小型化MEMS制导仪标定与误差补偿方法研究

发布时间：2017-12-28 02:07

本文关键词：小型化MEMS制导仪标定与误差补偿方法研究　出处：《导航定位与授时》2015年06期 　论文类型：期刊论文

更多相关文章： 制导仪 三轴MEMS陀螺仪 误差补偿 标定

【摘要】：为了提高某小型化制导仪中的低精度三轴MEMS(Micro-electromechanical Systems)陀螺仪的测量精度,建立了误差补偿模型,并基于三轴转台安排了标定试验,求得模型参数,并进行解耦验证。由于惯性器件温度漂移和温度测量过程中的滞后现象,针对陀螺仪进行-40℃~50℃的温度标定试验,采用一元高阶模型对陀螺仪温度漂移误差进行补偿,并通过MATLAB对该温度范围内的标定测试数据进行曲线拟合,得到零位相对温度变化的的拟合函数,并分离出相应的系数。试验结果表明,采用该种标定与误差补偿方法比传统方法节省了大量时间和人力,而且还能够快速标定出温度系数,从而有效地提高了陀螺仪的测量精度。
[Abstract]:In order to improve the measurement accuracy of a low precision three axis MEMS (Micro-electromechanical Systems) gyroscope in a miniaturized guidance instrument, an error compensation model is established. Based on the three axis turntable, the calibration test is arranged, and the parameters of the model are obtained, and the decoupling verification is carried out. Due to the inertia of temperature drift and temperature in the process of measuring hysteresis, -40 ~50 DEG C for gyro temperature calibration test by a high order model to compensate the temperature drift error of gyroscope, and through MATLAB in the temperature range of the calibration test data by curve fitting, get zero relative temperature change fitting function the corresponding coefficient and separating. The experimental results show that the calibration and error compensation method saves much time and manpower compared with the traditional method, and it can also quickly calibrate the temperature coefficient, so as to effectively improve the measurement accuracy of the gyroscope.
【作者单位】：贵州航天控制技术有限公司;
【分类号】：TN96
【正文快照】： 0引言低成本MEMS陀螺仪以其尺寸小、功耗低、重量轻在惯性测量系统中的应用越来越广泛,但目前低成本MEMS陀螺仪的使用精度较低仍然是影响其使用范围的主要原因。影响MEMS陀螺仪使用精度的因数主要由以下几方面构成:刻度因子、失准角、零偏、随机漂移等。但是对于低成本、低精

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