摘要
针对碳纤维角联织机经纱张力控制问题,考虑开口等不确定因素对经纱张力的影响,建立了离散非线性送经系统张力控制模型,提出了策略迭代自适应动态规划(ADP),并对ADP中评价网络设计了自适应权值更新率;证明了策略迭代ADP在离散系统的收敛性,削减了非线性及不确定因素对经纱张力的影响,实现了对经纱张力的稳定控制,提高了系统鲁棒性。仿真结果表明:相比传统ADP,策略迭代ADP可以使经纱张力在2 s内快速无波动的到达稳定状态,使系统性能指标函数收敛更优。
Aiming at the problem of warp tension control of carbon fiber multilayer diagonal loom,considering the influence of uncertain factors such as opening on warp tension,a discrete nonlinear let-off system tension control model is established,a policy iteration adaptive dynamic programming(ADP)is proposed,and the adaptive weight update rate of the evaluation network is designed.The convergence of policy iteration ADP in the discrete system is proved,the influence of nonlinear and uncertain factors on warp tension is reduced,the stable control of warp tension is realized,and the robustness of the system is improved.The simulation results show that compared with the traditional ADP,the policy iteration ADP can make the warp tension reach the stable state quickly and without fluctuation within 2 s,and make the convergence of the system performance index function better.
作者
刘薇
张黎
李想
LIU Wei;ZHANG Li;LI Xiang(School of Mechanical Engineering,Tiangong University,Tianjin 300387,China;Tianjin Key Laboratory ofAdva-nced Mechatronics Equipment Technology,Tiangong University,Tianjin 300387,China)
出处
《天津工业大学学报》
CAS
北大核心
2023年第1期72-80,共9页
Journal of Tiangong University
基金
天津市自然科学基金资助项目(18JCYBJC88300)。
关键词
碳纤维角联织机
送经系统
策略迭代ADP
自适应权值更新率
carbon fiber multilayer diagonal Loom
let-off system
policy iterative adaptive dynamic programming(ADP)
adaptive weight update rate
