民生用16bit-MPUの宇宙放射線試験(機械力学,計測,自動制御)

概要

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The radiation test of a commercial 16 bit-MPU was conducted for the application to the onboard computers of small satellites. This MPU is commercially available and equipped with flash EEPROM, SRAM (4 kbyte), A/D-D/A converter, serial communication interface and peripheral I/O functions. To predict the error rate by the radiation in space environment, a preliminary test was conducted using a Californium-252 radio isotope source at National Space Development Agency of Japan (NASDA), and the tolerance of the MPU was confirmed. As a next step, a radiation test using a large accelerator was conducted at Japan Atomic Energy Research Institute (JAERI), and the error rates of SEU (Single Event Upset) and SEL (Single Event Latch-up) were evaluated precisely. The calculated result by CREME software showed relatively low rates of SEU and SEL in the space environment of the orbit at an altitude of 450 km.
社団法人日本機械学会の論文
2003-10-25