摘要
合理调配有限的带宽资源,尽可能地降低网络对系统性能的影响,以满足控制系统动态性能和实时性的要求是网络化控制领域亟须解决的关键问题。结合CAN网的运行特性,提出基于抖动的带宽优化调度算法。在满足控制系统动态性能和网络可调度性条件下,确定网络化控制系统中各控制闭环的最优采样周期和初相,在兼顾周期抖动对控制闭环动态性能影响的同时合理地调配带宽资源,使系统具有较高的带宽资源利用率。
The key issue of analysis and design of the NCSs is to assign the limited bandwidth resource properly so that the network influence on the controlled plants is as little as possible and the real-time requirement and the control performance requirement are both satisfied. Jitter-dependent optimal bandwidth scheduling algorithm for CAN-based NCSs is proposed. It finds the optimal sampling period and the optimal initial phase for each control loop under both constraints of control performance and network schedulability such that the bandwidth resource is allocated properly and utilized efficiently within the acceptable range of jitter for the dynamic performance.
出处
《系统仿真学报》
EI
CAS
CSCD
北大核心
2005年第5期1115-1119,共5页
Journal of System Simulation
基金
山西省青年科技基金(20051020)
国家自然科学基金(60074011
60174009)
