An active and passive integrated vibration isolation device and vibration isolation platform

A vibration isolation platform, active and passive technology, applied in the field of vibration reduction, can solve the problems of occupying the effective weight and space of the aircraft, the complexity of the system, and the difficulty of taking advantage of the vibration reduction advantages of the constrained damping layer.

CN105129112BActive Publication Date: 2017-04-12SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-04-12

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Abstract

The invention discloses an active and passive integrated vibration isolation device and a vibration isolation platform. The vibration isolation device comprises an elastic plane net structure, an active electromagnetic dynamic vibration absorber, and a piezoelectric stack actuator. The elastic plane net structure is formed by weaving steel wires in a tensioning and crossed manner. The active electromagnetic dynamic vibration absorber is arranged on the intersection of a central region of the elastic plane net structure. The piezoelectric stack actuator is arranged on the edge position of the elastic plane net structure. The vibration isolation platform comprises the vibration isolation device, a bearing cylinder, an intermediate support, and a control system. A satellite attitude control device assembly is arranged on the intermediate support. The intermediate support is installed on the vibration isolation device. The vibration isolation device is installed on the inner side of the bearing cylinder. The control system is used to control the active electromagnetic dynamic vibration absorber according to vibration acceleration information of the intermediate support, and control the piezoelectric stack actuator according to the vibration acceleration information of the bearing cylinder. The vibration isolation device and the vibration isolation platform are effective for low-frequency line spectrum, and have good control effect on broadband random excitation.
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Description

technical field

[0001] The invention relates to the field of vibration reduction, in particular to an active and passive integrated vibration isolation device and vibration isolation platform for on-orbit micro-vibration control of satellite attitude control equipment. Background technique

[0002] With the establishment of a large number of civil or military satellite projects such as surveying and mapping, reconnaissance, deep space reconnaissance, astronomical observation, and laser communication, these projects have continuously upgraded the requirements for satellite pointing stability and observation resolution. Satellite attitude oscillation, on-board gyration or reciprocating parts' micro-vibration interference to the satellite platform is gradually becoming a bottleneck restricting the use of highly sensitive payloads. For precision instruments and equipment working in the space environment, excessive vibration interference will affect their normal performance. For ...

Examples

Embodiment Construction

[0061] The technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the accompanying drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all examples. Based on the present invention All other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0062] The structure diagram of an active and passive integrated vibration isolation device and vibration isolation platform in this embodiment is as follows figure 1 As shown, it is mainly used for on-orbit micro-vibration control of a satellite attitude control device assembly 1, which can be a momentum wheel, a flywheel or a control moment gyroscope.

[0063] Wherein, the vibration isolation device includes an elastic planar mesh structure 4, an active electromagnetic dynamic sh...