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์ต๊ทผ์๋ ๋ชจ์(Parametric) ์ถ์ ๋ฐฉ๋ฒ์ ์ ์ฉํ ์ ์ฐ๋ชจ๋ธ๋ค์ด ๊ฐ๋ฐ๋์ด ๋น์ฉ๋ถ์์ ๋ณด๋ค ํจ์จ์ ์ผ๋ก ์์ธกํ ์ ์๋ ์ฉ๋๋ก ์ฌ์ฉ๋๊ณ ์๋ ์ถ์ธ์ด๋ค. ๋ณธ ์ฐ๊ตฌ์์๋ ์ ๋๋ฌด๊ธฐ์ฒด๊ณ ๋ถ์ผ ์ค ์ ๋์กฐ์ข ์ฅ์น์ ๋ํ ๋ฐ์ดํฐ ๊ฒฝํ์น๋ฅผ ํ์ฉํ์ฌ ๊ณตํ์ ์ถ์ ๋ฐฉ๋ฒ๊ณผ ์์ฉ์ ์ฐ๋ชจ๋ธ(Price H, HL, M, S)์ ๋น์ฉ๋ถ์์ ์ํํ๊ณ , ๊ทธ ๊ฒฐ๊ณผ๋ฅผ ๋ถ์ํ์ฌ ์ฐจ์ด์ ๊ณผ ์์ธ์ ํ์ ํ์๋ค. ์ ์ฐ๋ชจ๋ธ์ ์์น์ ๋ฐ์ดํฐ๋ก ์ดํด ๋ณธ ๋ฐ์ ๋ฐ๋ฅด๋ฉด ์ ์ฌ์ฅ๋น ๋ฐ์ดํฐ๋ฒ ์ด์ค์์ ๋น๊ต ๊ฐ์ ๊ทผ๊ฑฐ๋ก ํ์ฌ ๋ณด์ ๋ ๊ฒฐ๊ณผ ๊ฐ์ ๋์ถํ ํ, ๊ณตํ์ ์ถ์ ๋ฐฉ๋ฒ์ผ๋ก ์ฐ์ ๋ ๊ธ์ก๊ณผ ๋น๊ต๊ฒฐ๊ณผ ๊ทผ์ฌํ ์์น๋ฅผ ๋ณด์ฌ ๋ณด์ ์์ ์ ํตํ ๋ฐ์ดํฐ์ ์ ๋ขฐ๋๊ฐ ํฅ์๋จ์ ์ ์ ์์๋ค. ๋ณธ ์ฐ๊ตฌ์์ ๊ฐ๋ฐ๋น ์ถ์ ์, ๋ง์ ๋ถ๋ถ์ ๋ถํ์คํ ์์์์ ์ถ์ ํ์์ผ๋, ๊ฐ๊ด์ฑ์ ํ๋ณดํ ์ ์๋ ์ ์ฐ๋ชจ๋ธ์ ์ ํํ์ฌ ์ฌ๋ก๋ฅผ ์ฐ๊ตฌํจ์ผ๋ก์ ์ ๋ขฐ์ฑ์ ๋์ผ ์ ์์๋ค. ์ด๋ ๊ธฐ์กด์ ์ถ์ ๋ ๊ฐ๋ฐ๋น ๋ฐ์ดํฐ์ ๊ทผ๊ฑฐํ์ฌ ๋ณ์๋ฅผ ์ค์ฌ์ผ๋ก ํ ์ถ์ ๋ฐฉ๋ฒ์ ๊ธฐ์ด๋ก ํฉ๋ฆฌ์ ์ธ ์ถ์ ๋ฐฉ๋ฒ์ผ๋ก๋ ํ์ฉํ ์ ์์์ ๋น์ฉ๋ถ์์ ์ ์ฐ๋ชจ๋ธ ๋ณด์ (Calibration)์ ํตํ์ฌ ๋ฐํ๋์ผ๋ก์จ ๋ณด๋ค ํจ์จ์ ์ธ ๋น์ฉ ์์ธก ๊ธฐ๋ฅ์ ์ผ์กฐํ ๊ฒ์ผ๋ก ์ฌ๋ฃ๋๋ค. In recent years, computational models using parametric estimation method have been developed and used widely for efficient cost analysis. In this research, by applying experienced data from Guidance and Control Systems in Missile System field, the cost analysis for engineering model and commercial computational model(Price H, HL, M, S) are conducted and its result is analysed, so that the difference between two models and its grounds are apprehended. Comparing the calibrated value of computational model based on the data base of similar equipment and the cost from the engineering estimation, the two results are very close. It means that the credibility of data is enhanced through calibration. Also, for cost analysis of similar components in the future, the method for calibration of the computational models is also examined. When estimating development cost in this research, although many parts have been estimated through uncertain elements, the reliability could have been enhanced by applying computational model which secures objectivity. It is a very reasonable estimation method by utilizing calibration of the computational models based on existing accumulated development data.
Chung-Hee Park (Wed,) studied this question.