1#. • Basis Weight Control System
/PWFM1BSBNFUFS*EFOUJGJDBUJPO.FUIPE GPS#BTJT8FJHIU$POUSPM-PPQPG 1BQFSNBLJOH1SPDFTT :VO[IV4IFO 8FJ5BOH :VOHBOH-JV 1 . School of Electrical and Control Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi Province, 710021 , China 2 . School of Control Science and Engineering, Shandong University, Ji'nan, Shandong Province, 250061 , China "CTUSBDU The basis weight control loop of the papermaking process is a non-linear system with time-delay and time-varying. It is impractical to identify a model that can restore the model of real papermaking process. Determining a more accurate identification model is very important for designing the controller of the control system and maintaining the stable operation of the papermaking process. In this study, a strange nonchaotic particle swarm optimization (SNPSO) algorithm is proposed to identify the models of real papermaking processes, and this identification ability is significantly enhanced compared with particle swarm optimization (PSO). First, random particles are initialized by strange nonchaotic sequences to obtain high-quality solutions. Furthermore, the weight of linear attenuation is replaced by strange nonchaotic sequence and the time-varying acceleration coefficients and a mutation rule with strange nonchaotic characteristics are utilized in SNPSO. The above strategies effectively improve the global and local search ability of particles and the ability to escape from local optimization. To illustrate the effectiveness of SNPSO, step response data are used to identify the models of real industrial processes. Compared with classical PSO, PSO with time- varying acceleration coefficients (PSO-TVAC) and modified particle swarm optimization (MPSO), the simulation results demonstrate that SNPSO has stronger identification ability, faster convergence speed, and better robustness. ,FZXPSET basis weight control system; papermaking; system identification; particle swarm optimization; strange nonchaotic sequence %0* 10.26599/PBM.2023.9260004
Yunzhu Shen, PhD candidate; E-mail: jdshenyunzhu@163.com
*Corresponding author: Wei Tang, professor, PhD tutor; research interest: papermaking automation; E-mail: wtang906@163.com
Received: 14 November 2022; accepted: 24 December 2022.
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