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Quasi-min-max Output-feedback Model Predictive Control for LPV Systems with Input Saturation
김태형,이호운 제어·로봇·시스템학회 2017 International Journal of Control, Automation, and Vol.15 No.3
In the research field of model predictive control (MPC), an output-feedback-type MPC method is consistentlyrequired for controlling a wide range of constrained systems. In this paper, we propose a two-stage controlstrategy for polytopic linear parameter varying (LPV) systems subject to input constraints. This strategy consistsof a modified quasi-min-max output-feedback MPC method and a novel terminal output-feedback robust controltechnique. The proposed control mechanism involves the system states to be first controlled via the MPC methodto be driven into a prescribed neighborhood of the origin, and then, the terminal output-feedback robust controlmethod guaranteeing the input constraints is applied to make such states converge to the origin. It is also verifiedthat our control method guarantees the closed-loop stability and feasibility in the presence of model uncertaintiesand input constraints. Finally, a numerical example is given to demonstrate its effectiveness.
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김태형,김희진 대한의료관련감염관리학회 2013 의료관련감염관리 Vol.18 No.2
Infectious disease consultation contributes to optimal antibiotic use as well as improved treatment outcomes in many infectious diseases, especially severe infections like bacteremia. However, communication and language matter in consultations between clinicians. Communication barriers are even more complex among professionals who speak Korean, since there are significant challenges for practicing medicine while relying on language translations. This review aims to address some of the components that should be included in infectious diseases consultations for Korean-speaking specialists.
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김태형,권기현,박경채 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.5
In this study, the heating unit of direct-heating method was manufactured as being the thermal spray coating of conductive heating material on the surface of heating unit in order to improve the demerits of indirect-heating method. And Cu-Zu ferrite had the properties of thermal conduction and high electrical resistivity was chosen of the conductive heating material. Cu-Zu ferrite composite powders were fabricated by drum type ball milling. The atmospheric plasma spray(APS) process was used to deposit the coatings of Ni-5.5Al-5Mo powders for the bonding layer, Al_2O_3 powders for the electrical insulating layer and Cu-Zn ferrite composite powders for the electrical heating layer onto the Al substrate. The plasma sprayed coatings were performed the heat-treatment at 300℃, 405℃ and 600℃. In order to evaluate the plasma sprayed coatings performance, the coating powder observated microstructure, XRD analysis and EDX mapping analysis and mechanical and electrical properties of plasma sprayed coatings. In the result of observations of microstructures, mechanical properties and electrical properties, the best sprayed coatings with direct heating unit was concluded the sprayed coatings that was heat-treated at 300℃.
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