how to deal with a complicated simulink model to perform linear analysis?

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W. Feng 2018-6-5

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https://ww2.mathworks.cn/matlabcentral/answers/404127-how-to-deal-with-a-complicated-simulink-model-to-perform-linear-analysis

编辑： W. Feng 2018-6-7

there are a complicated model with tens of subsystem in simulink model. I only want to get the bodeplot to one subsystem. I removed other unrelated block to perform linear analysis, it can get the result. But, now I would like to do the same analysis but in the whole system. But, it didn't work. the problem was happened on sys=linearize(model,io,op), the error is below, how to do solve this.

Expected a value representable in the C type 'int'. Found 2e-05 instead. Error in 'xxxx' (line 103) if ~(CPH_H >= Look_Up_Flag_Pos(CTRL_POT_DI_CMD_FLOOR+1,1) && ... Component:Stateflow | Category:Runtime error

Index exceeds array dimensions. Index value 0 exceeds valid range [1-4] of array Look_Up_Flag_Pos. Error in 'xxxxx' (line 103) Component:Stateflow | Category:Runtime error