【摘要】 采用有限状态机描述光存储伺服系统的状态转换过程。有限状态机通过CPLD硬件实现,以控制光学头的运动状态。根据DVD伺服标准的要求,设计超前滞后补偿器对整个伺服环路进行补偿。利用标准光学头和标准盘片对整个伺服系统进行了测试。测试结果表明,该伺服系统精度较高,聚焦精度小于10%,循迹精度小于20%,对于标准盘片能得到较高的Jitter(<8%)。更多还原

【Abstract】 The optical disk storage servo system state was described by the finite state machine model.The finite state machine to control the optical pick-up motion was realized by the CPLD.The lead-lag compensator was designed according to DVD servo standard.Then the whole system was test by standard optical pickup and standard disk.The results shows the servo system has high precision,focus precision is less than 10% and tracking precision is less than 20%.The jitter is less than 8% by using standard DVD.更多还原