Current Table
Current source by linear interpolation in a table
Description
Data Source Options
Equations
Variables
Connections
Parameters
Modelica Standard Library
The Current Table source generates a current signal by interpolation from a table using time as the input value. The first column specifies the time values and the selected column specifies the current values.
The time values must be monotonic increasing.
The data can be provided in one of the three different ways by selecting the appropriate option from the data source parameter (see Data Source Options section below).
The data source parameter selects the source for the data. It can be either file, attachment, or inline.
file: the data is saved in an Excel or a CSV file on the hard drive. Use the data parameter to browse to and select the data file.
attachment: the data set is attached to the model. Use the data parameter to select the attachment that contains the data set.
Note: In the Attachments pane, your data set file must be attached in the Data Sets category. For more information, see Attaching a File to a Model.
Attach a Microsoft® Excel® (.xls/.xlsx) or comma separated value (.csv) file containing the data values to the model.
Generate a data set in the Apps Manager tab using either the Data Generation app or Random Data Generation app. Data sets that you generate have the .csv file extension. For more information about apps, see Using MapleSim Apps.
inline: enter the data table in the table parameter as an m (rows) by n (columns) matrix.
To change the dimensions of table, right-click (Control-click for Mac®) the parameter field and select Edit Matrix Dimensions. In the Matrix Dimensions dialog, enter values for the number or rows and columns and then click OK.
For all data source options, the first column in the data table represents the time. The other columns, 2 through n, represent the output data.
The column parameter selects which data column to output if your data table has more than two columns. By default, the second column, 2, is output.
i=ip=−in
v=vp−vn=I0+{0t<T0Itable⁡t′otherwise
t′=t−T0
Name
Units
Modelica ID
v
I
Voltage drop between the two pins
vx
V
Voltage at pin x, x∈n,p
x.v
i
A
Current flowing from pin p to pin n
ix
Current into pin x, x∈n,p
x.i
p
Positive pin
n
Negative pin
Default
data source
inline
Specifies data source; see section (above)
datasourcemode
table
01
Data set
file name
DataFileName
The path to the external file
fileName
data
Attached data set
column
2
Data column used
I0
0
Current offset
offset
T0
s
Time offset
startTime
skip rows
Number of header rows to skip
skiprows
smoothness
Linear interpolation
Selects interpolation: linear, cubic spline, or none
The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.
See Also
Analog Components
Current Sources
Electrical Library
Download Help Document