For purpose of solving the control problem of Li-ion electrode areal density in complex industrial environments with variant parameters,large disturbances and large time-delay,the areal density control system based on predictive PI was designed.Firstly,having a mathematical model established based on the working principle of electrode coating and its control scheme designed;then,having the traditional particle swarm optimization algorithm based to introduce into the cross mutation factor so as to achieve parameter tuning of the predictive PI algorithm.The application result shows that,the control system proposed can achieve closed-loop control of areal densities in the transverse direction(TD)and the machine direction(MD).The coefficient of variation(CV)of the areal density can decrease from 0.192％to 0.115％,and the process capability index(CPK)of the areal density increase from 1.212 to 2.324.The consistency and sta-bility of the areal density of lithium-ion batteries have been greatly improved.
关键词
预测PI/遗传粒子群算法/锂离子电池/面密度/不确定系统
Key words
predictive PI/genetic particle swarm optimization/Li-ion battery/areal-density/uncertain system
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