Optimal Bandwidth Allocation and QoS-Adaptive Control Co-Design for Networked Control Systems Conference Paper uri icon


  • In this paper, we present a co-design methodology of dynamic optimal network-bandwidth allocation (ONBA) and adaptive control for networked control systems (NCSs) to optimize overall control performance and reduce total network-bandwidth usage. The proposed dynamic co-design strategy integrates adaptive feedback control with real-time scheduling. As part of this co-design methodology, a closed-loop ONBA algorithm for NCSs with communication constraints is presented. Network-bandwidth is dynamically assigned to each control loop according to the quality of performance (QoP) information of each control loop. As another part of the co-design methodology, a network quality of service (QoS)-adaptive control design approach is also presented. The idea is based on calculating new control values with reference to the network QoS parameters such as time delays and packet losses measured online. Simulation results show that this co-design approach significantly improves overall control performance and utilizes less bandwidth compared to static strategies.

name of conference

  • ASME 2007 International Mechanical Engineering Congress and Exposition

published proceedings

  • Volume 9: Mechanical Systems and Control, Parts A, B, and C

author list (cited authors)

  • Ji, K., & Kim, W.

citation count

  • 11

complete list of authors

  • Ji, Kun||Kim, Won-Jong

publication date

  • January 2007