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

YuHao Chang | Zendy; Chien-Sheng Liu | Zendy; IWei Chen | Zendy; Meng-Shiun Tsai | Zendy; H. Eric Tseng | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

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

Author(s) -

YuHao Chang,

Chien-Sheng Liu,

IWei Chen,

Meng-Shiun Tsai,

H. Eric Tseng

Publication year - 2019

Publication title -

ieee access

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.587

H-Index - 127

ISSN - 2169-3536

DOI - 10.1109/access.2019.2945882

Subject(s) - voice coil , electromagnetic coil , actuator , coil spring , slip (aerodynamics) , rod , computer science , composite number , signal (programming language) , restoring force , acoustics , materials science , engineering , mechanical engineering , physics , electrical engineering , artificial intelligence , aerospace engineering , spring (device) , algorithm , medicine , alternative medicine , pathology , programming language

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.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research