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A modified smith predictor with an approximate inverse of dead time
Author(s) -
Huang HsiaoPing,
Chen ChengLiang,
Chao YungCheng,
Chen PeiLin
Publication year - 1990
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690360708
Subject(s) - smith predictor , control theory (sociology) , dead time , inverse , filter (signal processing) , mathematics , dead zone , disturbance (geology) , element (criminal law) , control (management) , computer science , engineering , pid controller , control engineering , statistics , temperature control , law , paleontology , geometry , artificial intelligence , political science , computer vision , biology , oceanography , geology
A compensator that approximates the inverse of dead time at low frequencies in a modified Smith predictor (MSP) control system is proposed, and the design of an MSP control system for it is given. The performance of the MSP with compensator, using a first‐order element as a low‐pass filter, is described. Analysis and simulation results show that the compensator improves performance in the disturbance rejection of the original Smith predictor.