Control System Design by Multicriteria Selection in Microwave Sintering Processes

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• 作者：Sergio Garcí ; a-Nieto ^{sergarro@isa.upv.es" class="auth_mail" title="E-mail the corresponding author} ; Gilberto Reynoso-Meza ^{gilreyme@upv.es" class="auth_mail" title="E-mail the corresponding author} ; Amparo Borrell ^{aborrell@upvnet.upv.es" class="auth_mail" title="E-mail the corresponding author} ; Felipe Peñ ; aranda-Foix ^{fpenaran@dcom.upv.es" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Microwave ovens ; Adaptive control ; Nanomaterials ; Ceramics ; Microstructure ; Multicriteria Design ; PID
• 刊名：IFAC-PapersOnLine
• 出版年：2014
• 出版时间：2014
• 年：2014
• 卷：47
• 期：3
• 页码：8528-8533
• 全文大小：851 K

文摘

Microwave sintering has emerged in recent years as a non-conventional method for sintering materials with significant advantages against conventional procedures. By microwave sintering are achieved higher density (~99%), hardness (18 GPa) and fracture toughness (6.3 M Pam1/2) properties and homogeneous micro-structure compared to conventional heating. Reason why, the design of microwave systems, including adaptive control schemes, becomes a very important topic to be performed. The present work describes the microwave cavity control system design for sintering alumina-zirconia nanocomposite. The samples were sintered in a multimode microwave furnace (2.45 GHz) at different temperatures (1200-1400 °C) in air. The main challenge from the control point of view is to guarantee an small tracking error, when a temperature profile is required, due to the nonlinear dynamical behaviour of nanocompistes.