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Ansoft Designer / Ansys Designer 在线帮助文档：

System Simulator >
System Component Models >
Sources >
Piecewise Linear Source (PWL)

Piecewise Linear Source (PWL)

Property	Description	Units	Default	Range/Type
T1....Tn	Time instance	Sec	0	[0, Inf)/Real
V1....Vn	Voltage at corresponding time instance	Volt	0	[0, Inf)/Real
File	File name	None	Optional	String
NSAMP	Number of samples of the output waveform	None	100	(0, Inf)/Real
SAMPLE_RATE	Output sample rate	Hz	1000	(0, Inf)/Real
ROUT	Output impedance	Ohm	0	[0, Inf)/Real
Ports
Output	Output signal (real)

Notes

1. This model outputs a piece wise linear waveform. The waveform is defined by either the parameters T and V, or by the external file. The external file should be a text file with two columns of data: the first column being time points and the second column being voltage points. Note that the external file is predominant over the parameters T and V when both are specified.

2. Linefeeds are optional in external files, which means that:

# s v
0 0
1 0
2 1
3 1
4 1 5 1 6 2 7 2 8 0 9 0 10 1

will be parsed the same as:

0 0
1 0
2 1
3 1
4 1
5 1
6 2
7 2
8 0
9 0
10 1

Netlist Form

PWL:Name n1 [T1...Tn=val] [V1...Vn=val] [File=val] NSAMP=val SAMPLE_RATE=val [Rout=Val]

Netlist Example

PWL:1 1 NSAMP=1000 SAMPLE_RATE=100KHZ T1=1s T2=2s T3=4s V1=1v V2=5.2v V3=1.3v

PWL:1 1 NSAMP=1000 SAMPLE_RATE=100KHZ FILE=”pwl.txt”

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