Investigation of ARX model on partial input-output data in heating process

This paper presents an investigation of ARX model on partial input-output data from heating process in a steam distillation essential oil extraction (SDEOE) system. The study was performed by applying system identification and it was carried out by using four general stages; experimental work to collect input-output data, model structure selection where ARX model is chosen, estimation to obtain the ARX model, and validation. The result from this investigation showed that the ARX model obtained by the partial input output data is sufficient and adequate, i.e. the model behaviour of heating process is closed to the real system performance.