摘 要

为解决高光谱图像中存在的纵向条纹缺陷的问题,确定了成像器的装夹应该能够绕Z轴旋转90°。又通过实验发现，在高光谱成像器内部推扫和外部推扫之间存在光轴偏差，所以确定了成像器的装夹应该能够绕Y轴摆动的需求。

因此，为了满足成像器能解决条纹缺陷问题的需求，设计科研类光谱成像夹持机构，来实现既能在Y轴内摆动，又能在Z轴上旋转的功能。为满足内部扫描和外部扫描光轴一致的需求，设计检测类光谱成像夹持机构，只要求能实现在Y轴上摆动的功能。根据两套光谱成像系统的尺寸、重量设计了一架多用的夹持装置。通过更换不同的底板，来实现同一支架对不同成像器的装夹。通过对摆角调节盘的设计，来实现角度的调整。通过对摆角调节盘顶部凹槽的设计，来实现成像系统的固定。

通过对专用夹具的设计表明，高光谱成像系统在科研类夹持机构的使用中满足鉴别条纹缺陷的需求。对调整内外成像时光轴角度的需求可以通过设计专用机械夹具来实现。并且，如果仅仅为检测需求而进行内部和外部扫描光谱成像时，也可以通过检测类专用夹具来满足。

关键词： 光轴偏差； 条纹缺陷； 科研夹持机构；检测夹持机构；

Design of adjustable holding mechanism for high spectral imager

ABSTRACT

In order to solve the problem of longitudinal fringe defects in hyperspectral images, it is determined that the clamp of the imager should be able to rotate 90 degrees around the Z axis. It is also found through experiments that there is optical axis deviation between internal and external push-broom of hyper spectral imager, so it is determined that the clamp of the imager should be able to swing around the Y-axis.

Therefore, in order to satisfy the requirement that the imaging device can solve the fringe defect problem, a scientific spectral imaging clamping mechanism is designed to realize the function of swinging in the Y axis and rotating in the Z axis. In order to satisfy the requirement of consistency between internal and external scanning optical axes, a clamping mechanism for detecting spectral imaging is designed. Only the swing function on Y axis is required. According to the size and weight of two sets of spectral imaging systems, a multi-purpose clamping device is designed. By replacing different backboards, the same bracket can clamp different imaging devices. Through the design of the swing angle adjusting plate, the angle adjustment can be realized. Through the design of the groove on the top of the swing angle adjusting disc, the fixing of the imaging system is realized.

The design of special fixture shows that the hyper spectral imaging system meets the need of identifying stripe defects in the use of scientific research clamping institutions. The requirement of adjusting the angle of optical axis of internal and external imaging can be realized by designing special mechanical fixture. Moreover, if the internal and external scanning spectral imaging is performed only for the detection needs, it can also be satisfied by the special fixture of the detection class.

Key words: optical axis deviation; stripe defect; scientific research clamping mechanism; detection clamping mechanism;

目 录

1绪论………………………………………………………………………………………………………1

1.1 研究背景……………………………………………………………………………………………1

1.2 研究内容与技术路线…………………………………………………………………………2

2高光谱成像器位姿调节技术要求………………………………………………………………………4

2.1高光谱成像器成像原理……………………………………………………………………………4

2.2高光谱成像器性能特点……………………………………………………………………………5

2.2.1高光谱成像器成像测试………………………………………………………………………5

2.3位姿调节技术要求…………………………………………………………………………………6

2.3.1绕Y轴摆动·······························································································6

2.3.2绕Z轴旋转……………………………………………………………………………………6

2.3.3可扩展性与兼容性……………………………………………………………………………6

3夹持机构设计···········································································································8

3.1科研类夹持机构··································································································8

3.1.1方案设计···································································································10

3.1.2 详细设计..................................................................................................................................13

3.2检验类夹持机构………………………………………………………………………….......…........18

3.2.1方案设计………………………………………………………………………………….18 3.2.2 详细设计……………………………………………………………………………..............20

4 基于ANSYS下的静应力分析………………………………………………………………………..…24

4.1科研类夹持机构的网格划分及求解…………………………………………………...………........24

4.2检测类夹持机构的网格划分及求解…………………………………………………....……….......25

结论……………… ………………………………………………………………………………………29

致谢 ………………………………………………………………………………………………………30

参考文献………………………………………………………………………….………………...............31

附1旋转摆动式夹持机构装配图……………………………………….………………...................34附2 底板零件图……………………………………………………….……………….........................35

附3 可调节侧杆零件图…………………………………………………….………………...............36

附4 角度调节盘零件图…………………………………………………….………………...............37

附5 填块零件图………………………………………………………….………………....................38

附6 辅助支撑板零件图…………………………………………………….………………...............39

附7燕尾槽零件图…………………………………………………….……………….........................40