摘要
采用现场可编程门阵列(FPGA)实现了自动相机聚焦(AF)镜头模块位置控制电机伺服控制系统集成电路(IC)的全数字控制设计。镜头模块位置控制驱动电机由具有数字伺服驱动的音圈电机(VCM)担任,数字伺服驱动包括数字伺服控制器、数字电流控制器和全桥DC-DC转换器,系统能为高性能、轻质量和超薄型的移动式自动相机的AF镜头模块位置控制提供完整的数字控制方案,使相机的AF镜头模块控制范围在30 ms内可以达到0.6 mm,控制分辨率小于5μm,驱动力峰值为30 mN,输出电流峰值为120 mA。
This paper implemented a fully digital control IC for the position control motor servo control system of the auto-focus（AF） lens module in applications to mobile camera using the field programmable gate array（FPGA）.The position control drive motor of AF lens module was driven by a voice-coil motor（VCM） with a digital servo drive IC.The proposed digital servo drive IC included a digital servo controller,a digital current controller,and a full-bridge DC-DC converter.The system can provide a total digital solution to the position control of the AF lens module position control in applications to high-performance,light-weight and slim-type mobile phone camera,and makes the AF lens module position control can reach a control range of 0.6 mm within 30 ms with a control resolution less than 5 μm,a peak driving force of 30 mN,and a peak output current of 120 mA.
出处
《微电机》
北大核心
2012年第7期50-54,共5页
Micromotors
基金
2011年度国家青年自然科学基金(51107107)
2011年度四川省教育厅重点项目(11ZA022)
