Satellite Antenna Anti-Vibration Unit Design
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Solution Overview
Problem
Conventional satellite antennas have limited vibration and shock absorption capacity due to the use of a single spring, which can lead to malfunction when subjected to external movements or environmental shocks.
Innovation Solution
An anti-vibration unit is integrated within the posts supporting the signal transmitting and receiving unit, utilizing a plurality of damper springs with different physical constants and an elastic member to prevent direct contact between spring windings, allowing for effective absorption of vibrations and shocks in multiple directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single spring is used to attenuate vibrations or shocks, then the structure is simple, but the vibration or shock absorbing capacity is not large
Solution Approach 1:
The single spring is divided into multiple springs (first spring and second spring) arranged in parallel within the post. This segmentation increases the vibration and shock absorbing capacity while maintaining a compact structure, as each spring contributes to the overall damping performance.
Solution Approach 2:
Multiple springs are combined within the same post space to achieve enhanced vibration and shock absorbing capacity. The first spring and second spring work together in parallel to provide superior damping performance compared to a single spring configuration.
2Volume of moving object
If the spring is compressed to the maximum, then the space is efficiently utilized, but the shocks and vibrations will not be absorbed at all and are transmitted to the electronic components
Solution Approach 1:
The compression force is distributed across multiple springs (first spring and second spring) rather than concentrating it on a single spring. This segmentation allows each spring to operate within its optimal compression range, preventing complete coil contact while maintaining effective space utilization.
Solution Approach 2:
The springs are designed with different physical constants (different stiffness values). This parameter variation allows the springs to share the compression load differently, ensuring that neither spring reaches maximum compression with coil contact, thereby maintaining both space efficiency and shock absorption capability.
3Reliability
If multiple damper springs are used to increase shock absorption capacity, then the vibration absorption improves, but the device complexity increases
Solution Approach 1:
Multiple springs are nested within the same post, with the first spring and second spring arranged concentrically or in close proximity. This nesting approach increases shock absorption capacity while minimizing the increase in external dimensions and structural complexity.
Solution Approach 2:
The first spring and second spring are combined within the same mounting structure and post, sharing common support elements. This merging approach achieves enhanced vibration absorption while avoiding the need for separate mounting structures for each spring.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances the vibration and shock absorption capacity, preventing antenna malfunction by distributing forces across multiple springs and preventing direct contact, thus ensuring the antenna remains functional even under varying environmental conditions.
Implementation Method 1
a plurality of damper springs provided on the outer surface of the damper shaft along the longitudinal direction of the damper shaft
Implementation Method 2
The anti-vibration unit is capable of extending the range of the shock absorption by using a plurality of damper springs
Implementation Method 3
an elastic member provided between the windings of the damper spring
Data Source
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AI summary
The invention relates to an antenna for satellite communication, the antenna a signal transmitting and receiving unit for receiving or transmitting a signal from/to the satellite; a driving unit for rotating the signal transmitting and receiving unit so as to enable the signal transmitting and receiving unit to track the satellite; an anti-vibration unit provided inside the posts for elastically supporting the signal transmitting and receiving unit or the driving unit. Therefore, by providing the anti-vibration unit inside the posts as described above, it is possible to increase availability for a circumferential space of the posts and to simplify the structure of the anti-vibration unit.