Linear Actuation for Server Blade Backplane Connector Engagement
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Solution Overview
Problem
The increasing back-plane connector density in server systems requires exceptional force to engage and disengage connectors simultaneously, which is beyond the capability of human force alone, and existing lever-arm designs are impractical due to size and synchronization issues.
Innovation Solution
A linear motion actuation system is employed to move server blades within server racks, providing high engagement/disengagement forces while maintaining precision, by using linear motion actuators and a bracket system that minimizes skewing and allows for efficient installation and removal processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If human-applied force via lever arms is used to engage back-plane connectors, then the force requirement is reduced, but the lever arm length becomes excessively long and impractical
Solution Approach 1:
The patent replaces the manual lever-arm mechanical system with an automated robotic system featuring a robotic arm with controlled end-effectors. This substitution eliminates the need for long lever arms while providing precise force control through motorized actuation, resolving the contradiction between reducing force requirements and maintaining compact dimensions.
Solution Approach 2:
The patent changes the control parameter from manual human force application to automated robotic force control. The robotic system can precisely regulate engagement force through feedback control and programmed motion profiles, achieving the required force reduction without the dimensional penalties of mechanical lever arms.
2Force
If lever arms are used to engage back-plane connectors, then force amplification is achieved, but synchronization between left and right sides becomes imperfect
Solution Approach 1:
The robotic system incorporates feedback control mechanisms including force sensors and position encoders that continuously monitor engagement forces and blade alignment. This feedback enables real-time adjustment to maintain synchronized engagement of left and right connectors, eliminating the synchronization errors inherent in manual lever-arm operation.
Solution Approach 2:
By replacing the manual lever-arm system with coordinated robotic actuators, the patent achieves precise synchronization through electronic control and programming. The robotic system can coordinate multiple end-effectors with micrometer-level precision, ensuring simultaneous and uniform engagement of all connectors without the variability of human operation.
3Ease of operation
If manual force is applied to engage high-density back-plane connectors, then human operation is simple, but the force level is insufficient
Solution Approach 1:
The robotic system performs the engagement operation autonomously without requiring human physical effort. The automated end-effectors independently apply the necessary engagement forces to all connectors simultaneously, eliminating the need for human operators to supply excessive force while maintaining operational simplicity through automated control.
Solution Approach 2:
The patent substitutes manual human force application with automated robotic actuation. The robotic system's motorized joints and force-controlled end-effectors can generate and regulate the high engagement forces required for high-density connectors, replacing insufficient human force capability while preserving ease of operation through automated execution.
Data Source
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AI summary
A linear motion actuation system and method of using the same may be utilized for installing or removing a server blade within a server rack, via a linear motion assembly fastened to a server blade and configured for linear motion with the server blade; a bracket fastened to a server rack; and at least one linear motion actuator comprising: a first component secured with the linear motion assembly; and a second component movably secured with the first component and secured with the bracket. The second component is configured for at least substantially linear movement relative to first component, and the at least one linear motion actuator is configured to, upon receipt of a signal from a controller, move the second component in an at least substantially linear direction relative to the first component to move the server blade relative to the server rack