A reconfigurable control system based on biological immune mechanism

Most of the multivariable industrial production processes have latent failures on account of its complexity and uncertainty. This brings a great hidden threat to the control system´s safety. Actuator fault is one of the commonest failures in control systems. This paper addresses a reconfigurable control system whose controller can be reconstructed when any actuator is faulty. Regard the control system as a biological immune system, an immune reconfigurable control system (IRCS) is designed. The IRCS includes an actuator monitor to imitate the immune surveillance mechanism, a decision module to imitate the immune response mechanism, a control strategy repository to imitate the immune memory mechanism and an adaptive learning module to imitate the immune learning mechanism. The IRCS is applied to the polyacrylonitrile carbon fiber coagulation bath, and the simulation results show that when there is any actuator fault, the IRCS can guarantee better performance compared with the conventional control schemes.