• Title/Summary/Keyword: Combined array

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Robust Design to the Combined Array with Multiresponse

  • Kwon, Yong-Man
    • Journal of Integrative Natural Science
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    • v.10 no.1
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    • pp.51-57
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    • 2017
  • The Taguchi parameter design in industry is an approach to reducing performance variation of quality characteristic in products and processes. In the Taguchi parameter design, the product array approach using orthogonal arrays is mainly used. It often requires an excessive number of experiments. An alternative approach, which is called the combined array approach, was studied. In these studies, only single response was considered. In this paper we propose how to simultaneously optimize multiresponse for the robust design using the combined array approach.

Simultaneous Optimization for Robust Design Using Desirability Function to the Combined Array

  • Kwon, Yong-Man;Hong, Yeon-Woong
    • 한국데이터정보과학회:학술대회논문집
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    • 2002.06a
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    • pp.97-106
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    • 2002
  • Taguchi parameter design, the product-array approach using orthogonal arrays is mainly used. However, it often requires an excessive number of experiments. An alternative approach, which is called the combined-array approach, was suggested by Welch et. al. and studied by others. In these studies, only single quality characteristic was considered. We propose how to simultaneously optimize multiple quality characteristics using desirability function when we used the combined-array approach to assign control and noise factors. An example is illustrated to the combined-array approach.

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Combined and Product Array Approaches in Simultaneous Optimization of Multiple Responses (다특성 동시최적화를 위한 통합배열과 교차배열 접근의 비교연구)

  • Lee, Jae-Hoon;Park, Sung-Hyun
    • Journal of Korean Society for Quality Management
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    • v.34 no.4
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    • pp.93-101
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    • 2006
  • Robust parameter design is an off-line production technique for reducing variation and improving the quality of products and processes by using product arrays. However, the use of the product arrays usually requires a large number of runs. To overcome the drawback of the product array, the combined array can be used. Also optimizing multiple responses is increasingly important in industry. Using simultaneous optimization measures, we can deal with the multiple response case. In this paper we compare the simultaneous optimization using the Taguchi's product array with using the combined array. And models possible to set on combined arrays are also investigated and compared with the cases of product arrays.

Simultaneous Optimization for Robust Design using Distance and Desirability Function

  • Kwon, Yong-Man
    • Communications for Statistical Applications and Methods
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    • v.8 no.3
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    • pp.685-696
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    • 2001
  • Robust design is an approach to reducing performance variation of response values in products and processes. In the Taguchl parameter design, the product-array approach using orthogonal arrays is mainly used. However, it often requires an excessive number of experiments. An alternative approach, which is called the combined-array approach, was suggested by Welch et. al. (1990) and studied by others. In these studies, only single response variable was considered. We propose how to simultaneously optimize multiple responses when there are correlations among responses, and when we use the combined-array approach to assign control and noise factors. An example is illustrated to show the difference between the Taguchi's product-array approach and the combined-array approach.

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Angle-of-Arrival Estimation Algorithm Based on Combined Array Antenna

  • Kim, Tae-yun;Hwang, Suk-seung
    • Journal of Positioning, Navigation, and Timing
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    • v.10 no.2
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    • pp.131-137
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    • 2021
  • The Angle-of-Arrival (AOA) estimation in real time is one of core technologies for the real-time tracking system, such as a radar or a satellite. Although AOA estimation algorithms for various antenna types have been studied, most of them are for the single-shaped array antenna suitable to the specific frequency. In this paper, we propose the cascade AOA estimation algorithm for the combined array antenna with Uniform Rectangular Frame Array (URFA) and Uniform Circular Array (UCA), with the excellent performance for various frequencies. The proposed technique is consisted of Capon for roughly finding AOA groups with multiple signal AOAs and Beamspace Multiple Signal Classification (MUSIC) for estimating the detailed signal AOA in the AOA group, for the combined array antenna. In addition, we provide computer simulation results for verifying the estimation performance of the proposed algorithm.

