

Application of BP-PID in Wireless Network Control System

作　　者：李明 付国良 郭美世 赵俊峰 LI Ming;FU Guoliang;GUO Meishi;ZHAO Junfeng(Do-fuoride Chemical Co.,Ltd.,Jiaozuo 454006,China)

机构地区：[1]多氟多化工股份有限公司,河南焦作454006

出　　处：《仪表技术》2020年第4期29-32,46,共5页Instrumentation Technology

摘　　要：为了处理无线网络的引入对控制系统带来的不确定时延干扰问题,结合PID控制器和BP神经网络的学习能力,设计了具有神经网络调节能力的综合PID控制器。该控制器首先获得无线网络控制系统的输入、输出和偏差信息,而后通过不断地调整BP神经网络的权值来对PID控制器的三个参数进行整定。当PID控制器获得整定后的参数后,会通过增量式算法计算出被控对象的输入信号。为验证该控制器的性能,利用Matlab的TrueTime工具箱搭建出了基于无线网络控制系统的实时仿真环境。仿真数据表明,BP-PID控制器比单一的PID控制器具有更强的抗干扰性,它具有的在线整定能力弥补了单一PID控制器的不足。In order to deal with the uncertain time delay interference of the control system brought by the wireless network, a BP-PID controller is designed which combines the PID controller and the learning ability of the BP neural network. The controller obtains input, output and error information of wireless network control system and then tune these three parameters of PID by adjusting the weights of neural network. To verify the controller’s performance, a simulation environment of wireless network control system is built through the TrueTime toolbox in Matlab. The simulation data show that the BP-PID controller has stronger anti-interference ability than the single PID controller. Its online tuning ability makes up for the shortcomings of the single PID controller.

关 键 词：无线网络控制系统 PID 参数整定 

分 类 号：TP181[自动化与计算机技术—控制理论与控制工程]