The values of desired_speed and desired_trq are 1 & 99, the typedef is PERCENTAGE which of integer type,but while simulating it is showing fraction values, Is this something to do with the "PERCENTAGE " typedef ?

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Manjunath Bhimalli 2019-1-3

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https://ww2.mathworks.cn/matlabcentral/answers/438044-the-values-of-desired_speed-and-desired_trq-are-1-99-the-typedef-is-percentage-which-of-integer-t

评论： Mark McBroom 2019-1-8

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typdef definition of PERCENTAGE in .m :

PERCENTAGE.WordType = 'uint16';

PERCENTAGE.DataTypeMode = 'Fixed-point: slope and bias scaling';

PERCENTAGE.Signed = 0;

PERCENTAGE.WordLength = 16;

PERCENTAGE.ScalingMethod = 'gain/offset';

PERCENTAGE.Gain = 2^15/100;

PERCENTAGE.DisplayMin = 0;

PERCENTAGE.DisplayMax = 199.9;

PERCENTAGE.DisplayPrecision = 8;

PERCENTAGE.Description = 'This is the percentage datatype';

PERCENTAGE.DisplayUnits = 'percent';

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Mark McBroom 2019-1-5

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https://ww2.mathworks.cn/matlabcentral/answers/438044-the-values-of-desired_speed-and-desired_trq-are-1-99-the-typedef-is-percentage-which-of-integer-t#answer_355168

You have specified PERCENTABE to used fixed point data type. Simulink is showing you the floating point equivalent of the integer value after applying the specified slope and bias scaling.

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Manjunath Bhimalli 2019-1-8

I am expecting integer 1 as 1.00000000 in fraction not as 1.0009765625 with the same 'DataTypeMode = Fixed-point: slope and bias scaling' is that possible?

Mark McBroom 2019-1-8