Auto-tuning of Fractional Lead-lag Compensators
نویسندگان
چکیده
In this paper, a method for auto-tuning of a fractional order leadlag compensator using relay feedback tests is proposed. A design method for this kind of compensators is discussed, based on the magnitude and phase measurement of the plant to be controlled from relay feedback tests at a frequency of interest. Simple relationships among the parameters of this fractional controller are established and speci cations such as the static error constant (kss), phase margin ('m) and gain crossover frequency (!c) can be ful lled, with a robustness argument by inspecting the atness of phase Bode plot of the compensator. The auto-tuning method proposed can be taken as a rst step for a latter generalization of these lead-lag compensators to the fractional PI D controllers. Copyright c 2005 IFAC
منابع مشابه
Tuning of Lead Compensators with Gain and Phase Margin Specifications
For a servo plant with an integrator, analytical tuning formulas for phase lead compensators with both gain and phase margin specifications are derived in this paper. Comparing with other tuning methods, this method is simple with a short tuning time. Simulation results under two typical cases show that this method is general, too. Copyright c ©2005 IFAC
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