| 三维光盘存储系统中双光头同步控制的频域分析与辨识 |
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| 引用本文： | 江兵,沈兆龙,蔡建文,徐敏,唐火红,郉卉.三维光盘存储系统中双光头同步控制的频域分析与辨识[J].中国科学技术大学学报,2007,37(7):738-741. |
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| 作者姓名： | 江兵 沈兆龙 蔡建文 徐敏 唐火红 郉卉 |
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| 作者单位： | 1. 中国科学技术大学精密机械与精密仪器系,安徽合肥,230027
2. 中国科学技术大学精密机械与精密仪器系,安徽合肥,230027;合肥工业大学机械与汽车工程学院,安徽合肥,230009 |
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| 摘 要： | 详细介绍了双光头同步控制原理.对采集的伺服模块聚焦误差跟踪信号及共焦模块读写光头的聚焦线圈驱动信号进行了频域分析,并以此两路信号作为系统输入输出,分别对三种参数模型进行参数优化.根据3种模型的频率响应及阶跃响应,选择双光头同步控制过程的参数模型为450]阶的ARX模型.实测曲线与模型仿真结果符合度(fit)为78.0259%.
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| 关 键 词： | 三维光盘存储 双光头同步控制 频域分析 辨识 |
| 文章编号： | 0253-2778（2007）07-0738-04 |
| 修稿时间： | 2006-10-132007-02-28 |
Frequency domain analysis and identification of dual-pick-up synchro control process in 3D optical disc storage system |
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| JIANG Bing,SHEN Zhao-long,CAI Jian-wen,XU Min,TANG Huo-hong,XING Hui.Frequency domain analysis and identification of dual-pick-up synchro control process in 3D optical disc storage system[J].Journal of University of Science and Technology of China,2007,37(7):738-741. |
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| Authors: | JIANG Bing SHEN Zhao-long CAI Jian-wen XU Min TANG Huo-hong XING Hui |
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| Institution: | 1. Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hef ei 230027, China 2. School of Mechanical and Automotive Engineering Hefei University of Technology, Hefei 230009, China |
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| Abstract: | The dual-pick-up synchro control principle was described in detail.The driving signals of actuators in servo pick-up and recording pick-up were analyzed in frequency domain.With these two signals,the model parameters of three kinds of parameter models were optimized separately.According to the frequency response and step response of the three models,the ARX model(model number \) was chosen to simulate the dual-pick-up synchro control process.The fit value of measured output and simulated model output was 78.025 9%. |
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| Keywords: | 3D optical disc storage dual-pick-up synchro control frequency domain analysis identification |
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