Wang Jianhua, Fan Fuqiang, Yu Yanye, Du Shuxin, Guo Xiaorui
Huzhou Key Laboratory of Intelligent Sensing and Optimal Control for Industrial Systems, School of Engineering, Huzhou University, Huzhou, Zhejiang, China.
PeerJ Comput Sci. 2025 Jan 6;11:e2580. doi: 10.7717/peerj-cs.2580. eCollection 2025.
In this article, the robust model predictive control (RMPC) problem is investigated for a class of polytopic uncertain systems over high-rate networks whose signal exchanges are scheduled by the FlexRay protocol (FRP). During signal measurement, a high-rate network is applied to broadcast the data from the sensors to the controller efficiently. The FRP including the characteristics of event-triggered mechanism and the time-triggered mechanism is embedded into the high-rate network to regulate the data transmission in a circular period which can improve the flexibility of data transmission. With the aid of the Round-Robin and Try-Once-Discard protocols, a new expression of the measurement model is formulated by the use of certain data holding strategies. Subsequently, taking both high-rate networks and FRP into account, sufficient conditions are obtained by solving a time-varying terminal constraint set of an auxiliary optimization problem. In addition, an algorithm including both off-line and on-line parts is provided to find a sub-optimal solution. Lastly, two numerical simulations are carried out to substantiate the validity of the proposed RMPC strategy which is based on FRP and a high-rate network.
在本文中,针对一类多面体不确定系统在高速网络上的鲁棒模型预测控制(RMPC)问题展开研究,该高速网络的信号交换由FlexRay协议(FRP)调度。在信号测量期间,采用高速网络将传感器数据高效地广播给控制器。包含事件触发机制和时间触发机制特性的FRP被嵌入到高速网络中,以在一个循环周期内调节数据传输,这可以提高数据传输的灵活性。借助循环调度和一次尝试丢弃协议,通过使用特定的数据保持策略构建了测量模型的新表达式。随后,综合考虑高速网络和FRP,通过求解一个辅助优化问题的时变终端约束集获得了充分条件。此外,提供了一种包含离线和在线部分的算法来找到次优解。最后,进行了两个数值仿真,以证实基于FRP和高速网络所提出的RMPC策略的有效性。