Roll-to-roll web machine;
Decentralized coordinated optimal guaranteed cost control (DCOGCC);
Interval matrix;
Coordination variable;
Linear matrix inequality(LMI);
NONLINEAR-SYSTEMS;
TRACKING CONTROL;
DESIGN;
D O I:
10.1016/j.isatra.2020.11.024
中图分类号:
TP [自动化技术、计算机技术];
学科分类号:
0812 ;
摘要:
This article investigates a coordinated optimal guaranteed cost control (DCOGCC) for a multi-motor roll-to-roll web machine with time-varying and uncertain parameters. The state-space oriented DCOGCC law is designed to ensure that each subsystem of the web machine is stable and the upper bound of performance index is minimum. Linear matrix inequality (LMI) conditions to guarantee the stability of the systems with DCOGCC are derived. A decentralized model is adopted by regarding the entire machine as a synthetic system, then the original decentralized model is transformed into an equivalent one. By choosing appropriate information of consecutive subsystems as coordination variables, the DCOGCC scheme may attenuate the interaction effects between subsystems. The results of some simulations and experiments are given to verify the feasibility and effectiveness of the DCOGCC. (C) 2020 ISA. Published by Elsevier Ltd. All rights reserved.