4 order pll simulation using matlab

hungda50310

最近想使用matlab模擬PLL的behavior，
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+ J, W4 B+ n* D8 f: H( `; V但block接好後，卻無法模擬，出現下面error
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2 d) S* K& O( E3 r* y/ Q0 u-------------------------------------------------------
2 m3 b: w/ p, oAt time 1.654088834175351e-009, simulation hits (1000) consecutive zero
( m& r  h# v/ N% Q8 z7 C  vcrossings. Consecutive zero crossings will slow down the simulation or cause
! b/ c( _4 ?2 Y9 B+ U9 D! S. A$ Xthe simulation to hang. To continue the simulation, you may 1) Try using
7 L& H8 Q: a5 ~$ c7 ^1 H3 OAdaptive zero-crossing detection algorithm or 2) Disable the zero crossing of
- ^  h/ T+ b( Uthe blocks shown in the following table.
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請問大家這問題該如何解?
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8 d3 j! M/ H% L- p檔案附件如下:
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+ g* U" H) T+ j3 D5 U1 `http://www.badongo.com/file/27315449

謝謝大家