<div dir="ltr">It might also help to know the nature of the noise that is affecting the data. Is this quantisation noise, noise from other equipment, thermal noise, ESD?<div>Trevor</div></div><br><div class="gmail_quote"><div dir="ltr">On Thu, Oct 18, 2018 at 11:51 AM Eliot Blennerhassett <<a href="mailto:ewblen@gmail.com">ewblen@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On 18/10/18 9:03 AM, Marshland Engineering wrote:<br>
> I need to do some software filtering. I'm reading a camshaft with a 0.001<br>
> linear scale and there is quite a bit of noise in the data. Looking on the web<br>
> has left me none the wiser. Rectangular or Triangle filters are an option but<br>
> these will lose some data integrity. The profile is a very gentle curve with<br>
> the data around the centre line. <br>
<br>
As others said, more context would help. Can you give us the raw data?<br>
<br>
Are you trying to measure the true profile of the cam? (by measuring its<br>
radius vs 360 degrees of rotation).<br>
<br>
Can you average data gathered from multiple rotations?<br>
<br>
--<br>
Eliot<br>
<br>
<br>
<br>
<br>
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