期刊
INTERNATIONAL JOURNAL OF CONTROL
卷 86, 期 12, 页码 2228-2252出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/00207179.2013.810345
关键词
Model-free control; PID controllers; intelligent PID controllers; intelligent PI controllers; intelligent P controllers; estimation; noise; flatness-based control; delay systems; non-minimum phase systems; fault accommodation; heat partial differential equations; operational calculus; functional analysis; differential algebra
'Model-free control' and the corresponding 'intelligent' PID controllers (iPIDs), which already had many successful concrete applications, are presented here for the first time in an unified manner, where the new advances are taken into account. The basics of model-free control is now employing some old functional analysis and some elementary differential algebra. The estimation techniques become quite straightforward via a recent online parameter identification approach. The importance of iPIs and especially of iPs is deduced from the presence of friction. The strange industrial ubiquity of classic PIDs and the great difficulty for tuning them in complex situations is deduced, via an elementary sampling, from their connections with iPIDs. Several numerical simulations are presented which include some infinite-dimensional systems. They demonstrate not only the power of our intelligent controllers but also the great simplicity for tuning them.
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