I am currently using Labview 8.2, 2 accelerometers and a vibration table for one of my research project project is essentially a calibration routine that would run through a set of frequencies (say 5Hz to 40 Hz), read the data from the accelerometers (units are in G's) and save it in a table. Afterwards, I would like the data to be processed in order to make sure that I have a constant output amplitude on the vibration table. As the frequency of the table increases, the amplitude decreases therefore this routine is necessary for my project.
I have most of the project completed however, I am having problems with the calibration data processing. I was debating if I should use a feedback controller in order to get a constant amplitude or simply create a lookup table with all the value already predefined. The issue with the lookup table is that it will only work with one type of object/mass then the lookup table has to be updated manually. In the case of the feedback controller, I do not have the PID toolkit. Does anyone know how to create a simple feedback VI that will allow me to send values from the accelerometers and enable it to control the output (DAC, Ni PXI 6722) to the vibration table?
Thanks