A novel AQM algorithm based on feedforward model predictive control

作者：Wang, Ping; Zhu, ChaoJie; Yang, XiaoPing^*

来源：International Journal of Communication Systems, 2018, 31(12): e3711.

DOI：10.1002/dac.3711

• active queue management
• disturbance observer
• feedforward model predictive control
• robust performance

Developing feedforward model predictive controller as an active queue management (AQM) scheme is studied in this paper. MPC is an advanced control strategy for AQM. However, the conventional MPC is usually an implementable form of feedback MPC. In this paper, a feedforward and feedback optimal control law is presented. It is a clean, easily implementable, version of model predictive control that incorporates feedforward. Firstly, we use the nominal fluid model to design the feedforward control input so that the output tracks the given queue length with small error. Furthermore, in order to achieve robust performance and to reject the (unmeasured) disturbance, the feedback component is designed. In particular, a disturbance observer is incorporated into the prediction output in standard feedback MPC. This framework can significantly improve performance in the presence of measurement noise and certain types of model uncertainty. Finally, the simulation results show the effectiveness of FF-AQM algorithm.

• 出版日期2018-8
• 单位汽车仿真与控制国家重点实验室; 吉林大学