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高精度磁盘读取控制系统的设计及其参数整定
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作者 赵春艳 刘悦婷 张皓 《延边大学学报(自然科学版)》 CAS 2024年第3期22-27,共6页
为提高磁盘读取系统的控制精度,设计了一种高精度磁盘驱动读取控制系统.该系统由励磁电机、支撑臂、磁头滑片和转轴组成,系统以电机驱动磁头滑片到达指定的磁道读取磁通信息,以磁头滑片的位置和速度作为系统的反馈量.为提高PD控制器的精... 为提高磁盘读取系统的控制精度,设计了一种高精度磁盘驱动读取控制系统.该系统由励磁电机、支撑臂、磁头滑片和转轴组成,系统以电机驱动磁头滑片到达指定的磁道读取磁通信息,以磁头滑片的位置和速度作为系统的反馈量.为提高PD控制器的精度,设计了一种自适应调整因子的差分进化算法,并建立了RBF模型以对PD控制器的两个参数进行调整.仿真分析显示,整定后的PD控制器其超调量为0%,建立时间为1ms,且抗干扰性能也明显得到提高. 展开更多
关键词 高精控制系统 磁盘驱动读取控制 PD控制 扰动分析
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Development of Integrated Precision Vibration-Assisted Micro-Engraving System
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作者 陈华伟 程明龙 +1 位作者 李佑杰 张德远 《Transactions of Tianjin University》 EI CAS 2011年第4期242-247,共6页
A novel precision vibration-assisted micro-engraving system was developed by the integration of fast tool servo and ultrasonic elliptical vibration system, in which the flexure hinge was designed to avoid backlash and... A novel precision vibration-assisted micro-engraving system was developed by the integration of fast tool servo and ultrasonic elliptical vibration system, in which the flexure hinge was designed to avoid backlash and PID control algorithm was established to guarantee specific precision. Apart from experimental validation of the performance of the system, various micro-V-grooves cutting experiments on aluminum alloy, ferrous material and hard cutting material were performed, in which Kistler force sensor was used to measure cutting force. Through experiments, it was clear that the vibration-assisted micro-engraving system can ensure good quality of micro-V-grooves and reduce cutting force by about 60% compared with traditional removal process without ultrasonic vibration. 展开更多
关键词 micro-structure surface micro-engraving fast tool servo ultrasonic elliptical vibration precision cutting
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