• Title/Summary/Keyword: Product Performance Program

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Development of a Design Support Program for Pivot Points of Working Devices in Construction Equipment using Planar Multi-body Dynamic Analysis (평면 다물체 동역학 해석을 이용한 건설장비 작업장치의 링크 피봇점 설계 지원 프로그램 개발)

  • Park, Hyun-Gyu;Jang, Jin-Seok;Yoo, Wan-Suk;Kim, Min-Seok;Lee, Hee-Jong;Lee, Jae-Wook
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.14 no.6
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    • pp.49-56
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    • 2015
  • For designing working devices of construction equipment, it is necessary to consider not only sufficient working ability but also available working range. Therefore, it is important to select the appropriate pivot positions of links. This paper presents a study on selection of pivot points of links used in construction equipment. To analyze the effect of each pivot point, a design program for pivot selection is developed. A conventional pivot design method requires a complicated process because it needs to create a certain working position manually to evaluate its performance. However, the developed program includes an automatic link assembly algorithm; thus, the working device can easily be analyzed by using pivot information of links. The developed program also included a kinematic/static analysis module and characteristic analysis algorithms. Therefore, it is possible to easily analyze a working device model created through the automatic assembly algorithm, whereby users can easily analyze the effect of each link pivot point for the actual product design.

Determinants and Effects of FTA-PASS and ERP System Compatibility (원산지관리시스템(FTA-PASS)과 전사자원관리시스템(ERP)의 연동 수준이 수출 성과에 미치는 영향 분석)

  • Su-Han Hwang;Hyuk-Soo Cho
    • Korea Trade Review
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    • v.45 no.2
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    • pp.1-16
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    • 2020
  • Korea is one of active countries in terms of FTA(Free Trade Agreement) around the globe. Local market is not big enough for Korean companies. This is why Korea is actively participating in FTA with various countries. Individual companies should conform to regulation, policy and system relevant to the agreement. Otherwise, it is not easy for companies to enjoy benefits of FTA. The Korean government is using various FTA programs to support domestic companies, in particular SMEs(Small and Medium-Sized Enterprises). FTA-PASS is a representative program. FTA-PASS is an official program of Korea Customs Service. Korean companies can use the program as free. However, some companies may have difficulties regarding the use of FTA-PASS. The program may cause of compatibility problem related their own ERP(Enterprise Resource Planning) systems. This study is designed to analyze determinants of FTA-PASS and ERP system compatibility. Furthermore this study aims to examine effects of the system compatibility on export performances. This study collected data from Koreas SMEs. In specific, the primary data was based on surveys distributed to 303 SMEs. Based on empirical findings, we could get important determinants to improve compatibility between FTA-PASS and ERP systems. For instance, the government support, product standardization, HS Code clearness and market stability could be considered important determinants. Also, according to empirical findings, a positive relationship between system compatibility an export performance was supported. Analyzing comprehensive determinants of system compatibility can be suggested as an important topic for future research.

Study on the Effect of Product Line Pricing on Loading Efficiency and Logistics Cost (상품라인별 가격결정이 적재효율 및 물류비에 미치는 영향에 관한 연구)

  • Jung, Sung-Tae;Yoon, Nam-Soo;Han, Kyu-Chul
    • Journal of Distribution Science
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    • v.12 no.8
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    • pp.55-69
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    • 2014
  • Purpose - Despite the importance of price, many companies do not implement pricing policies smoothly, because typical price management strategies insufficiently consider logistics efficiency and an increase in logistics costs due to logistics waste. This study attempts to examine the effect of product line pricing, which corresponds to product mix pricing, on logistics efficiency in the case of manufacturer A, and analyzes how logistics performance changes in response to these variables. Research design, data, and methodology - This study, based on the case of manufacturer A, involved research through understanding the current status, analyses, and then proposing improvement measures. Among all the products of manufacturer A, product group B was selected as the research object, and its distribution channel and line pricing were examined. As a result of simulation, for products with low loading efficiency, improvement measures such as changing the number of bags in the box were suggested, and a quantitative analysis was conducted on how these measures influence logistics costs. The TOPS program was used for the Pallet loading efficiency simulation tool in this study. To prevent products from protruding out of the pallet, the maximum measurement was set as 0.0mm, and loading efficiency was based on the pallet area, and not volume. In other words, its size (length x width) was focused upon, following the purpose of this study and, then, the results were obtained. Results - As a result of the loading efficiency simulation, when the number of bags in the box was changed for 36 products with low average loading efficiency of 73.7%, as shown in

