摘要
在惯性器件的离心-气压复合校准中,气压箱的结构设计决定了传感器的校准精度。而现有的气压箱结构无法满足高离心加速度下的使用要求,因此提出了一种可抗高离心加速度的气压箱结构,以实现高离心加速度下惯性器件的复合校准。为了解决在高离心加速度下气压箱气体泄露问题,通过设计气压箱的结构材料和密封技术研制了一种高密封低气压的实验箱,进而对其箱体强度进行校核计算,得到各个部分的最大受力强度。根据所得数据进行数值仿真,分析在不同离心加速度下的箱内气压分布情况,并在高离心加速度条件下进行了不同气压的试验测试,证明所设计的气压箱在高离心加速度环境下仍能保证系统内部气压的稳定性。因此该气压箱能够用于离心-气压复合校准装置中,实现对惯性器件的高精度复合校准。
In the centrifugal-pneumatic compound calibration of inertial sensors,the structure design of pressure chamber is the key factor which influences the calibration accuracy of the inertial sensors.As the current pressure chamber structure can not meet the requirements of high centrifugal acceleration,a new pressure chamber is proposed which can resist high centrifugal acceleration to achieve the compound calibration of inertial sensors under high centrifugal acceleration.In order to solve the air leakage problem of the pressure chamber under high centrifugal acceleration,a high sealing and low pressure chamber is developed through the structural materials and sealing technology design.Then the chamber strength is analyzed and calculated to obtain the maximum stress strength of each part.According to the obtained data,numerical simulation is carried out to analyze the air pressure distribution in the chamber under different centrifugal acceleration.Furthermore,experimental test is conducted to verify that the proposed pressure chamber can guarantee the internal pressure stability under high centrifugal acceleration.Therefore,the proposed pressure chamber can be applied to the centrifugal-pneumatic compound calibration device to realize the high-precision compound calibration of the inertial sensors.
作者
董雪明
王敏林
秦朝俊
杜美林
DONG Xueming;WANG Minlin;QIN Chaojun;DU Meilin(Changcheng Institute of Metrology&Measurement,Beijing 100095,China)
出处
《传感技术学报》
CAS
CSCD
北大核心
2023年第9期1359-1367,共9页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金项目(62103389)。
关键词
气压设备
高密封低气压箱
数值仿真
离心-气压复合校准装置
高离心加速度
密封技术
air pressure device
high sealing and low pressure chamber
numerical simulation
centrifugal-pneumatic compound calibration device
high centrifugal acceleration
sealing technology
作者简介
董雪明(1968-),男,硕士,研究员,主要从事单一标准物理场、特殊物理场以及多物理场复合下惯性校准技术研究,dxm304@163.com;王敏林(1988-),男,博士,高级工程师,主要从事伺服系统控制,控制理论与应用,惯性器件测试与校准技术研究,512756796@qq.com。
