Tuned Mass Dampers for Storage Device Test Slots
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Solution Overview
Problem
Current storage device testing systems experience excessive vibrations due to structural support and external sources, leading to unreliable test results and increased manufacturing costs, particularly affecting newer disk drives with higher capacities and faster rotational speeds.
Innovation Solution
Incorporating tuned mass dampers into storage device test slots, which include a cantilever beam, a weight, and energy-absorbing materials to attenuate specific vibration frequencies, thereby reducing the transmission of vibrations through the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If structural support systems are used in storage device testing systems, then stability and support are improved, but vibrations are increased
Solution Approach 1:
A rubber pad is introduced as an intermediary element between the structural support system and the storage device. This rubber pad acts as a mediator that allows the structural support to maintain stability while filtering out and reducing vibrations, thus resolving the contradiction between structural stability and vibration reduction.
Solution Approach 2:
The physical properties of the support interface are changed by introducing a rubber pad with specific viscoelastic properties. This changes the dynamic characteristics of the support system, allowing it to maintain structural stability while reducing vibration transmission through material parameter modification.
2Productivity
If automation systems are used in storage device testing, then testing efficiency is improved, but vibrations are increased
Solution Approach 1:
The rubber pad serves as a mediator between the automated testing system components and the storage device. It allows the automation system to operate efficiently while the rubber pad absorbs and reduces vibrations generated during automated handling and testing operations.
3Ease of operation
If storage devices are placed in carriers for loading and unloading, then ease of operation is improved, but vibrations are increased
Solution Approach 1:
The rubber pad is positioned between the carrier and the storage device, acting as a vibration-isolating intermediary. This allows the carrier to easily load and unload storage devices while the rubber pad reduces vibrations transmitted during these operations, protecting the storage device from vibration-related damage.
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 addition of tuned mass dampers significantly reduces vibrations at predetermined frequencies, improving the reliability of test results and reducing manufacturing costs by minimizing vibration-related errors such as bump errors and non-repetitive run-out.
Implementation Method 1
The one or more tuned mass dampers are configured to inhibit vibration of the housing at one or more predetermined frequencies
Implementation Method 2
a layer of energy absorbing material disposed between the beam and the weight
Implementation Method 3
The energy absorbing material includes an elastomer, a viscoelastic adhesive, and/or a viscous liquid
Data Source
AI summary
A storage device test slot includes a housing. The housing defines a test compartment for receiving a storage device for testing. One or more tuned mass dampers are connected to the housing. The one or more tuned mass dampers are configured to inhibit vibration of the housing at one or more predetermined frequencies.