Abstract :
Control engineers often design feedback control systems for inherently unstable systems, to keep them operating safely. In such cases, there are fundamental limitations on the achievable sensitivity function. The article discusses the potentially serious consequences of sensitivity constraints, input saturation, and instability. Inadequacies of control systems in such cases have led to deaths.
Keywords :
computerised control; control system synthesis; feedback; safety; stability; control engineers; feedback control systems; inherently unstable systems; input saturation; instability; safety; sensitivity constraints; sensitivity function limitations; Actuators; Automatic control; Control systems; Design engineering; Human factors; Industrial control; Production facilities; Road transportation; Signal processing; Societies;
