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首页> 外文期刊>IEEE Transactions on Magnetics >Output Feedback Sliding Mode Control for a Linear Focusing Actuator in Digital Video Cameras
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Output Feedback Sliding Mode Control for a Linear Focusing Actuator in Digital Video Cameras

机译:数码摄像机线性聚焦致动器的输出反馈滑模控制

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摘要

The output feedback sliding mode control offers an effective positioning method by robustness to parameter variation and disturbance rejection. This paper presents the output feedback sliding mode control based on a position estimation algorithm written in the microprocessor for use in the focusing control system of a digital video camera to achieve fast focusing response and accurate positioning despite vibration and friction of the movable part of the linear focusing actuator. The focusing performance by utilizing the output feedback sliding mode control includes a 60-ms setting time and 7-$mu$m steady-state error, respectively, which are only half and one-third of those in proportional-integral-derivative control when the movable part of the linear focusing actuator moves at a 5-mm stroke.
机译:通过对参数变化和干扰抑制的鲁棒性,输出反馈滑模控制提供了一种有效的定位方法。本文提出了一种基于位置估计算法的输出反馈滑模控制,该算法编写在微处理器中,用于数字摄像机的聚焦控制系统,即使线性可移动部分发生振动和摩擦,也能实现快速聚焦响应和精确定位。聚焦致动器。利用输出反馈滑模控制的聚焦性能分别包括60ms的设置时间和7μm的稳态误差,这仅是比例积分微分控制时的一半和三分之一。线性聚焦致动器的可移动部分以5毫米行程移动。

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