摘要
针对高精度光电导引系统快速隔离扰动、稳定视轴的要求,设计了以速率陀螺为核心构成的三轴陀螺稳定平台。结合某型号电视导引头设计过程,详细介绍了该三轴陀螺稳定平台的结构组成、主要元器件选型,以及软硬件实现。分析了陀螺稳定平台的隔离扰动原理,设计了多闭环复合控制结构,给出了系统各组成部分的模型,合理简化后建立了系统数学模型,并按照频域分析法设计了控制算法。对于陀螺信号噪声问题,设计了小波阈值滤波方法,有效地消除了反馈信号的噪声,提高了系统控制精度。整机测试表明,该陀螺稳定平台满足了导引头系统设计指标要求,具有较高的跟踪精度;能够在实验室条件下,进行多种电视跟踪模拟实验,为实际设备的研制提供了真实有效的数据。
In view of the requirements of isolating disturbances and stabilizing optical axis of high-precision photoelectric guidance system, a three-axis stabilized platform system centering on the rate gyro was designed. Based on the design process of a TV guidance header, the mechanical structure constitution, main components selection and software and hardware realization were introduced. The disturbance-isolation theory of the stabilized platform was analyzed and the control structure including multiple closed-loops was designed. Each part of the control system was modeled, and then by simplifying their equations, the whole system model was founded and the control method was designed according to the frequency domain analysis method. To eliminate the gyro＇s noise signal, a wavelet threshold filter was proposed, which can depress the feedback noise signal effectively and improve the control precision. The testing results on the equipment show that the gyro stabilized platform system meets the presetting performance demands and has higher tracking precision. Many kinds of TV tracking simulation experiments can be implemented in the laboratory, and this provides real and effective data for the development of practical equipments.
出处
《中国惯性技术学报》
EI
CSCD
2007年第2期171-176,共6页
Journal of Chinese Inertial Technology
