Active Disturbance Rejection Control for Tension Regulation of Stainless Steel Strip Processing Line

To describe sagging dynamics of processing stainless steel strip, the concept “equivalent elastic modulus” is introduced in this paper. Based on which, a tension dynamic model of steel strip is then built. Considering the nonlinear nature and the rapid change in operating conditions of the stainless steel strip processing line, and industrial controller cannot resist disturbance effectively, a tension control method based on active disturbance rejection control (ADRC) strategy is presented. Meanwhile, the parameter tuning method for this ADRC is also proposed. Simulation results show the effectiveness of the proposed strategy.

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