• Title, Summary, Keyword: Taguchi Method

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The Development of Taguchi and Response Surface Method Combined Model (Taguchi-RSM 통합모델 제시)

  • Ree, Sang-Bok;Kim, Youn-Soo;Yoon, Sang-Woon
    • IE interfaces
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    • v.23 no.3
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    • pp.257-263
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    • 2010
  • Taguchi defined a good quality as 'A correspondence of product characteristic's expected value to the objective value satisfying the minimum variance condition.' For his good quality, he suggested Taguchi Method which is called Robust design which is irrelevant to the effect of these noise factors. Taguchi Method which has many success examples and which is used by many manufacturing industry. But Optimal solution of Taguchi Method is one among the experiments which is not optimal area of experiment point. On the other hand, Response Surface Method (RSM) which has advantage to find optimal solution area experiments points by approximate polynomial regression. But Optimal of RSM is depended on initial point and RSM can not use many factors because of a great many experiment. In this paper, we combine the Taguchi Method and the Response Surface Method with each advantage which is called Taguchi-RSM. Taguchi-RSM has two step, first step to find first solution by Taguchi Method, second step to find optimal solution by RSM with initial point as first step solution. We give example using catapults.

Case Studies on Strengths and Weaknesses of Taguchi Method (다구치 방법의 강점 및 약점에 대한 사례 연구)

  • Kwon, Hyuck Moo;Jang, Hyeon Ae
    • Journal of Korean Institute of Industrial Engineers
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    • v.39 no.5
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    • pp.383-392
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    • 2013
  • Taguchi method is a technique widely used in industries to attain a reliable quality even under existence of various noise variables. Basically, it relies on the interactions between the controllable and the noise factors. Under insignificant interactions between the design parameters and noises, the effectiveness of Taguchi methodology will be doubtful. Furthermore, existence of strong interactions among controllable factors may undermine the power of Taguchi approach. An abundant crop may be expected by a well planned Taguchi approach. A well designed set of experiments is one of the important prerequisites for its successful result. For this, we must have a clear understanding on strengths and weaknesses of Taguchi methodology together with a sound knowledge on the applicable system. This study provides some insights on Taguchi approach based on two case examples of one successful and the other unsuccessful. Eventually, this research aims to facilitate deeper understanding and right application of Taguchi methodology in industries.

Analysis and Improvement of Interior Noise in a Passenger Car using Taguchi Orthogonal Array (다구찌 직교배열을 이용한 승용차의 실내소음 분석 및 개선)

  • 김명업;이두호
    • Journal of KSNVE
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    • v.9 no.5
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    • pp.998-1004
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    • 1999
  • The passenger car manufacturer should meet more and more strict requirements of customers on noise and vibration problems. It is proven that the Taguchi method is a powerful tool for improving the product quality in many areas. This paper employs the Taguchi method to reduce low-frequency booming noise in a passenger car. Selection of object function is very important to minimize interaction effects in the Taguchi method. We select logarithmic-scaled sound pressure level as an object function, which is commonly used to analyze the noise and vibration signals. The optimum noise level predicted with additive-model assumption agrees well with the test results. In addition, the optimum level is lower than the initial one by about 5 dB without any adverse effects. The results show that the Taguchi method can be applied efficiently to solve the noise problem in the passenger cars.

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Application of Taguchi Experimental Design for the Optimization of Effective Parameters on the Rapeseed Methyl Ester Production

  • Kim, Sun-Tae;Yim, Bong-Been;Park, Young-Taek
    • Environmental Engineering Research
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    • v.15 no.3
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    • pp.129-134
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    • 2010
  • The optimization of experimental parameters, such as catalyst type, catalyst concentration, molar ratio of alcohol to oil and reaction temperature, on the transesterification for the production of rapeseed methyl ester has been studied. The Taguchi approach (Taguchi method) was adopted as the experimental design methodology, which was adequate for understanding the effects of the control parameters and to optimize the experimental conditions from a limited number of experiments. The optimal experimental conditions obtained from this study were potassium hydroxide as the catalyst, at a concentration of 1.5 wt %, and a reaction temperature of $60^{\circ}C$. According to Taguchi method, the catalyst concentration played the most important role in the yield of rapeseed methyl ester. Finally, the yield of rapeseed methyl ester was improved to 96.7% with the by optimal conditions of the control parameters which were obtained by Taguchi method.

