Types of constraints that have been dealt with to a much lesser extent but that also have an effect on the achievable performance. There also exist structural or dynamic constraints that together with performance specifications, environmental regulations or safety rules usually require system states or outputs to be bounded. Although constrained control problems have been studied primarily in SISO systems, the majority of the real-world processes have more than one variable to be controlled and possess more than one control action for this objective. These systems are called multivariable systems or multiple-input multiple-output (MIMO) systems.

Inspec keywords: environmental factors; MIMO systems

Other keywords: structural constraint; multivariable system; safety rule; real-world process; environmental regulation; SISO system; constrained control; multiple-input multiple-output system; dynamic constraint

Subjects: Multivariable control systems