Research On Reliability Of Missile Borne Storage Test System

With the continuous development of national defense career,the missile-carrying storage test system,as the carrier of the key signal test of new missiles,plays an increasingly important role,with its reliability related to the accuracy of test data and later design and research.Because of its characteristics of high emission overload,single use,and long-term storage,the missile-carrying storage test system has many problems in reliability evaluation and utility,which leads to occasionally launch failure under the condition of high overload.According to the previous dysfunction analysis theory,it is hard to find an accurate reason,therefore it can only be concluded that environmental stress may affect the reliability of the test system under high overload.At the present stage,the reliability index given by the research unit is only an empirical estimate with a statistical significance,which lacks effects of increasingly parameter degradation of the quantitative description system during the storage process and effects of reliability under the impact load from the outside.With respect to the above situation,the present thesis designs a missile-carrying storage test system that both satisfies the requirements of miniaturization under the compact design condition and bears the hostile environment such as high temperature,high pressure,strong impact vibration and high overload conditions;and it also can meet the whole trajectory dynamic parameter test of the required environment.By the embedment of a new missile warhead,the missile-carrying storage test system is capable of independently completing high-speed signal collection and mass storage under a hostile environment.The test system is composed of two parts,a sensing unit part and a recorder part.The sensing unit part is mainly responsible for the front-end data collection,whereas the recorder part mainly responsible fordata adjustment and storage.By adopting a multi-channel selection design,32-way key signals can be recorded,which provides bases for analysis and research of the new missile,and a negative delay invalid block reserved design and a channel mismatch correct design are added,which improves accuracy of the data.Considering the high cost of the test,the present thesis,from the point of a high reliability design,makes a theoretical analysis and verification,a battery shock resistance test,a projectile penetration simulation and a test for the system protection.At the same time,based on the perspective of a reliability analysis of performance degradation,the present thesis introduces two kinds of failure modes,the degenerative failure mode and the sudden failure mode,comprehensively analyzes the dynamic measurement data and the static test data of the test system performance parameters,and studies its reliability.Finally,through the experiment,the design rationality and the performance reliability of the present test system is proved.The present thesis,by introducing a reliability analysis based on performance degradation,provides a method for reliability analysis and life evaluation of the test system under high overload,and has a significant meaning because it broadens the research scope of storage life evaluation,and offers a theoretical support for the scientific life evaluation of the test system.