Simultaneous Optimization of Multiple Responses to the Combined Array

  • Kwon, Yong-Man
    • Journal of the Korean Data and Information Science Society
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    • v.12 no.2
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    • pp.57-64
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    • 2001
  • In the Taguchi parameter design, the product-array approach using orthogonal arrays is mainly used. However, it often requires an excessive number of experiments. An alternative approach, which is called the combined-array approach, was suggested by Welch et al (1990) and studied by Vining and Myers (1990) and others. In these studies, only single respouse variable was considered. We propose how to simultaneously optimize multiple responses when there are correlations among responses.

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Robust Design using Desirability Function to the Combined-Array with Multiple Quality Characteristics

  • Kwon, Yong-Man;Lee, Jang-Jae
    • Journal of Integrative Natural Science
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    • v.6 no.1
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    • pp.39-45
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    • 2013
  • Robust design is an approach to reducing performance variation of quality characteristic values in quality engineering. Taguchi has an idea that mean and variation are handled simultaneously to reduce the expected loss in products and processes. In the Taguchi parameter design, the product-array approach using orthogonal arrays is mainly used. However, it often requires an excessive number of experiments. An alternative approach, which is called the combined-array approach, was studied. In these studies, only single quality characteristic (or response) was considered. In this paper we propose how to simultaneously optimize for multiple quality characteristics (or multiresponse) using desirability function when we used the combined-array approach to assign control and noise factors.

Design of 8 Channel Insertional pTx Array Coil for 3T Body Imaging (8 채널 삽입형 3T Body pTx Array 코일 설계)

  • Kim, Young Beom;Ryu, Yeunchul
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.63 no.4
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    • pp.546-550
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    • 2014
  • In this research, we report all the elements are placed in the space above the patient table as a transmit coil to give optimized B1+ field for the body object. Through the simulations, we compared upper-and-lower parts combined 8 channel Tx array to upper only 8 channel Tx array and showed the utilities of B1+ shimming in multi-channel Tx body imaging at 3T. Half-cylinder shaped upper array shows weak B1+ field area around back of patient without B1+ shimming. After B1+ shimming, highly induced SAR places occurred in the arm region due to the close distance to the both end elements which were driven by very high RF current to enhance B1+ in back area. The proposed upper and lower combined array provides an enhanced homogeneous B1+ field in large ROI imaging as a result of shimming over the body size phantom. Through this research we proved the usefulness of the proposed insertional upper and lower parts combined transmit array for 3T body imaging.

Multiple Response Optimization for Robust Design using Desirability Function

  • Kwon, Yong-Man;Hong, Yeon-Woong;Chang, Duk-Joon
    • Journal of the Korean Data and Information Science Society
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    • v.14 no.2
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    • pp.325-335
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    • 2003
  • Robust design is to identify appropriate settings of control factors that make the system's performance robust to to changes in the noise factors that represent the source of variation. In the Taguchi parameter design, the product array approach using orthogonal arrays is mainly used. However, it often requires an excessive number of experiments. An alternative approach, which is called the combined array approach, was suggested by Welch et. al. (1990) and studied by others. In these studies, only single response variable was considered. We propose how to simultaneously optimize multiple responses when we use the combined array approach.

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A Study on Multiple Response Optimization for Robust Design using Desirability Function

  • Kwon, Yong-Man;Chang, Duk-Joon;Hong, Yeon-Woong
    • 한국데이터정보과학회:학술대회논문집
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    • 2003.05a
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    • pp.65-75
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    • 2003
  • In the Taguchi parameter design, the product array approach using orthogonal arrays is mainly used. However, it often requires an excessive number of experiments. An alternative approach, which is called the combined array approach, was suggested by Welch et. al. (1990) and studied by others. In these studies, only single response variable was considered. We propose how to simultaneously optimize multiple responses when we use the combined array approach.

  • PDF