Research on phase locked loop in optical memory servo system

Liqin Qin; Jianshe Ma; Jianyong Zhang; Longfa Pan; Ming Deng

doi:10.1117/12.649827

15 September 2005 Research on phase locked loop in optical memory servo system

Liqin Qin, Jianshe Ma, Jianyong Zhang, Longfa Pan, Ming Deng

Proceedings Volume 5966, Seventh International Symposium on Optical Storage (ISOS 2005); 596626 (2005) https://doi.org/10.1117/12.649827
Event: Seventh International Symposium on Optical Storage (ISOS 2005), 2005, Zhanjiang, China

Abstract

Phase locked loop (PLL) is a closed loop automatic control system, which can track the phase of input signal. It widely applies in each area of electronic technology. This paper research the phase locked loop in optical memory servo area. This paper introduces the configuration of digital phase locked loop (PLL) and phase locked servo system, the control theory, and analyses system's stability. It constructs the phase locked loop experiment system of optical disk spindle servo, which based on special chip. DC motor is main object, this system adopted phase locked servo technique and digital signal processor (DSP) to achieve constant linear velocity (CLV) in controlling optical spindle motor. This paper analyses the factors that affect the stability of phase locked loop in spindle servo system, and discusses the affection to the optical disk readout signal and jitter due to the stability of phase locked loop.

Citation Download Citation

Liqin Qin, Jianshe Ma, Jianyong Zhang, Longfa Pan, and Ming Deng "Research on phase locked loop in optical memory servo system", Proc. SPIE 5966, Seventh International Symposium on Optical Storage (ISOS 2005), 596626 (15 September 2005); https://doi.org/10.1117/12.649827

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