Research on the MR-ILQ design method to looper control system in hot strip rolling mills

Looper control system based on inverse linear quadratic (ILQ) method, since the variable parameters are limited, it can not guarantee the decoupling control affection, meanwhile, because of changing of device model, it also can weak control affection. In connection with the problem above, combining model reference with ILQ control, the controller of looper control system by model-reference inverse linear quadratic (MR-ILQ) Method is designed. If the suitable referenced model and deviation compensator was fond, it can get ideal output in the MR-ILQ control system. finally,though control system simulation, it can get a conclusion that in contrast with ILQ control system, MR-ILQ control system has a good ability of decoupling and corresponding rate, even when the device model parameters changed, MR-ILQ control system reminds perfect control affection as before.