Anti-windup for local stability of unstable plants
Proceedings of the American Control Conference - Tập 1 - Trang 645-650 vol.1
Tóm tắt
We consider the problem of anti-windup compensation based on coprime factorizations, for unstable plants with an input saturation nonlinearity. Firstly, we show that the behaviour of the compensated system is related to the behaviour of a simple linear system in feedback with a deadzone nonlinearity. We then state a local stability result which applies to such systems, and state under what conditions this result is non-trivial. For the anti-windup problem, we propose a low-order anti-windup compensator which is guaranteed to satisfy these conditions whenever possible, and hence provides some non-trivial level of local stability. This is illustrated by an example.
Từ khóa
#Stability analysis #Linear systems #Feedback #Stability criteria #Control systems #Error correction #Transfer functions #ActuatorsTài liệu tham khảo
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