    , loading efficiency improved to 89.9%. Further, from calculating logistics cost based on the cost calculation standard of manufacturer A, the amount of annual logistics cost reduction amounted to 101,458,084 KRW. Given that the sum of the logistics cost of the product group B of manufacturing enterprises A is 400,340,850 KRW, it can be reduced by 25%, to 298,882,766 KRW. Although many methods improve loading efficiency, this study proved that logistics cost could be reduced by changing the number of bags within boxes. If this measure is applied to other items, visible logistics cost reduction effects will be realized through improvements in loading efficiency. Conclusions - Future pricing policies should consider their correlation with quality, loading efficiency, product specifications, and logistics standardization to prevent logistics waste, enabling management to improve earnings for companies. Thus, when companies decide pricing policies for new products, the aspects of merchandising and marketing should take priority; however, the aspect of logistics also needs to be considered as significant. Measures revealed by the study results are not only the responsibilities of manufacturing enterprises. Pricing policy agreements between manufacturing enterprises and distribution companies, and logistics factors related to price determination should be considered; further, governments should also support them for their collaborations. This will enable consumers to purchase quality products with low prices.

  • Optimization of Process Parameters Using a Genetic Algorithm for Process Automation in Aluminum Laser Welding with Filler Wire (용가 와이어를 적용한 알루미늄 레이저 용접에서 공정 자동화를 위한 유전 알고리즘을 이용한 공정변수 최적화)

    • Park, Young-Whan
      • Journal of Welding and Joining
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      • v.24 no.5
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      • pp.67-73
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      • 2006
    • Laser welding is suitable for welding to the aluminum alloy sheet. In order to apply the aluminum laser welding to production line, parameters should be optimized. In this study, the optimal welding condition was searched through the genetic algorithm in laser welding of AA5182 sheet with AA5356 filler wire. Second-order polynomial regression model to estimate the tensile strength model was developed using the laser power, welding speed and wire feed rate. Fitness function for showing the performance index was defined using the tensile strength, wire feed rate and welding speed which represent the weldability, product cost and productivity, respectively. The genetic algorithm searched the optimal welding condition that the wire feed rate was 2.7 m/min, the laser power was 4 kW and the welding speed was 7.95 m/min. At this welding condition, fitness function value was 137.1 and the estimated tensile strength was 282.2 $N/mm^2$.

    Practical Methodology of the Integrated Design and Power Control Unit for SHEV with Multiple Power Sources

    • Lee, Seongjun;Kim, Jonghoon
      • Journal of Electrical Engineering and Technology
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      • v.11 no.2
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      • pp.353-360
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      • 2016
    • Series hybrid electric vehicles (SHEVs) having multiple power sources such as an engine- generator (EnGen), a battery, and an ultra-capacitor require a power control unit with high power density and reliable control operation. However, manufacturing using separate individual power converters has the disadvantage of low power density and requires a large number of power and signal cable wires. It is also difficult to implement the optimal power distribution and fault management algorithm because of the communication delay between the units. In order to address these concerns, this approach presents a design methodology and a power control algorithm of an integrated power converter for the SHEVs powered by multiple power sources. In this work, the design methodology of the integrated power control unit (IPCU) is firstly elaborately described, and then efficient and reliable power distribution algorithms are proposed. The design works are verified with product-level and vehicle-level performance experiments on a 10-ton SHEV.

    Design and Implementation of Embedded LINUX-Based System for Iris Recognition System (홍채인식 시스템을 위한 임베디드 시스템의 설계 및 구현)

    • 임철수;박병섭
      • The Journal of the Korea Contents Association
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      • v.3 no.3
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      • pp.47-54
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      • 2003
    • In this paper, we implemented embedded LNUX-based UI(User Interface) board which can be applied to Human Iris recognition product. for this purpose, we also analyzed and designed LNUX operating system and adapted boot loader, kernel, control program modules according to the developed H/W architectures. As the experimental results shows that Iris recognition system is operable and embedded LNUX-based UI board which is connected to heterogeneous system by TCP/IP protocol can both successfully send and receive data this UI board has been able to obtain high performance.

