프로빗 모델 기반 핀풀러의 작동 신뢰도 추정Functional Reliability Estimation of Pin Pullers Based on a Probit Model
- Other Titles
- Functional Reliability Estimation of Pin Pullers Based on a Probit Model
- Authors
- 문병민; 이진욱; 김남호; 최창선; 김재일; Bae, Suk Joo
- Issue Date
- Apr-2017
- Publisher
- 한국군사과학기술학회
- Keywords
- Delta Method; Functional Reliability; Method of Maximum Likelihood; Probit Model; Pyrotechnic Mechanical Device(PMD); 델타방법; 작동 신뢰도; 최우추정법; 프로빗 모델; Pyrotechnic Mechanical Device(PMD)
- Citation
- 한국군사과학기술학회지, v.20, no.2, pp.225 - 230
- Indexed
- KCI
- Journal Title
- 한국군사과학기술학회지
- Volume
- 20
- Number
- 2
- Start Page
- 225
- End Page
- 230
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/152534
- DOI
- 10.9766/KIMST.2017.20.2.225
- ISSN
- 1598-9127
- Abstract
- To generate mechanical movements in one-shot devices such as missiles and space launch vehicles, pyrotechnic mechanical device(PMD) such as pin pullers using pyrotechnic charge has been widely used. Reliability prediction of pin pullers is crucial to successfully execute target missions for the one-shot devices. Because the pin pullers require destructive tests to evaluate their reliability, one would need about 3,000 samples of success to guarantee a reliability of 99.9 % with a confidence level of 95 %. This paper suggests the application of a probit model using the charge amount as a functional parameter for estimation of functional reliability of pin puller. To guarantee target reliability, we propose estimation methods of the lower bound of functional reliability by applying the probit model. Given lower bound of functional reliability, we quantitatively show that the optimum amount of charge increases as the number of samples decreases. Along with a variety of simulations the validity of our new model via real test results is confirmed.
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