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基于离线优化的压电陶瓷物镜驱动系统PID控制器

Keywords: 压电陶瓷,PID,模糊控制,遗传算法,离线优化

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Abstract:

针对数字共焦显微技术中的压电陶瓷物镜驱动系统,分析了模糊PID控制器的控制性能,提出了离线优化思想,将初始参数的优化从在线实时调整中分离出来,在离线状态下预先采用遗传算法完成全局优化,以减小在线调整时间及调整次数,提高响应速度.经优化的初始参数配置于模糊PID控制中,对系统进行在线实时反馈调整,控制系统进行步进定位驱动.在Matlab环境下的实验结果表明,该方法显著提高了系统的控制精度和响应速度,为驱动系统的进一步研究提供理论依据.

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