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首页> 外文期刊>IEEE Transactions on Magnetics >Sliding Mode Control Using Virtual Eigenvalue Method for Compact Optical Image Stabilization Actuators
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Sliding Mode Control Using Virtual Eigenvalue Method for Compact Optical Image Stabilization Actuators

机译：基于虚拟特征值方法的紧凑型光学防抖执行器滑模控制

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The latest research in optical image stabilization actuators (OISA) focuses on improving the image quality of high resolution cameras in a photographing optical system (POS). The focal image blur is always caused of external and environmental jitter when pictures of an image sensor are acquired by photographers. Several works concerned for OISA are emphasized mainly OISA design methods; consequently, they are devoted to minimizing dimensions and maximizing driving magnetic force with low power consumption. Although two proportional-integral-derivative controllers and lead-lag compensators have been proposed to position dual axes of OISA in a POS, they lack robustness to compensate nonuniform friction, system uncertainty, and external disturbance. Therefore, this work aims at the sliding mode control (SMC) using virtual eigenvalue method to achieve fast time response and accurate position despite vibration from external jitter and friction of a compact OISA. The sliding surface can be reached in finite time to match disturbance. Accordingly, the SMC algorithm works well despite system uncertainty and external disturbance, and then the time response of simulation and experiment are matched. In consequence, the settling time of dual axes are converged within 0.2 s when the dual axes of movable platform of a compact OISA move at 0.5 mm stroke in a POS.
机译：光学图像稳定执行器（OISA）的最新研究集中于提高照相光学系统（POS）中高分辨率相机的图像质量。当摄影师拍摄图像传感器的图像时，焦点图像模糊总是由外部和环境抖动引起的。与OISA有关的几项工作主要着重于OISA设计方法。因此，它们致力于以最小的功耗来最小化尺寸和最大化驱动磁力。尽管已经提出了两个比例积分微分控制器和超前滞后补偿器来将OISA的双轴定位在POS中，但是它们缺乏鲁棒性来补偿不均匀的摩擦，系统不确定性和外部干扰。因此，这项工作的目标是使用虚拟特征值方法进行滑模控制（SMC），以实现快速的时间响应和精确的位置，尽管有外部抖动引起的振动和紧凑型OISA的摩擦。可以在有限的时间内达到滑动表面以匹配干扰。因此，尽管存在系统不确定性和外部干扰，SMC算法仍能很好地工作，然后将仿真和实验的时间响应进行匹配。因此，当紧凑型OISA的可移动平台的双轴在POS中以0.5 mm的行程移动时，双轴的建立时间收敛在0.2 s之内。

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