뉴럴네트워크 모델 기반의 IPMC 셀프 센싱 액추에이터

Journal of the Korea Academia-Industrial cooperation Society, 2011

The core of IT products, electronic components, especially the MLCC, chip inductors, chip Varistors and so on. In order to test the electrical characteristics of the chip using the Reno-pin contact test method has been used. In current chips, mass production of semiconductor manufacturing processes, high-speed production test for the chip speed up, precision is required. But Vibration displacement is a very short, so in order to overcome these shortcomings, the displacement amplification to design the structure has been actively studied. In this paper, a building structure with a flexible hinge was designed amplification instrument, semiconductor chip industry in the performance test and inspection equipment to measure the electrical characteristics of high speed linear actuators Reno-Pin using system was developed.

Korean Journal of Construction Engineering and Management, 2013

Owners' efforts to acquire Green building certification, which started in 2002, have been rapidly increasing since 2006. The causes of the increased owners' interests are due to various incentives, legal obligation, and purpose of advertising. As project owners generally are deficient in capabilities and knowledge on how to deal with administrative works on certification, they tend to fulfill the minimum requirements for certification. However, effective administration process need capabilities of identifying individual making decision point and review information. The implementation of green building certification system is expected to provide comfort to both occupants and potential users. Furthermore it contributes to reducing energy costs throughout the phase of O&M. In addition, technology innovation in green industry can be obtained. Therefore, this study is intended to support owners in order that they can clarify certification tasks and make a rational decision-making in time. For this purpose, first of all, the major decision points were selected as the gateways of green building certification process. And then management system based on IDEF3 modeling was developed for supporting owners'decision-making performance. This management system will improve owners'overall capacity in handling all the tasks regarding the certification of Green building.

Journal of Korean Society of Environmental Engineers, 2011

A package type of SCR (selective catalytic reduction) system that was proposed for removing the NOx found in flue gas from the small scale of air pollution sources was evaluated. The efficiency of the SCR system is determined by the proper utilization of catalytic media installed inside of the system, and the proper distribution of flow velocity and NH3 concentration in the flue gas is a crucial factor for using the catalytic media. In this study, the distributions of NH3 concentration were estimated under the various arrays and shapes of AIG at the given gas flow condition. The value of RMS (%) in NH3 concentration is 95.3% at co-current flow (at 0°) injection but it is 90.1% at the condition of counter-current flow (at 120°) condition, which implies the counter-current injection is more favorable. By rearranging the NH3 injection flow rates based on the distribution of velocity and NH3 distribution in basic calculation, the value of RMS (%) in NH3 concentration was reduced to 62.8%. The enhanced effect of NH3 mixing by the combined effect of arrays and shapes are complied in the study.

Journal of the Korean Society of Marine Engineering, 2007

Jurnal INSTEK (Informatika Sains dan Teknologi), 2020

Proses maserasi secara konvensonal menggunakan alat sederhana memiliki kekurangan dalam kejenuhan pelarut sehingga penarikan senyawa tidak maksimal. Macerator-Magnetic Stirrer berbasis Arduino Uno dengan pengadukan otomatis dikembagkan untuk optimalisasi proses ekstraksi secara maserasi. Penelitian ini merupakan penelitian kuantitatif dengan pendekatan R&D. Pengujian dilakukan terhadap tegangan komponen alat, uji presisi dan akurasi alat. Berdasarkan hasil dari pengujian, Macerator-Magnetic Stirrer memiliki tegangan yang sesuai dan laik digunakan. Hasil uji laju pengadukan pada 100, 200 dan 300 rpm memiliki nilai presesisi alat yang baik dan akurasi alat pada 200 dan 300 rpm. Akurasi alat pada 100 rpm belum memenuhi standar. Waktu pengadukan pada 600, 1.200 dan 1.800 s memiliki nilai presisi (% RSD) yang baik dan akurasi alat yang memenuhi standar % error. Kata kunci : Macerator-Magnetic Stirrer, Ekstraksi, Maserasi, Arduino Uno

Journal of manufacturing engineering & technology, 2013

In this paper, in order to overcome shortcomings of manual inspection for the automotive PWM Shaft, we developed an automated inline inspection system. The automated inline inspection system consists of the work feeder unit, conveying unit, outer diameter check unit, run-out and roundness check unit, machine vision, defective separation unit and status alarm unit. We used the machine vision system for automatic inspection process and designed the inline systems for automatic feeding and selecting process. Also the repeated operation test was performed in order to verify the precision and reliability of the proposed automated inline inspection system.

The KIPS Transactions:PartD, 2008

In spite of the various techniques on the testing of embedded software, operation failures of embedded systems such as robot or satellite applications, are occurred frequently. The critical reason of these failures is due to the fact that software is embedded into a target system with inherent faults. Therefore, in order to prevent the failure owing to such faults, it needs a technique to test the embedded software which operates in real environment. In this paper, we propose a testing technique, aspect-based On-the-Fly testing that is to test the functionality and performance at real operation time. Our proposed technique gives some benefits of real test of unexpected input conditions, prevention of software malfunction, and reusability of aspect components for the testing.

The Transactions of The Korean Institute of Electrical Engineers, 2012

In this paper, a conceptual design and a detailed design of novel cylindrical magnetic levitation stage is introduced. This is came from planar-typed magnetic levitation stage. The proposed stage is composed of cylinder-typed permanent magnet array and semi-cylinder-typed 3 phase winding module. When a proper current is induced at winding module, a magnetic levitation force between the permanent magnet array and winding module is generated. The proposed stage can precisely move the cylinder to rotations and translations as well as levitations with the magnetic levitation force. This advantage is useful to make a nano patterning on the surface of cylindrical specimen by using electron beam lithography under vacuum. Two methods are used to calculate required magnetic levitation forces. The one is 2D FEM analysis, the other is mathematical modeling. This paper shown that results of two methods are similar. An assistant plate is introduced to reduce required currents of winding module for levitations in vacuum. The mathematical model of cylindrical magnetic levitation stage is used for dynamic simulation of magnetic levitations. A lead-lag compensator is used for control of the model. Simulation results shown that the detail designed model of the cylindrical magnetic levitation stage with the assistant plate can be controlled very well.

The Journal of Society for e-Business Studies, 2011

The Transactions of The Korean Institute of Electrical Engineers

For OBC (On-Board Charger) and LDC (Low DC-DC Converter) used as essential power conversion systems of PHEV (Plug-in Hybrid Electric Vehicle), system performance is required as well as reliability, which is need to protect the vehicle and driver from various faults. While current development processor is sufficient for embodying functions and verifying performance in normal state during development of prototypes for OBC and LDC, there is no clear method of verification for various fault situations that occur in abnormal state and for securing stability of vehicle base, unless verification is performed by mounting on an actual vehicle. In this paper, a CCM (Charger Converter Module) was developed as an integrated structure of OBC and LDC. In addition, diverse fault situations that can occur in vehicles are simulated by a simulator to artificially inject into power conversion system and to test whether it operates properly. Also, HILS (Hardware-in-the-Loop Simulation) is carried out to verify whether LDC is operated properly under power environment of an actual vehicle.