高性能光盘系统径向动态特性数学模型研究

研究了光盘机械系统的径向动态特性,给出了描述该特性的完备数学模型.将根据该模型进行数值计算的结果和当前高性能光盘国际标准规定的性能参数进行比较,验证了该模型的正确性;在此基础上,研究了改善现有光盘机械系统径向动态特性的途径.研究表明,影响光盘径向动态特性的关键参数是比值K,适当减小K能大幅降低径向偏摆及偏摆加速度.研究了光盘机械系统动态特性对下一代光存储系统结构的影响,并指出下一代超高密度光存储系统必须采用固定式装夹形式.

Mathematical models for the radial dynamical characteristic of optical disks with high performance

After the radial dynamical characteristic of the optical disk system was analyzed, mathematical models for this characteristic of the optical disk system were proposed. By the comparison of the calculated results with ISO/ICE standards by using this model, the correctness of the model was verified. Some approaches to improve the dynamical characteristic of the current optical disk systems were provided. It was seen that the ratio K was the key parameter affecting the radial dynamical characteristic of optical disks and the radial performance of the optical disks can be improved by decreasing K. The influences of the radial dynamical characteristic of the optical disk mechanical systems on the next generation optical storage systems were studied. It was concluded that the next generation optical storage system with super high density should use fixed clamping.