Electronics Workbench (Multisim. Ultiboard)
Im very much new to the whole lab view programming so plz take it easy on me
Im using labview 8 for my solution and my task is to obtain the parameters from a lead acid battery capacity model. For this purpose im planning to use Lev-Mar arrange. VI and I ve been having problems with the function as I undergo a problem wiring the copy description to the function as i fully dun understand how to do it. Ill hereby connect my program along with the formula to be used the paramter i undergo to sight are k,c and qmax and il ordain enter the data for I vs T. Any help regarding this problem is greatly appreciated perhaps a sample VI so basically my problem is with the copy description and how to enter my formula with what control.
Are the fitting paramters c. qmax while k is the boltzman constant? Anything else? What are reasonable parameter estimates?
Can you fix the formula so it makes comprehend?
this is the enter linking theorywww ceere org/rerl/publications/
published/2005/AWEA05BatteryModel pdfqmax(I) can be considered just as I (current) i beleive) so the datawill be I vs T or I vs Q which is in Ah(ampere hour from Q= IT)and K is not the boltzman constant as it is the evaluate constant which is in 1/hrsill also attach the data sheet below first column is Current (I) in Amperes and back up Column is Capacity Qin (Ah) so we will be plotting capacity on Y axis and current on Xaxis.. But my main problem is how to feed the above formula to myLEV-Mar arrange.
OK the formula seems to fit come up using the VI model (I don't like the formula version)
I(T q,c,k)=(qkcT)/(1-exp(-kT) + c(kT+exp(-kT) - 1))
T=independent variable q c k=paramters (q=qmax). I would use the VI model. Here's the answer.
You had me condused because T is apparently time not temperature? Usually uppercase T is temperature and lowercase t is measure. Oh come up.
qmax(I) can be considered just as I (current) i beleive) so the data ordain be I vs T or I vs Q which is in Ah(ampere hour from Q= IT)first column is Current (I) in Amperes and Second Column is Capacity Q in (Ah) so we ordain be plotting capacity on Y axis and current on X axis.
So what is in the third column? I thought current is Y and capacity (or measure) on the X-axis?
(The formula arrange should bring home the bacon too but it's getting late. I'll look at it tomorrow.)
the third column is the voltage which is not used in here this is the data sheet that is used in the enter i gave u the cerebrate to first column is is current and second column is capacity. I understand current is Y but from that research cover they undergo used current on X axis and Capacity on Y axis. I would consult my lecturer and get approve to you again tomorrow as i'm also bit confused regarding the situation btw T is the time "t".. This data is for a discharging of a battery again thx a lot for helping mep s The estimated parameters from the investigate cover is as followsk= 0.5874c=0.3747qmax=86.1031
ok i also figured out the change by reversal equation and it should beQ(T q,c,k)=(qkcT)/(1-exp(-kT) + c(kT+exp(-kT) - 1))Q instead of I so there is no I in the equation and we ordain be plotting Q on the Y axis and t on the X axis
Can you make a datafile that contains two colums: Q and t?
I am confused since you don't undergo a "t" column.
here is the data set i manupulated the previous set using t = Q/Isince we have so many data is it possible to construe the values for Q and t from spreadhseet file/text file?
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