Zulkeflee, Asyura Binti
(2009)
Nonlinear Autoregressive With Exogenous Input Model Based Control Strategy For Batch Esterification Reactor.
Masters thesis, Universiti Sains Malaysia.
Abstract
Reaktor pengesteran kelompok kerap digunakan di dalam industri pemakanan dan farmasi. Kebiasaannya, pengesteran kelompok adalah proses yang kompleks kerana ia melibatkan kelakuan dinamik yang tak lelurus. Ini adalah disebabkan faktor pencirian kinetik dan proses yang tidak stabil. Oleh kerana itu, pemodelan dan kawalan reaktor pengesteran menjadi sukar dan penggunaan strategi kawalan termaju boleh menghasilkan prestasi kawalan yang lebih baik. Di antara semua strategi kawalan termaju, teknik kawalan berdasarkan model lebih banyak mendapat perhatian sepanjang dekad yang lalu. Sehubungan dengan itu, dalam kajian ini, kawalan berdasarkan model auto mundur tak lelurus dengan masukan luar (NARX-MBC) telah dibina bagi mengawal suhu reaktor pengesteran kelompok. Pembangunan strategi kawalan NARX-MBC dibahagikan kepada tiga bahagian penting iaitu proses, model dalaman dan pengawal.
Batch esterification reactors are frequently used in the food and pharmaceutical industries. In general, batch esterification is a complex process since the system involves a nonlinear dynamic behavior due to its kinetic characteristics and unsteady state process. Due to these reasons, the modeling and control of the batch esterification reactor is difficult and the application of advanced control strategies often lead to a better control performance. Among all the advanced control strategies, model-based control techniques have been largely extended and have gained prominence during the past decades. In this work, a Nonlinear AutoRegressive with eXogenous inputs-Model Based Control (NARX-MBC) strategy was developed to control the reactor temperature of the batch esterification reactor. The development of the NARX-MBC strategy is divided into three important sections i.e. process, internal model, and controller.
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