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An Adaptive Feedforward Control Method of Hard Disk Audio Vibration Based on Headphone Jack Signal Extraction

A signal extraction, headphone jack technology, applied in the direction of adaptive control, general control system, control/adjustment system, etc., can solve the problem of adaptive feedforward compensation performance limited sensor measurement bandwidth, etc., to improve hard disk performance, avoid The effect of bandwidth limitation and system cost reduction

Inactive Publication Date: 2021-01-26
CAS HEFEI INST OF TECH INNOVATION
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the defect in the prior art that the adaptive feedforward compensation performance is limited by the sensor measurement bandwidth, and provide a hard disk audio vibration adaptive feedforward control method based on the headphone jack signal extraction to solve the above problems

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  • An Adaptive Feedforward Control Method of Hard Disk Audio Vibration Based on Headphone Jack Signal Extraction
  • An Adaptive Feedforward Control Method of Hard Disk Audio Vibration Based on Headphone Jack Signal Extraction
  • An Adaptive Feedforward Control Method of Hard Disk Audio Vibration Based on Headphone Jack Signal Extraction

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[0048] In order to have a further understanding and understanding of the structural features of the present invention and the achieved effects, the preferred embodiments and accompanying drawings are used for a detailed description, as follows:

[0049] Such as figure 1 As shown, a kind of hard disk audio frequency vibration adaptive feed-forward control method based on the headphone jack signal extraction of the present invention replaces the existing sensor by extracting the speaker signal, thereby greatly avoiding sensor bandwidth, high system cost and Robustness related issues.

[0050] By using the audio vibration source (speaker) signal to convert the analog speaker signal into a digital signal, and then processing it using the SAFF scheme, the implementation of SAFF technology can compensate for the PES signal without affecting the bandwidth limitation of the sensor. In addition, system costs are reduced due to the reduced number of sensors. However, there are two fac...

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Abstract

The invention relates to an adaptive feedforward control method of hard disk audio vibration based on earphone jack signal extraction, which solves the defect that the performance of adaptive feedforward compensation is limited by the measurement bandwidth of a sensor compared with the prior art. The invention comprises the following steps: extraction and digitization of audio signals; recognition of mechanical transmission functions; calculation of feedforward compensation signals for position error control. The present invention uses a speaker-based adaptive feed-forward approach to reduce system cost while avoiding the bandwidth limitations of hard drive servo systems.

Description

technical field [0001] The invention relates to the technical field of hard disk drives, in particular to a hard disk audio vibration self-adaptive feedforward control method based on earphone jack signal extraction. Background technique [0002] As multimedia applications become more and more important in the daily use of notebook computers, the increased vibration caused by the speakers creates a challenge for hard disk drive (HDD) position control. Degraded hard drive throughput performance and slower response times due to speaker vibrations are detrimental to the customer experience. In order to improve the application effect of notebook computer hard disk drives, the hard disk drive industry is required to improve its audio vibration suppression performance. [0003] Currently in the HDD industry, the Sensor-Based Adaptive Feed-Forward (SAFF) disturbance compensation scheme has been researched and applied for many years, which utilizes sensors, such as accelerometers, ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 王海雷李文波吴雪莲
Owner CAS HEFEI INST OF TECH INNOVATION