基于因特网远程控制系统的改进广义预测控制方法

Improved GPC scheme in the Internet based on telecontrol systems

针对基于因特网远程控制系统中网络存在的不确定延时和数据包丢失,采用改进的Sm ith补偿控制算法和改进的广义预测控制算法相结合,研究了在网络控制中利用广义预测控制中冗余控制信息的方法,采用了对控制信息进行反馈和对控制信息加上时间标签的方案,并进行了仿真。结果表明,该方法能够动态补偿延时,利用冗余控制信息,在预测模型准确时,能解决数据包丢失引起性能下降问题。

Aiming at uncertain time delay and packet loss in the Internet based on telecontrol system, strategy combining the improved Smith algorithm with the Generalized Predictive Control （GPC） is proposed and feedback method with control information signing with time stamp is presented, then simulated this methed. Simulation results show that these strategies can dynamically compensate delay and utilization of redundant control information can reduce the performance degradation induced by packet loss when predictive model is accurate.