Reliability Analysis Of Hard X-ray Modulation Telescope's High Energy Electronic System

For analyzing the celestial high-energy process and answering some basic questions of astrophysics, the energy segment of Hard X-ray is the key wave band in observation and study of the celestial high-energy radiation. Hard X-ray Modulation Telescope (HXMT) is an astrophysics telescope that is being studied in China. Based on the innovation of Hard X-ray image technology and methodology of data analysis, HXMT is capable of performing a hard X-ray all-sky observation and deep surveys of corresponded sky regions. It will be the most sensitive telescope all over the world after being accomplished. As the core element of the telescope, High Energy Electronic System (HES) is responsible for the telescope's data gathering and controlling.HXMT will be set up on the satellite, so as the supermatic system in orbit, it cannot be preserved during the period of operation. It will cause heavy losses in many ways if the system malfunctions. HXMT face the aerospace which is more complex than on the earth, so it is necessary and essential to do strict reliability design for HES.The thesis made the reliability prediction of HES by using the parts count method and part stress analysis method which be recommend by GJB/Z 299C-2006. The thesis analyzed HES's mission sections and failure criteria, then drawn the reliability block diagrams of HES and calculated the failure rate of PDAU, SDAU, ASU and finally HES. Then research of comparison is performed on block backup and dual system cold redundancy. The diagram of reliability vary with time is also be drawn. At the end of the thesis, the reliability analysis of HES has been done with the method of FMEA.