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Shimmy damping device for spaceflight imaging load shutter

A swing reducing device and load technology, which is applied in the direction of shutters, electromechanical devices, casings/covers/supports, etc., can solve problems such as spring damping fatigue and vibration excitation, achieve long working life, improve service life, and reduce invalid rotation The effect of times

Active Publication Date: 2014-10-01
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Spring damping is prone to fatigue and excitation, and the rubber material used in rubber damping is also limited in aerospace applications

Method used

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  • Shimmy damping device for spaceflight imaging load shutter
  • Shimmy damping device for spaceflight imaging load shutter
  • Shimmy damping device for spaceflight imaging load shutter

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] like figure 1 As shown, it can be seen from the three-dimensional exploded view of the shutter swing reduction device that the device mainly includes the rear end cover 1, the N pole samarium cobalt permanent magnets 3, 14, 15 and 16, the aluminum alloy swing reduction plate 4, and the S pole Samarium cobalt permanent magnets 6, 17, 18 and 19. Limited rotation angle torque motor 8 and shutter 13.

[0021] Combine below figure 1 , figure 2 and image 3 Further explaining the shutter sway reduction device of the present invention: the rear end cover 1 has an outer diameter of 40mm, a thickness of 10mm, and is made of TC4 titanium alloy. There are two Φ3.4 through holes on the edge for connecting with the motor 8 . There are 4 fan-shaped grooves in the rear end cover 1, the outer and inner diameters are 35m and 25mm respectively, the ...

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PUM

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Abstract

The invention discloses a shimmy damping device for a spaceflight imaging load shutter. The shimmy damping device comprises four fan-shaped N pole samarium cobalt permanent magnets, a rear end cover, an aluminum alloy shimmy damping piece, four fan-shaped S pole samarium cobalt permanent magnets and a limited angle torque motor. When the limited angle torque motor is electrified and rotates, the aluminum alloy shimmy damping piece begins rotating and generates inducing eddy currents when passing through the gap between the two pairs of fan-shaped permanent magnets different in magnetism, and therefore the aluminum alloy shimmy damping piece generates damping force. The higher the rotation speed of the motor is, the faster the change of the magnetic flux of the aluminum alloy shimmy damping piece is, the larger the generated inducing eddy currents are, and the larger the generated damping force is. The shimmy damping device can effectively restrain the over-swinging and impacting phenomena in the rotation process of the shutter and effectively prolong the service life of a spaceflight imaging load shutter assembly.

Description

technical field [0001] The invention relates to a shutter swing reduction device, in particular to a shutter assembly applied to aerospace imaging payloads. Background technique [0002] The shutter component is a key component of many aerospace imaging payloads, and its performance degradation or failure will lead to the failure of the visible light and near-infrared channels. Therefore, it is a key link for the long life and high reliability of aerospace imaging payloads. Since the shutter in the shutter assembly will produce overswing and impact phenomena during the swing process, the motor bearing will produce invalid rotation and impact, thus shortening the working life of the shutter assembly. In order to avoid the failure of the whole machine, it is very important to ensure that its working life and safety meet the requirements. [0003] Shutter assemblies with moving parts often require damping devices to protect parts of the assembly from damaging impacts to prolon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/04H02K5/04G03B9/08
Inventor 徐增闯于远航刘石神崔维鑫韩开亮董栋王钊孙浩
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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