The Study on Performance of MEMS IMU for Launch Vehicle under High Vibration Environment

Accuracy of MEMS gyroscope and MEMS accelerometer h as been improving in recent years and JAXA has been studying a navigation grade Inertial Measurement Un it (IMU) using MEMS gyroscope and MEMS acceleromete r for launch vehicles. One of issues for applying MEMS IM U for launch vehicles is to maintain measurement ac curacy under high vibration environment during launch phase. Thu s we developed a trial model of high accuracy MEMS I U and evaluated the measurement accuracy of the MEMS IMU under high vibration environment by random vibratio n test. This paper presents the issues of MEMS IMU for launch ve icl s, the trial model of MEMS IMU, and evaluation results of the MEMS IMU under high vibration environment.