作　　者： ; ; ; ;

机构地区： 天津工业大学电气工程与自动化学院

出　　处： 《计算机技术与发展》 2010年第3期246-249,共4页

摘　　要： 文中对具有死区输入特性的一类Hammerstein系统提出了网络预测控制方法。此方法借鉴广义预测控制的思想,首先对Hammerstein模型的线性部分,求得中间变量的预测值,并通过对死区求逆得到控制信号的预测值。在被控对象的缓冲区中选取最靠近当前时刻的控制输入预测值作为当前的控制输入,以用来补偿网络诱导时延。实验结果表明,采用了广义预测控制之后,系统的响应速度明显提高。证明广义预测控制可以很好地补偿前向以及反馈通道的诱导时延。 In this paper, a network predictive control method is proposed for a Hammerstein- type system with dead - zone input. Based on the generalized predictive control （GPC）, calculating the predictive value of the intermediate variable for the linear part of the system. Then, by calculating the inverse of the dead-zone, the predictive values of the control signals are obtained. In the buffer of the plant, there is a value whose time stamp is closest to current, and it is chosen as the real control input. Finally the experimental platform verified the validity of the proposed scheme. The experiments results show that the generalized predictive control, the system response speed has irnproved significantly. Proof of generalized predictive control can compensate for a very good forward and feedback channel - induced delay.

关 键 词： 系统 网络控制系统 广义预测控制 网络诱导时延

领　　域： [自动化与计算机技术] [自动化与计算机技术]