A control frequency selection procedure for frequency domain autotuning methods on PID controllers
Tóm tắt
Classical PID controller tuning methods in the frequency domain have as their fundamental target the achievement of a certain phase margin or gain margin at a control frequency (w/sub c/). In both cases the task of w/sub c/ selection is key due to the fact that the control system stability and bandwidth are fully dependent on it.. The classical methodology can produce unstable systems if w/sub c/ is not adequately selected. When a precise process model is available, it is possible to select w/sub c/ to provide a controller that better satisfies the design specifications, but this task is not easy to implement when the process dynamics are unknown. A recursive procedure for the selection of w/sub c/ that guarantees system stability and the design specifications without the availability of a process model is presented in this work.
Từ khóa
#Frequency domain analysis #Three-term control #Control systems #Control system synthesis #Tuning #Regulators #Equations #Frequency synthesizers #Design engineering #StabilityTài liệu tham khảo
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