Fan Speed Control for Hard Disk Vibration and Thermal Balance

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Solution Overview

Problem

As server performance improves, increased power consumption leads to heat accumulation, necessitating faster fan speeds for heat dissipation, which causes vibration and noise, affecting hard disk performance.

Innovation Solution

A method to identify a target fan causing storage read-write performance degradation and adjust its rotation speed to meet temperature and performance benchmarks, optimizing fan configuration to enhance hard disk performance and reduce vibration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If fan rotation speed is quickly increased to dissipate heat, then heat dissipation performance is improved, but vibration and noise increase, affecting hard disk read-write performance

Engineering Contradiction:
Improveheat dissipation performanceVSAvoidvibration and noise
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

The patent implements dynamic fan speed control based on real-time temperature monitoring. The fan rotation speed is adjusted dynamically according to the temperature of different components (CPU, GPU, hard disk), allowing the system to adaptively balance heat dissipation needs with vibration and noise control, rather than using fixed high-speed operation

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies different fan speed control strategies to different components based on their individual temperature characteristics. Each component (CPU, GPU, hard disk) has its own temperature monitoring and control policy, allowing localized optimization that prevents excessive vibration and noise near the hard disk while maintaining effective heat dissipation from other components

Inventive Principle:
Principle #3Local quality

2Temperature

If fan rotation speed is increased to dissipate heat, then heat dissipation performance is improved, but energy consumption increases

Engineering Contradiction:
Improveheat dissipation performanceVSAvoidenergy consumption
Core Design Contradiction:
TemperatureVSUse of energy by moving object

Solution Approach 1:

The system dynamically adjusts fan speed based on real-time temperature conditions rather than operating at constant high speed. When temperatures are within safe ranges, the fan operates at lower speeds, reducing energy consumption while maintaining adequate heat dissipation capacity when needed

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the operational parameters of the fan (rotation speed) based on temperature thresholds and component-specific guidelines. By adjusting the fan speed parameter dynamically according to actual thermal conditions, the system optimizes the balance between heat dissipation effectiveness and energy consumption

Inventive Principle:
Principle #35Parameter changes

3Temperature

If fan rotation speed is quickly increased to dissipate heat, then heat dissipation performance is improved, but storage read-write performance degrades

Engineering Contradiction:
Improveheat dissipation performanceVSAvoidstorage read-write performance
Core Design Contradiction:
TemperatureVSProductivity

Solution Approach 1:

The patent implements component-specific control policies that consider the unique requirements of different hardware. The hard disk is given special protection from excessive vibration and noise through localized fan speed control, while other components can have more aggressive cooling, thereby preserving storage performance while maintaining overall heat dissipation effectiveness

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The system dynamically balances the conflicting requirements of heat dissipation and storage performance by continuously monitoring temperatures and adjusting fan speed in real-time. When the hard disk is present and vulnerable to vibration, the system modulates fan speed to prioritize storage performance, while still providing adequate cooling to prevent thermal damage

Inventive Principle:
Principle #15Dynamics

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 method improves hard disk read-write speed and data transmission efficiency by fine-tuning fan speeds to match heat dissipation needs, ensuring stable operation and reducing energy consumption.

Implementation Method 1

the fan rotation speed needs to be quickly increased to dissipate heat in time

Methodology Applied
Scientific EffectForced Convection: Forced Convection

Data Source

PatentUS20250383694A1Fan control method and electronic device
Publication Date: 2025.12.18 LENOVO (BEIJING) LTD
  • US20250383694A1 patent drawing
  • US20250383694A1 patent drawing
  • US20250383694A1 patent drawing

AI summary

A fan control method includes determining a target fan that causes a degradation in storage read-write performance of the electronic device based on a relationship between a hard disk and a fan in the electronic device, where the target fan is one or part of all fans; adjusting the actual rotation speed of a to-be-adjusted fan so that characteristic parameters of each component in the electronic device meet a performance benchmark, where the to-be-adjusted fan is determined based on the target fan. The characteristic parameters of each component meeting the performance benchmark include: the temperature of each component meeting the corresponding predefined temperature guideline, and/or, the storage read-write performance of the electronic device meeting the read-write performance benchmark. The referred each component includes a hard disk.