静电陀螺转子偏心摆动造成的静电干扰力矩  

Electrostatic torques coming of the rotor's off-center spinning in ESG

作　　者：郭晋峰[1] 糜长军[1] 田蔚风[1] 金志华[1] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《哈尔滨工程大学学报》2007年第6期673-676,共4页Journal of Harbin Engineering University

基　　金：国防科学技术工业委员会基础研究基金资助项目(51409030101JW03)

摘　　要：针对质量不平衡调制(MUM)信号读取静电陀螺仪中转子径向偏摆运动引入的静电干扰力矩,推导了该干扰力矩的表达式,进行了计算和仿真,并讨论了其对陀螺精确度的影响.研究结果表明,转子径向偏摆运动造成的静电力矩是电极电位和转子自转轴相对壳体角位置的函数,在高精确度应用中,陀螺必须工作在该静电干扰力矩为零的位置.研究结果对MUM读取静电陀螺仪有参考价值,对光电读取静电陀螺仪也有借鉴作用.In an ESG （electrostatically suspended gyroscope） that adopts the MUM （mass-unbalanced modulation） reading scheme, an off-center axis of rotation of the rotor induces electrostatic disturbing torques. Applying the energy method, this paper derives a formula for this torque, then shows results of calculations and simulations. On this basis, it discusses the influence of an off-center axis on the precision of gyroscopes. The results indicate that electrostatic torques are a function of the electric potentials on the electrodes and the location of the rotor＇s axis of rotation with respect to the gyro case. In high precision applications it is necessary for the gyroscope＇s rotor to be at the zero-torque location. The results are valuable for MUM reading ESGs as well as those that are optical reading.

关 键 词：静电陀螺仪 质量不平衡调制读取 静电干扰力矩 

分 类 号：U666.12[交通运输工程—船舶及航道工程]