带宽受限的CAN总线对数量化调度策略  

Scheduling strategy for logarithmic quantization under bandwidth constraints based on controller area network bus

作　　者：匡付华[1] 胥布工[1] 刘贵云[1] 

机构地区：[1]华南理工大学自动化科学与工程学院,广东广州510640

出　　处：《控制理论与应用》2011年第9期1183-1188,共6页Control Theory & Applications

基　　金：NSFC-广东联合基金重点资助项目(U0735003);国家自然科学基金资助项目(61174070)

摘　　要：研究了使用量化技术解决控制器局域网络(CAN)总线网络控制系统的带宽受限问题.首先,建立了多控制回路的网络控制系统模型,该模型综合考虑了采用对数量化器对采样信号进行量化和Bernoulli随机网络丢包过程.并针对量化误差和数据丢包,设计了控制器和观测器使得闭环系统指数均方稳定.然后根据控制性能最优化要求,设计了在带宽受限情况下的反馈网络调度器,提出了量化反馈调度策略.最后通过对3个独立控制回路组成的CAN总线系统进行仿真实验,验证了此调度策略的有效性和可行性.A logarithmic quantization strategy for solving bandwidth constraint problems is discussed.A multi-loop model with logarithmic quantized sampling signals and Bernoullian random packet losses on the network is established.To deal with the quantization error and the packet loss,we develop a controller and an observer for stabilizing the multi-loop system in the exponentially mean-square sense.Moreover,a quantization scheduling strategy under bandwidth constraints is presented to optimize the control performance.Finally,the effectiveness and feasibility of the quantization scheduling strategy are tested and validated through simulations of a controller area network（CAN） bus system with three control loops.

关 键 词：CAN现场总线 对数量化器 数据丢包 量化反馈调度 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]