惯性平台系统石英加速度计温度建模补偿技术  

Research on Temperature Modeling and Compensation Technique of Quartz Accelerometer in Inertial Platform System

作　　者：张金云 姜欢[1,2] 赵军虎 刘凯 王汀[1,2] ZHANG Jin-yun;JIANG Huan;ZHAO Jun-hu;LIU Kai;WANG Ting(Laboratory of Science and Technology on Ultra-precision Aerospace Control Instrument,Beijing,100039;Beijing Institute of Aerospace Control Devices,Beijing 100039)

机构地区：[1]超精密航天控制仪器技术实验室,北京100039 [2]北京航天控制仪器研究所,北京100039

出　　处：《导航与控制》2021年第3期66-73,共8页Navigation and Control

摘　　要：惯性平台系统中的石英加速度计输出随温度变化显著,其温度漂移特性会影响惯性平台系统自对准的精度水平。为实现惯性平台系统在内部温度场变化时的快速高精度自对准,开展了惯性平台系统石英加速度计温度建模补偿技术研究。惯性平台系统上电后内部温度场变化显著,而石英加速度计作为关键惯性仪表,其温度漂移直接影响惯性平台系统的自对准精度。针对石英加速度计温度漂移特性进行温度建模补偿,通过多项式样条函数回归方法辨识出石英加速度计温度模型参数,温度补偿后在惯性平台通电升温过程中进行自对准验证。验证结果表明,对惯性平台系统石英加速度计进行温度建模补偿,可以满足惯性平台系统在最短通电时间内完成高精度自对准的使用要求。The output of quartz accelerometer in inertial platform system changes significantly with temperature, and its temperature drift of quartz accelerometer could affect the self-alignment accuracy of inertial platform system. In order to realize the quickly and high-precision self-alignment of inertial platform system as the internal temperature field changes, a research on temperature modeling and compensation technique of quartz accelerometer in inertial platform system is conducted. After the inertial platform system is powered on, the internal temperature field changes significantly. As a key inertial instrument, the temperature drift of quartz accelerometer directly affects the self-alignment accuracy of inertial platform system. For quartz accelerometer temperature drift characteristic, temperature modeling and compensation is performed. The temperature model parameters of quartz accelerometer are identified by polynomial spline function progressive. Besides, self-alignment verification is carried out after the temperature compensation in the course of the powered and warming of inertial platform system. The verification results show that the temperature modeling and compensation of quartz accelerometer in inertial platform system could satisfy the operating requirements of high-precision self-alignment of inertial platform system in the shortest power on time.

关 键 词：惯性平台 石英加速度计 温度建模补偿 多项式样条函数回归 

分 类 号：U666.1[交通运输工程—船舶及航道工程]