Matlab rounding to zero?
显示 更早的评论
I have some arrays that are ADC values and I simply need to convert them into actual voltage. This is easily done by ADC*Gain however when I do this Matlab gives me zero every time. Below is the code and I am multiplying (.05/65536), the ADC values are int16 data type. My ADC values are like 6000-8000 and so I should be getting around .005 or on the order of mV for my voltage. Any help would be appreciated.
for i=1:10000
A(i,:) = (ans.Channels(1,1).Acquisitions(i,:))*(.05/65536);
end
采纳的回答
Gurudatha Pai
2011-6-17
Like Sean said, convert all variables to some floating point format. You might do something like,
for i=1:10000
A(i,:) = double((ans.Channels(1,1).Acquisitions(i,:)))*(.05/65536);
end
更多回答（1 个）
Sean de Wolski
2011-6-17
int16((.05/65536))
ans =
0
Multiplication by zero is always zero... Convert to single or double precision.
类别
在 帮助中心 和 File Exchange 中查找有关 Logical 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
