difference between intergration metods

[guldfisk]

I want to integrate an acceleration (various frequencies) signal to velocity or displacement in the time domain. I have filtered the signal with analog low pass filter and digital high pass filter to limit the bandwidth. I am interested in frequencies 0-200hz.

Does any one now what the difference is between the “Sound and vibration” toolkit integrate module and Time domain express module (integrate) and integral x(t).vi???

Is it possible to do a double integration using any of this vi’s or just a single???

Which of them can I get the most accurate integration???

[Jimmie_A.]

Hello Guldfisk (or Goldfish)!

You can actually look at the code that the Express VI contains after you have configured it by right-clicking on it and select ’Open Front Panel’.

When it comes to the SVL Integration (time) function it has digital filters implemented something the ordinary integral function doesn’t have.

The SVL Integration (time) VI also have an input labeled ‘integration type’ that allows you to select single or double integration.