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Study on chaos control of second-order non-autonomous phase-locked loop based on state observer

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  • Zhao, Yi-Bo
  • Wei, Du-Qu
  • Luo, Xiao-Shu

Abstract

With system parameters falling into a certain area, the second-order non-autonomous phase locked loop (PLL) is experiencing chaotic behavior which is undesirable in system, where it is necessary to estimate the phase of a received signal. In order to control chaos in PLL and drive it to the locked state, dynamical equation for phase error model of PLL is firstly derived. Then, the state values of phase and transient frequency errors were estimated by a state observer. Moreover, by exploiting these state estimations, a non-linear feedback controller is designed. Since the presented controller does not need to change the controlled system structure and not to use any information of system except the system state variables, the designed controller is simple and desirable. Simulation results show that the presented control law is very effective.

Suggested Citation

  • Zhao, Yi-Bo & Wei, Du-Qu & Luo, Xiao-Shu, 2009. "Study on chaos control of second-order non-autonomous phase-locked loop based on state observer," Chaos, Solitons & Fractals, Elsevier, vol. 39(4), pages 1817-1822.
    • Handle: RePEc:eee:chsofr:v:39:y:2009:i:4:p:1817-1822
    DOI: 10.1016/j.chaos.2007.06.050
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    Cited by:

    1. Stavrinides, S.G. & Miliou, A.N. & Anagnostopoulos, A.N. & Konstantakos, V. & Magafas, L. & Laopoulos, Th., 2009. "Desynchronization crisis induced intermittency in a master–slave PLL configuration," Chaos, Solitons & Fractals, Elsevier, vol. 42(1), pages 33-39.

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