Dynamic bandwidth-allocation for networked motion control systems

To improve the static allocation of the limited bandwidth in networked motion control systems,we propose a dynamic bandwidth-allocation method based on the control-performance and the current network status.Under the constraint of the minimal available bandwidth of all loops,the residual bandwidth is optimally allocated by the user-defined cost function.This maximizes the system performance by minimal bandwidth consumption.Three typical bandwidth allocation schemes are given respectively for the equilibrium status,the disturbed status and the maximal-demand status.Simulation results validate the effectiveness of the proposed dynamic bandwidth allocation algorithm.