Open-Loop Control of Voice Coil Motor with Magnetic Restoring Force Using High-Low Frequency Composite Signals

Yu Hao Chang; Chien Sheng Liu; I. Wei Chen; Meng Shiun Tsai; Hsiang Chun Tseng

doi:10.1109/ACCESS.2019.2945882

Open-Loop Control of Voice Coil Motor with Magnetic Restoring Force Using High-Low Frequency Composite Signals

Yu Hao Chang, Chien Sheng Liu, I. Wei Chen, Meng Shiun Tsai, Hsiang Chun Tseng

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

This study proposed an approach to control voice coil motors (VCMs) installed in smartphone modules as autofocus actuators. The VCM developed in this study comprises guide rods. The magnetic field attraction force between guide rods and movable parts serves as lens restoring force. This study did not use feedback elements to avoid the stick-slip phenomenon between VCM guide rods and movable parts. Instead, this study used a high-low frequency composite signal based on the findings from a mathematical model analysis and VCM dynamic attribute analysis, preventing stick-slip and offering the VCM a more favorable positioning precision.

Original language	English
Article number	8861036
Pages (from-to)	146258-146263
Number of pages	6
Journal	IEEE Access
Volume	7
DOIs	https://doi.org/10.1109/ACCESS.2019.2945882
Publication status	Published - 2019 Oct 7

All Science Journal Classification (ASJC) codes

General Computer Science
General Materials Science
General Engineering

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abstract = "This study proposed an approach to control voice coil motors (VCMs) installed in smartphone modules as autofocus actuators. The VCM developed in this study comprises guide rods. The magnetic field attraction force between guide rods and movable parts serves as lens restoring force. This study did not use feedback elements to avoid the stick-slip phenomenon between VCM guide rods and movable parts. Instead, this study used a high-low frequency composite signal based on the findings from a mathematical model analysis and VCM dynamic attribute analysis, preventing stick-slip and offering the VCM a more favorable positioning precision.",

author = "Chang, {Yu Hao} and Liu, {Chien Sheng} and Chen, {I. Wei} and Tsai, {Meng Shiun} and Tseng, {Hsiang Chun}",

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AU - Liu, Chien Sheng

AU - Chen, I. Wei

AU - Tsai, Meng Shiun

AU - Tseng, Hsiang Chun

PY - 2019/10/7

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N2 - This study proposed an approach to control voice coil motors (VCMs) installed in smartphone modules as autofocus actuators. The VCM developed in this study comprises guide rods. The magnetic field attraction force between guide rods and movable parts serves as lens restoring force. This study did not use feedback elements to avoid the stick-slip phenomenon between VCM guide rods and movable parts. Instead, this study used a high-low frequency composite signal based on the findings from a mathematical model analysis and VCM dynamic attribute analysis, preventing stick-slip and offering the VCM a more favorable positioning precision.

AB - This study proposed an approach to control voice coil motors (VCMs) installed in smartphone modules as autofocus actuators. The VCM developed in this study comprises guide rods. The magnetic field attraction force between guide rods and movable parts serves as lens restoring force. This study did not use feedback elements to avoid the stick-slip phenomenon between VCM guide rods and movable parts. Instead, this study used a high-low frequency composite signal based on the findings from a mathematical model analysis and VCM dynamic attribute analysis, preventing stick-slip and offering the VCM a more favorable positioning precision.

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Open-Loop Control of Voice Coil Motor with Magnetic Restoring Force Using High-Low Frequency Composite Signals

Abstract

All Science Journal Classification (ASJC) codes

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