• Defense and Technology
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• no.5 s.267
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• pp.34-41
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• 2001

자동장전장치를 적용하면서 얻게 되는 중요한 장점은 발사속도의 향상이다. 전차에서의 발사속도는 중구경화기나 자주포와 같은 최대발사성능보다는 초탄에 의한 표적파괴 실패시 후속탄의 신속한 재사격 능력이라는 관점이 더 중요하며, 자동장전장치는 이러한 측면에서 수동장전보다 장전속도를 증대시킬 수 있고 특히 기동간에도 정지시와 동일한 후속탄 장전성능을 보장해 줄 수 있다는 점에서 수동장전에 비해 커다란 전력증강 효과를 가져올 수 있다.

• Defense and Technology
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• no.4 s.266
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• pp.34-43
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• 2001

자동장전장치를 적용하면서 얻게 되는 중요한 장점은 발사속도의 향상이다. 전차에서의 발사속도는 중구경화기나 자주포와 같은 최대발사성능보다는 초탄에 의한 표적파괴 실패시 후속탄의 신속한 재사격 능력이라는 관점이 더 중요하며, 자동장전장치는 이러한 측면에서 수동장전보다 장전속도를 증대시킬 수 있고 특히 기동간에도 정지시와 동일한 후속탄 장전성능을 보장해 줄 수 있다는 점에서 수동장전에 비해 커다란 전력증강 효과를 가져올 수 있다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.8
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• pp.156-163
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• 2019

In this paper, we present the process of developing an automatic carrying and arming system for testing ammunition. When carrying out shooting tests at a domestic rifle range, most of the ammunition operations are carried out by human manpower The series of test processes, such as transporting, arming and firing of heavy munitions, is repeated by employing human. If the ammunition is loaded via manpower, then problems can occur such as loss of reliability of test results, musculoskeletal disorders of humans and also safety accidents can occur. To address these problems, an automated system was developed for the transport and operation of ammunition. This paper covers the design, manufacture and operation of the developed system. In addition, this study validated the effectiveness of the system as compared to the human operation. Our results show that the developed system can be easily adapted to testing ammunition at a domestic rifle range.

• Proceedings of the Korean Magnestics Society Conference
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• 2007.12a
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• pp.242-243
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• 2007

• Journal of the Institute of Electronics and Information Engineers
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• v.51 no.10
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• pp.197-203
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• 2014

The safety and arming device(SAD), one of the components of the fuzes, shall provide safety that is consistent with handling, storage, transportation, use, and disposal. In this paper, we describes the design of the SAD which includes the solenoid assembly and the solenoid driving circuit to improve the safety of the fuzes. The solenoid assembly consists of a coil assembly, a restoring spring, and a core. The solenoid assembly is added in the SAD as an additional safety device. In case of the normal circumstances, the core of the solenoid assembly restrains the $1^{st}$ and $2^{nd}$ safety devices of the SAD for those devices not to operate at all, so that the SAD can secure safety for storage, transportation, and use. In contrast, when the battery power is provided to the solenoid driving circuit just before the flight, the core confirms the power level and starts removing the restraint from the $1^{st}$ and $2^{nd}$ safety devices of the SAD, and then the SAD is able to change its mode from safety mode to armed mode. After firing, once the SAD's operations complete, the turned-on arming switch stops providing the power to the solenoid assembly automatically. It can reduce the power consumption at solenoid assembly. Therefore, the proposed solenoid driving circuit for the solenoid assembly not only unlocks the restrained solenoid assembly from the safety devices, but also saves the power consumption during the flight.

• Proceedings of the KIEE Conference
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• 2008.04a
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• pp.121-122
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• 2008

본 논문에서는 2차 경로의 추정을 통하여 안정성이 강화된 능동소음 제어 시스템을 제안한다. LMS 알고리즘은 구조가 단순하고 계산량이 적은 장전이 있지만, 광대역 소음원에 적용할 경우 수렴 성능이 좋지 않은 단점이 있으며, 2차 경로 및 소음원 입력의 파워가 시변 할 경우 적응 알고리즘의 안정성이 약화되는 문제점이 발생한다. 본 논문에서는 지속적으로 누적 오차를 추적하여 일정 값 이상으로 증가하면 자동적으로 2차 경로 전달함수를 새로 추정하는 자동오프라인 추정 기법을 제안하였다. 공조용 덕트에 광대역 소음을 적용하여 제안된 능동소음제어 시스템을 실험을 수행한 결과 우수한 특성을 얻었다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1996.11a
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• pp.1004-1011
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• 1996

This paper covers the technology developmental stage work for the automatic ammunition loading system mainly focusing on the controller design of the electro-hydranlic type direct drive multi-axis manipulator. Mathematical model of the plant derived and PIDM servo-controller structured. Comparative study between the analytical and experimental work has been carried out to help understand the response property of the direct dine multi-axis robot. In the direct drive robot, non-negligible amount of disturbance and load Induced dynamics variation are transmitted to the drive axis and nonlinearity is highly observed. Thereupon a robust controller Implementing time-delay control law is proposed, and computer simulation confirms the possibility for the time-delay control application against the unpredictable disturbance and load-Induced dynamics variation.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.07a
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• pp.105-106
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• 2021

자동사격통제기능 및 탄의 자동장전기능을 가진 최신 무기체계의 동력장치는 엔진, 변속기 및 냉각장치로 구성되어 있다. 이러한 동력장치를 정비하기 위해서는 엔진과 변속기를 결합 및 분리할 수 있는 특수공구의 사용이 필수적이다. 하지만, 기존 제품은 사용 특성에 따라 비틀림이 심하여 쉽게 마모되는 현상을 가진다. 본 연구에서는 강도저하로 인한 잦은 파손현상과 엔진 우측 연결부 조임 시 간접 현상에 자유로운 공구를 제안하고자 한다. 구조해석 프로그램(ABAQUS)을 통한 비틀림 강도 해석과 이를 바탕으로 최적 설계를 진행하여 제작된 공구는 기존 문제점을 해결하고 공인인증기관에서 토크의 130%의 비틀림 실험에서 문제없음을 확인하였다. 본 연구의 결과물은 동력장치 정비를 위한 특수공구의 국산화로 인한 경제적 측면에서 큰 도움이 될 것으로 사료된다.

• Nuclear Engineering and Technology
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• v.25 no.3
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• pp.424-429
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• 1993

Numeric characters are printed at the end part of nuclear fuel rod containing nuclear pellets. Fuel rods are discriminated and managed systematically by these characters in the process of producing fuel assembly. The characters are also used to examine manufacturing process of fuel rods in the survey of burnup efficiency as well as in inspection of irradiated fuel rod. Therefore automatic character recognition is one of the most important technologies in automatic manufacture of fuel assembly. In this study, character recognition system is developed. In the developed system, mesh feature extracted from each character written in the fuel rod has been compared with reference feature value stored in database, and the character is thus identified. In the result of experiment, 95.83 percent recognition rate is achievable.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.35 no.1
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• pp.17-24
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• 2011

It is reported that an intermittently rotating chamber system will improve the ratio of firepower to armament space in the case of mid-calibre automatic guns. However, the parallel index, which is a main component of the system, tends to be torsionally flexible due to the low lateral stiffness of cam followers on the index turret. This may cause the shaft system connecting the turret with the chamber prone to considerable residual torsional vibration so that serious misalignment problems occur during ammunition loading and firing processes. Herein, an electrorhelogical (ER) fluid actuator that can suppress such vibrations and the associated semiactive control algorithm are proposed. By mathematical modeling and computer simulations, the performance of the entire system is proved satisfactory.