labview-mathematica-rlc

LabVIEW 2018/2019 program that solves for the values of each component in a physical Resistor, Inductor, and Capacitor (RLC) circuit by analyzing the frequency response of the circuit.

• Each Call to Mathematica is done by programmatically creating a batch file (that overwrites the previous batch file, unless a new name is specified) that calls on a wolfram script. The wolfram script performs non-linear regression on data saved as a .csv by the labview program. The wolfram script outputs the results in a .csv that is then read back in by labVIEW.
  • This implementation (and therefore this program) was designed to run on Windows 10 , however, I imagine a similar work around could be created for macOS.
  • LabVIEW contains the ability to perform nonlinear regression, however, I am more familiar with Mathematica's tools
• Included is the main program vi, along with all the other sub vi's. Programs contain comments for understanding.

Necessary Equipment:

• 1 Function Waveform Generator (Agilent 33120A),
• 2 Digital Multimeters (Agilent 34401A),
• 2 Decade Resistors (General Radio 1443-J),
• 1 Decade Capacitor (General Radio 1419-B),
• 1 Decade Inductor (General Radio 1491-D),
• 9 Banana cables,
• 2 usb to serial converters,
• 3 serial cables,
• 1 BNC to Banana Cable Converter,
• 3 null modem adapters,
• 1 Windows 10 computer with LabVIEW 2019 (or LabVIEW 2018) and with Mathematica 12

Drawing of Setup (also located in root directory as setup.png)

Steps to Follow Once you have the Equipment Set Up:

I have created these ranges because with certain configurations the frequency response is either too wide or too peaked to perform timely analysis on.

1: Choose Capacitor Value:

• Capacitor Range: (2.7 ≤ C ≤ 1,000) x 10^(-9) F

2: Choose Inductor Value:

• Inductor Range: (0.027 ≤ L ≤10) H

3: Choose Resistor Value:

• If L ≤ 0.16 H :

  • Then (1 < R < 3000) Ω

• If (0.16 < L ≤5) H :

  • Then R > 3000 Ω

• If L > 5 H :

  • Then R > 6000 Ω