Abstract: With the network workload increasing,the network resource will be limited and control performance of the subsystems in the networked control system(NCS)will be worsened.In order to improve the system quality of control (QoC)in this situation,a floating deadband feedback scheduling approach is proposed.Through dynamic selection of the deadband node and continuous assignment of the deadband range,QoC of the overall systems is enhanced with the limited network resource.Simulation results show that the ideas of floating deadband and continuous deadband range in the proposed approach are effective to increase the system QoC in the narrow network bandwidth circumstance.