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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' d7 S  O# H% g# p- W-------------------------------------------------------
At time 1.654088834175351e-009, simulation hits (1000) consecutive zero
1 t; @: M$ C; |9 ]9 F$ D* [crossings. Consecutive zero crossings will slow down the simulation or cause
# N) q2 c+ F+ B: Athe simulation to hang. To continue the simulation, you may 1) Try using
Adaptive zero-crossing detection algorithm or 2) Disable the zero crossing of
the blocks shown in the following table.
% V8 y$ ?6 J& s3 [$ w" t! r( `. _2 x----------------------------------------------------------
# U. M: D% {5 Z, K- d: U, R
) h7 p5 V0 l( N3 M- o# w請問大家這問題該如何解?
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檔案附件如下:
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http://www.badongo.com/file/27315449
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謝謝大家