4 order pll simulation using matlab

hungda50310

最近想使用matlab模擬PLL的behavior，
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但block接好後，卻無法模擬，出現下面error
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, A0 X7 a* B5 p' p+ n& J. |) RAt time 1.654088834175351e-009, simulation hits (1000) consecutive zero
crossings. Consecutive zero crossings will slow down the simulation or cause
) ~' R% p3 x1 C( R  f; o9 Fthe simulation to hang. To continue the simulation, you may 1) Try using
3 w# I4 a  O6 X' pAdaptive zero-crossing detection algorithm or 2) Disable the zero crossing of
the blocks shown in the following table.
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/ [! `: O! E5 v4 C' X/ E9 P$ b$ f5 X請問大家這問題該如何解?
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+ ^$ R* {" P4 ?' {; {! u) ]檔案附件如下:

http://www.badongo.com/file/27315449
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" J9 W: D0 c7 I) h& j7 N謝謝大家