Is it possible to design a controller directly for MIMO processes?

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Osvaldo E. Agamennoni

Yes, in many case it is preferable to design a multivariable controller rather than aconverting into sigle loops

Mohammed Jama

Yes, sure ....... if you formulate your model in a state-space representation, you can then simply use any linear control approach to control the plant, i.e., state feedback control, optimal control, model predictive control.

Ruiyao Gao

If your models are decoupled, it would be easier to design each controller independently. otherwise, it might be preferable to use state space model as Mohamed suggested. As for what approach to pick, it is highly related to the system.