# Linearization issue using Fast V7.02

**URL:** <https://forums.nlr.gov/t/linearization-issue-using-fast-v7-02/1063>\
**Category:** Computer-Aided Engineering Software Tools\
**Created:** [February 5, 2015, 8:40am UTC](https://forums.nlr.gov/t/linearization-issue-using-fast-v7-02/1063 "2015-02-05T08:40:10Z")\
**Posts on this page:** 1\
**Showing post:** 31

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**Author:** ![Jason.Jonkman](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/jason.jonkman/32/3086_2.png) [@Jason.Jonkman](https://forums.nlr.gov/u/Jason.Jonkman)\
**Post date:** [August 11, 2017, 7:11pm UTC](https://forums.nlr.gov/t/linearization-issue-using-fast-v7-02/1063/31 "2017-08-11T19:11:57Z")

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Dear Yanhua,

I have not looked at your attachment, but I would not use the cce.m script. It is far better to apply MBC3 and then azimuth-average the MBC-transformed matrices. Please see the MBC3 documentation for information on what it is doing. As discussed in my post dated May 07, 2010 in the following forum topic: [Fast Linearized Models - #4 by Jason.Jonkman](http://forums.nlr.gov/t/fast-linearized-models/249/4), MBC does not eliminate the periodicity, it simply transforms the rotating states of a model into the nonrotating frame and further azimuth-averaging of the lightly-periodic MBC-transformed matrices (i.e. averaging the 36 matrices into 1 single matrix) has been shown to be quite adequate for controls design.

Best regards,

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