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    The Voltage Drop Compensation of Electric Railway Feeding system using a Fuelcell System (연료전지 시스템을 이용한 전기철도 급전계통 전압강하 보상)

    • Kim, Jae-Moon
      • The Transactions of The Korean Institute of Electrical Engineers
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      • v.64 no.2
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      • pp.342-348
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      • 2015
    • In this paper, fuel cell power generation system that is being studied in recent railway field was applied to compensate for the voltage drop due to the load as driving electric vehicle. PSIM simulation program is to be used to implement the modeling of the electric railway for AC AT feeder system. For it, It was applied to the product-type single-phase PLL algorithm, step-down converter is controlled as power so as to have the fuelcell generation system. Based on it's result, a reactive power due to the catenary impedance in accordance with the current flowing is compensated as linked with fuelcell generation system which supplied the current to the power supply grid. and then its performance was confirmed that voltage compensation effect obtained at SubStation (SS), SubSectioning Post (SSP), Sectioning Post (SP).

    A Study on Servo Motor Control in Multi Pallet System (다중 팔렛 시스템에 사용되는 서보 모터의 제어에 관한 연구)

    • Oh, Hyun-Woo
      • IEMEK Journal of Embedded Systems and Applications
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      • v.14 no.6
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      • pp.339-346
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      • 2019
    • Multi-axis servo systems are widely used in various fields such as industiral systems for improving production efficiency, robotics and complex systems where many mechanical devices and sensor systems are connected. Such a servo system requires that the servo control technique to realize the synchronization of the drive shaft in the steady state and transient conditions and to control so as to follow the target track in order to improve product precision and production efficiency. In addition, embedded type hardware is required for smooth control of the entire multi-axis system. Therefore, this paper uses hardware based on FPGA which is widely used in digital signal processing field and various control system because hardware design change is easy and parallel processing is possible. In addition, Labview based servo motor control program was studied that can control the servo motor by ensuring the performance and flexibility of the FPGA and follow the target trajectory according to various speed processing and accurate timing synchronization.

    A Study on an Efficient Method to Evaluate Intermodulation Product (혼변조적의 효과적인 산출 방식에 관한 연구)

    • 고성찬;황인환;최형진
      • Journal of the Korean Institute of Telematics and Electronics A
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      • v.30A no.9
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      • pp.14-23
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      • 1993
    • In this paper, we present analysis results of various intermodulation products (IMPs) evaluation methods previously proposed for nonlinear systems. The results indicate that out of these methods, Fuenzalida and Simbo's method is the best for efficient evaluation of IMPs. Also, we present a detailed mathematical analysis of IMP and show how to apply the equations related to IMP to actual program implementations with examples. In this paper, we newly introduce three methods to reduce the IMP calculation time and improve the accuracy of the outputs :1) TWTA curve fitting method by LS (Least Square), 2) IMP evaluation technique which is based on a look-up table 3) Gaussian spectral shaping for PSK signal instead of convolution. The IMP evaluation results obtained by the new approaches introduced in this paper resulted in a good match with the published outputs in the open literature and showed improved performance especially in the TWTA curve .

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    The Development & Simulation for the Isolation Mount installed in Aircraft (항공용 마운트의 개발과 시뮬레이션)

    • Jeon, Hee-Ho;Park, Jae-Min;Lee, Seung-Joon
      • Transactions of the Korean Society for Noise and Vibration Engineering
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      • v.20 no.3
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      • pp.223-228
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      • 2010
    • The mount which is used in military airplane should be operated in various situations such as vibration, shock and temperature. The recent mounts cost a lot and take much time to replace when they broke down. That's why new mount was produced in domestic by reverse engineering and the product has been proved its performance through environment test regarding vibration and shock. According to simulation of dynamic characteristics on vibration and shock, the result turns out to be similar to the result of the environmental test with an error of within 10 percent. As a result this research, a draft of the military aviation mount designing program is arranged.


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