Single-freedom-of-degree active and passive vibration isolation device

An active vibration isolation, active and passive technology, applied in the direction of shock absorbers, shock absorbers, mechanical equipment, etc., can solve the problems of attenuating low-frequency interference, high natural frequency of the structure, and large rigidity of piezoelectric ceramics, so as to reduce the stroke clearance, The effect of suppressing micro-vibration low-frequency interference and isolating low-frequency vibration

Active Publication Date: 2017-05-17
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

However, the high rigidity of piezoelectric ceramics will lead to high natural frequencies of the structure, making it difficult to effectively attenuate low-frequency interference

Method used

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  • Single-freedom-of-degree active and passive vibration isolation device
  • Single-freedom-of-degree active and passive vibration isolation device
  • Single-freedom-of-degree active and passive vibration isolation device

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0020] figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; wherein the lower end of the lower curved leaf spring 11a is connected to the foundation platform 10 through countersunk screws, and the upper end of the lower curved leaf spring 11a is connected to the lower end of the corrugated shielding tube 15 . The lower end of the upper curved leaf spri...

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Abstract

The invention discloses a single-freedom-of-degree active and passive vibration isolation device. The single-freedom-of-degree active and passive vibration isolation device comprises a foundation platform, a lower bending flat spring, a corrugated shielding pipe, an upper bending flat spring and a loading platform which are sequentially connected from bottom to top. A passive vibration isolation unit is formed by the lower bending flat spring and the upper bending flat spring, and an active vibration isolation unit is arranged in the corrugated shielding pipe. By means of combined use of an active control unit and the passive vibration isolation unit, the single-freedom-of-degree active and passive vibration isolation device has a good high-attenuation-rate vibration isolation effect on high-frequency vibration interference and can effectively realize low-frequency resonant suppression, low-frequency vibration is isolated, a micro-vibration environment can be effectively suppressed, and a stable work environment is provided for remote sensing satellite high-resolution observation imaging and other devices.

Description

technical field [0001] The invention belongs to the field of micro-vibration active isolation and suppression, and more specifically relates to a single-degree-of-freedom active and passive vibration isolation device. Background technique [0002] Traditional passive vibration isolators are composed of mass-spring-damping elements. Due to the inherent contradiction between the transmission rate of low-frequency vibration and the attenuation rate of high-frequency vibration, they cannot meet the vibration isolation requirements of precise micro-vibration. Therefore, some New technologies, new means to improve this situation. For example, during the satellite’s in-orbit operation, the normal operation of the equipped equipment will cause the overall and local reciprocating motion of the satellite with a small amplitude. These micro-vibrations are the main factors affecting key performances such as pointing accuracy and imaging quality of high-precision remote sensing satellite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F7/104
CPCF16F7/104
Inventor 陈学东王敏李小清
Owner HUAZHONG UNIV OF SCI & TECH
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