Robust asynchronous switching predictive fault-tolerant control for multi-phase batch processes
SHI Hui-yuan
JIANG Pu
LI Hui
SU Cheng-li
LI Ping
Abstract：In this paper,a robust asynchronous switching predictive fault-tolerant control approach is proposed to solve the asynchronous switching and partial actuator failures of multi-phase batch processes.Firstly,an asynchronous switching fault model,including the stable and unstable cases,is established.Then,an output tracking error is introduced to obtain a novel extended asynchronous switching fault model with multi degrees of freedom.On this basis,a robust asynchronous switching fault-tolerant controller is designed.Meanwhile,sufficient conditions are given to ensure that the closed-loop fault system is asymptotically stable in each phase and exponentially stable in each batch.By solving these conditions online,the running time of the stable and unstable cases and the real-time gains of the control law in each phase are obtained.By providing the switching signal to the controller in advance through the time of the unstable case,the asynchronous switching situation can be avoided.Finally,a simulation of injection molding process is given to verify the effectiveness and feasibility of the proposed approach.
Keywords：partial actuator failureasynchronous switchingmulti-phase batch processmodel-dependent average dwell timerobust predictive fault-tolerant control
Publication Date：2025-10-30
Online Publishing Date：2025-11-13(First online date of this platform, not the publication date of the document)
Pages：10( 2046-2055 )