Quality Improvement Using Taguchi Method (다구찌 기법 이용으로 품질개선)

  • 이기영
    • Journal of the Korean Professional Engineers Association
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    • v.33 no.1
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    • pp.83-88
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    • 2000
  • Taguchi developed and provided various independent methods for actual application in design of experiments. Taguchi method is described in philosophy, method and others related to quality management. This thesis is one of case studies for improving the bond strength of epoxy resin by Taguchi method which is applied as a optimum developing tool in six sigma management revolution in many companies.

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Study of Muffler for Rotary Compressor by Taguchi Method Viewpoint (회전형 압축기용 머플러의 연구(1) : 다꾸찌 기법 관점에서)

  • 박성근
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • pp.548-553
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    • 1998
  • The specific noise level of 18 rotary compressor mufflers were measured and these data were analyzed by the Taguchi robust design method and the neural network. The optimal design value obtained by the neural network generally showed good agreement with that by the Taguchi method. The effects of eight important design variables on the specific noise level were discussed.

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Robust Design for WCDMA Node B Amplifier by Taguchi Method and HALT (High Accelerated Life Test) (Taguchi Method 와 HALT(High Accelerated Life Test)를 이용한 WCDMA Node B Amplifier 강건설계)

  • Lee, Jun-Seo;Roh, Young-Seok;Hong, Jin-Pyo;Ahn, Kwang-Eun;Yon, Chul-Heum
    • 한국정보통신설비학회:학술대회논문집
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    • pp.407-410
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    • 2007
  • In the RRH (Radio Remote Head) of a WCDMA Node B System, an HPA (High Power Amplifier) is used in order to amplify the transmission RF signal. Upon designing an HPA, the design requirements demand that the intermodulation characteristics are optimized during design and that the stability of the characteristics is maintained in the field. In this DOE (Design of Experiments) research, a few vital factors that affect intermodulation characteristics were first selected; then, an optimal solution was produced for high reliability in a noisy environment in the field by employing the Taguchi Method, a statistical method used for a robust design. Furthermore, by employing HALT(High Accelerated Life Test) during the verification test, this experiment has verified that an HPA that was designed using the Taguchi Method proved to be a far more robust design than an HPA that was designed without using the method.

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Parameter Design of an ER Panel for Noise Reduction using Taguchi Method (다구찌법을 이용한 소음저감용 ER 패널의 파라미터 설계)

  • 윤영민;김재환;최승복
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • pp.638-642
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    • 2003
  • This paper presents a parameter design of an Electrorheological(ER) panel for noise reduction using Taguchi method. Taguchi method is a robust design method that determines control parameters in the presence of noise effect. Host structure thickness, spacer thickness, base oil viscosity and the weight ratio of ER particles are chosen for the control factors. A test setup in an SAE J1400 facility is used to analyze the sound transmission loss. The sensitivity of each factor with signal-to-noise(S/N) ratio and analysis of variance are investigated. The analysis results show that the weight ratio of ER particle and base oil viscosity of the ER fluid mostly affects the noise reduction in the presence of electric field. Based on the Taguchi method, an optimal configuration was designed and comparison is made with experimental result fer the verification.

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Development of an Optimization Algorithm based on the Taguchi method (다구찌법을 이용한 최적설계 알고리듬의 개발 및 구현)

  • Lee, Sang-Hoon;Kwak, Byung-Man
    • Proceedings of the KSME Conference
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    • pp.565-571
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    • 2001
  • As a method of structural optimization, a practical algorithm based on the Taguchi method is developed. The Taguchi method is applied iteratively updating the level values of design variables. The design region is translated or reduced during optimization and by appropriate choice of reduction factor and initial level intervals, a near-optimum solution can be found very efficiently. To treat inequality constraints, a variable penalty method is utilized. A software system named 'DS/Taguchi' is developed by integrating the proposed algorithm and commercial finite element analysis codes on the parametric CAD platform. Two examples are taken to examine the performance of the proposed algorithm and the developed software system.

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