现代制造工程 ›› 2018, Vol. 452 ›› Issue (5): 125-132.doi: 10.16731/j.cnki.1671-3133.2018.05.023

• 仪器仪表/检测/监控 • 上一篇    下一篇

一种惯性稳定平台分体式POS安装方案设计与优化

朱军1,2, 周向阳1,2   

  1. 1 北京航空航天大学惯性技术重点实验室新型惯性仪表与导航系统技术国防重点学科实验室,北京 100191;
    2 北京航空航天大学仪器科学与光电工程学院,北京 100191
  • 收稿日期:2016-11-26 出版日期:2018-05-18 发布日期:2018-07-20
  • 通讯作者: 周向阳,通信作者,研究员。E-mail:zhujunz@buaa.edu.cn
  • 作者简介:朱军,硕士研究生,研究方向为航空遥感惯性稳定平台。
  • 基金资助:
    国家自然科学基金项目(51375036,51205019)

A split-type POS installation scheme and optimization for aerial inertial stabilization platform

Zhu Jun1,2, Zhou Xiangyang1,2   

  1. 1 Science and Technology on Inertial Laboratory,Fundamental Science on Novel Inertial Instrument & Navigation System Technology Laboratory,Beihang University,Beijing 100191,China;
    2 School of Instrumentation Science & Opto-electronics Engineering,Beihang University,Beijing 100191,China
  • Received:2016-11-26 Online:2018-05-18 Published:2018-07-20

摘要: 根据某型光谱成像仪的结构特点,提出一种航空遥感惯性稳定平台分体式POS安装方案,并对支架进行多目标优化设计。安装方案包括整体布局、POS安装方案、配重方案及支架优化4个部分。首先,根据载荷、POS及稳定平台结构特点和功能确定最优布局方案,在稳定平台方位框上对称分体式安装POS/支架系统、配重/支架系统,使得当载荷沿方位轴转动到任意位置情况下,对水平横滚轴及俯仰轴的偏心力矩都能相互抵消;其次,为减小安装空间,将POS通过支架在方位框过渡盘上垂直安装;第三,根据载荷安装位置,确定将配重/支架系统与POS/支架系统沿俯仰轴对称安装,将配重块重心集成设计并进行最大距离安置,使得在配重最小情况下实现对POS的最大偏置校正力矩;第四,以质量、应力及应变最小为目标,对安装支架进行基于ANSYS Workbench仿真环境的拓扑优化和多目标参数优化设计,使得在保证强度和刚度的条件下质量减少了26.7 %;最后,以优化设计方案为指导,对POS安装及配重系统进行加工配重和飞行实验。实验结果表明:基于POS位置反馈的惯性稳定平台控制系统性能稳定,实现了光谱仪高精度航空遥感成像。

关键词: 惯性稳定平台, 位置姿态测量系统, 偏心力矩, 拓扑优化, 多目标优化

Abstract: On the basis of the structural characteristic of a Hyper Spectral Imager (HSI),a split-type POS installation scheme used for a three-axis Inertially Stabilized Platform (ISP) is proposed and the mounting bracket is then optimized based on multi-objectives.The POS installation scheme is composed of four parts which are overall layout,POS installation plan,mass balance plan and mounting bracket optimization,respectively.Firstly,optimized overall layout is determined according to the structural characteristics of the load,POS and ISP,namely,POS/holder and counterweight/holder are symmetrically installed on the ISP azimuth gimbal to offset the eccentric torque to roll and pitch axes whatever the imaging sensor is rotated to any position along azimuth axis.Secondly,to decrease the installation space,the POS is designed to install vertically on the top surface of azimuth gimbal.Thirdly,the counterweight is placed on the outer edge to produce the biggest moment while minimizing the mass.Fourthly,the multi-objectives optimization of mounting bracket based on the ANSYS Workbench simulation environment is carried out,resulting in mass decreased by 26.7 % under the condition of maintaining the strength and stiffness.Finally,based on the proposed scheme and optimized results,a three-axis ISP achieves high control accuracy which further helps the success of high-accuracy imaging of a HSI in the aerial remote sensing experiments.

Key words: Inertially Stabilized Platform(ISP), Position and Orientation System(POS), eccentric moment, topology optimization, muti-objectives optimization

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