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On The Modeling of Twin Rotor MIMO System Using Chirp Inputs as Test Signals
Author(s) -
Paul Parthish Kumar,
Jacob Jeevamma
Publication year - 2017
Publication title -
asian journal of control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.769
H-Index - 53
eISSN - 1934-6093
pISSN - 1561-8625
DOI - 10.1002/asjc.1502
Subject(s) - control theory (sociology) , mimo , rotor (electric) , nonlinear system , chirp , representation (politics) , helicopter rotor , engineering , system dynamics , control engineering , experimental data , computer science , mathematics , electronic engineering , physics , control (management) , artificial intelligence , mechanical engineering , beamforming , laser , statistics , optics , quantum mechanics , politics , law , political science
This paper addresses the modeling problem for the twin rotor multi input multi output system. To develop experimental data, this popular commercial laboratory model of a helicopter from Feedback Instruments Ltd is excited with band limited chirp inputs. The conclusions drawn in this paper lead to four significant achievements: 1) derivation of a linear nominal model for Twin Rotor MIMO System, TRMS in short, from its equivalent nonlinear mathematical representation; 2) dynamic modeling of TRMS; 3) determination of non‐minimum phase dynamics; and 4) determination of linear operating region. The work considers systematic study of the system dynamics of TRMS and analytical treatment of its identified data leading to derivation of the RHP zero dynamics followed by pictorial illustrations indicating resonant modes associated with the plant. The method used in the present paper can be essentially used in modeling of 2 × 2 plants exhibiting non‐minimum phase dynamics and model uncertainties.