Control device and system

By installing a control device on the frame, storing and outputting a specific duty cycle signal to control motor rotation, the equipment resonance problem caused by fan vibration is solved, and vibration suppression and data stability are improved.

CN120345173APending Publication Date: 2025-07-18NIDEC CORP(JP)
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Patent Information

Application Number
CN202380083417.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2022-12-09
Filing Date
2023-11-21
Publication Date
2025-07-18

AI Technical Summary

Technical Problem

When the device and the fan are mounted on the frame inside the housing, the vibration of the fan can cause the device to resonate, especially when HDD can cause data read or write errors.

Method used

A control device is used to install on the frame with the motor, which stores information on the duty cycle and resonance range corresponding to the motor speed, and outputs a signal of a specific duty cycle to control the motor rotation and avoid resonance when the target speed is included in the resonance range.

Benefits of technology

Effectively suppresses vibration of devices on the frame, reduces noise generation, and prevents data reading or writing errors of HDD.

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Abstract

Provided is a technique capable of suppressing vibration of a device attached to a housing. The control device is mounted on the frame (2013) together with the device (202). The control device is provided with: a storage unit (233) that stores information indicating a duty ratio corresponding to the rotational speed of the motor (24) and a rotational speed range of the motor (24) in which the device (202) resonates; and a processing unit (232). When the target rotational speed of the motor (24) is included in the range, the processing unit (232) outputs, on the basis of the information, a first signal having a duty ratio corresponding to a rotational speed larger than an upper limit value of the range or a second signal having a duty ratio corresponding to a rotational speed smaller than a lower limit value of the range. The motor (24) rotates in accordance with the first signal or the second signal output from the processing unit (232).
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