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长期贮存条件下平台惯导系统壳体效应具有与使用状态不同的漂移特性,其漂移规律与各性能参数退化及其相互耦合特性相关,在工程应用中往往难以分析贮存条件下壳体效应稳定性水平和合理配置标定维护资源。本文通过全面分析伺服电路零位和框架轴上干扰力矩引起壳体效应漂移的原理及其漂移表达式,在此基础上深入挖掘了表达式中漂移参数的变化特性,综合给出了伺服电路零位和框架轴上干扰力矩引起壳体效应漂移的变化行为模型,并结合实际贮存环境剖面对其进行了长期漂移特性、加速特性和稳定性分析,分析表明在现有贮存条件下,伺服电路零位和框架轴上干扰力矩引起的壳体效应在X、Y和Z轴的长期漂移特性相近,与实际使用状态的响应特性不同,且无加速特性,具有较好的稳定性水平,从而为合理安排标定维护资源提供了依据。
Under long term storage conditions, the shell effect of the platform inertial navigation system has different drifting characteristics from its usage state. The drift law is related to the degradation of each performance parameter and its mutual coupling characteristics. It is often difficult to analyze the stability of shell effect under storage conditions in engineering applications Level and rationally configure calibration maintenance resources. In this paper, by analyzing the principle and drift expression of shell effect drifts caused by the zero of servo system and the interference moment of frame axis, the variation characteristics of drift parameters in the expressions are deeply tapped, and the zero Bit and frame-axis interference torque caused by the shell effect drift drift behavior model, combined with the actual storage environment profile of its long-term drift characteristics, acceleration characteristics and stability analysis shows that under the existing storage conditions, the servo circuit zero The shell effect caused by the disturbance torque on frame and frame axis is similar to the long-term drift characteristics of X, Y and Z axes, and has different response characteristics to the actual use state, and has no acceleration characteristic and good stability level, so it is reasonable Provide a basis for calibration maintenance resources.