摘要
常规弹药在发射过程中具有高过载及高速旋转的特点,导致惯性测量单元由于过载和传感器量程不足无法实现正确测量,针对该问题设计了一种基于弹体自身旋转作为驱动的三轴MEMS陀螺.本文首先对该陀螺的工作原理及输出特性进行了分析,设计了相应的测试平台;然后借鉴常规陀螺的测试方法对其进行测试标定;最后对该陀螺输出与加速度关系、标度因数、非线性度、分辨率等性能进行了测试.从而验证该陀螺能够实现对外部角速率的测量,且能够正确敏感外部角速率的变化,最终验证了所设计陀螺的正确性.
To resolve the limitations of conventional gyroscope work under the high speed rotating ammunition,a triaxial MEMS gyroscope based on rotating of projectile itself as a drivers was designed.First of all,the basic working principle of gyro and signal detection methods were introduced.Then the corresponding test platform was designed.Then test calibrate the gyro by learning from the conventional gyro reference test method.Finally,the relationship between the gyro output and acceleration,scale factor,non-linearity,resolution and other properties were tested.Through test and analysis,we can know when the driver angular rate is 500r/min,the scale factor of the gyro is 4.388mV/（（°）·s^-1）,nonlinearity is 0.11%,the resolution can reach 0.1（°）/s.The design principle of this gyro is proved to be correct,which can sense the change of external angular rate correctly.
出处
《测试技术学报》
2015年第2期118-122,共5页
Journal of Test and Measurement Technology
关键词
微机械陀螺
旋转弹
MEMS陀螺
性能测试
micro mechanical gyro
rotating ammunition
MEMS gyroscope
performance test
