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Identification of Longitudinal Aircraft Dynamics by Process Model using MATLAB/SIMULINK

System-identification methods compose a mathematical model, or series of models, from measurements of inputs and outputs of dynamic systems. The estimated models allow the characterization of the response of the overall aircraft or component subsystem behavior. This paper discusses the use of System Identification Toolbox of MATLAB/SIMULINK for the estimation of aircraft flight dynamics in longitudinal channel. The data extraction, model selection and estimation of aircraft dynamics by process modeling along with data validation, time and frequency response analysis is illustrated using the system-identification simulation environment. Keywords—System Identification, Process model, MATLAB/SIMULINK.