八电极静电陀螺仪的非线性建模及控制参数优化  

Nonlinear modeling and control parameter optimization of eight-electrode electro-statically suspended gyroscope

作　　者：张克志[1] 颜诗源[2] 田蔚风[1] 金志华[1] 钱峰[1] 

机构地区：[1]上海交通大学仪器科学与工程系,上海200240 [2]第二炮兵工程学院,西安710025

出　　处：《中国惯性技术学报》2008年第4期484-487,492,共5页Journal of Chinese Inertial Technology

基　　金：“十一五”国防预研项目(51309050201)

摘　　要：考虑扰动作用下转子相对于电极腔中心可能存在较大范围运动,建立了八电极结构静电陀螺仪四轴斜坐标系下三阶转子-电极电容模型,同时结合转子在电场力和重力作用下的动力学模型,实现具有非线性特征的静电支承控制模型。在此基础上探讨了转子偏离电极腔中心时加力控制信号对位移测量信号的影响,并建立了基于抵消机制的位移测量模型。另外采用Simulink Response Optimization工具箱优化了控制器参数。离线仿真实验表明,设计的支承控制器在转子较大偏离电极中心时,仍能确保转子的定中性。For larger rotor displacement from cavity center in the presence of disturbance, a three-order capacitance model and rotor dynamic model in the frame of four-axis coordinate were built, which features the nonlinearity. Also, the effect of controlling current on the displacement measurement was discussed, and a model based on eliminating mechanism was provided in the scheme. In addition, Simulink response optimization toolbox was utilized to tune the controller parameters for optimization control. Off-line simulation results show that the proposed electro-suspended controlling scheme can guarantee the rotor＇s centering characteristic in the presence of uncertain disturbance.

关 键 词：静电陀螺仪 静电支承控制 非线性建模 参数优化 

分 类 号：U666.1[交通运输工程—船舶及航道工程]