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><channel><title>Prosig Noise &#38; Vibration Blog &#187; tachometer : Noise &amp; Vibration Blog : What You Need To Know About Noise &amp; Vibration Measurement</title> <atom:link href="http://blog.prosig.com/tag/tachometer/feed/" rel="self" type="application/rss+xml" /><link>http://blog.prosig.com</link> <description>Telling you what you need to know about noise &#38; vibration</description> <lastBuildDate>Tue, 07 Feb 2012 10:49:33 +0000</lastBuildDate> <language>en</language> <sy:updatePeriod>hourly</sy:updatePeriod> <sy:updateFrequency>1</sy:updateFrequency> <generator>http://wordpress.org/?v=3.3.1</generator> <item><title>Measuring Torsional Vibration 101</title><link>http://blog.prosig.com/2012/01/24/measuring-torsional-vibration-101/</link> <comments>http://blog.prosig.com/2012/01/24/measuring-torsional-vibration-101/#comments</comments> <pubDate>Tue, 24 Jan 2012 10:26:13 +0000</pubDate> <dc:creator>Chris Mason</dc:creator> <category><![CDATA[applications]]></category> <category><![CDATA[featured]]></category> <category><![CDATA[signal processing]]></category> <category><![CDATA[acoustic]]></category> <category><![CDATA[acoustic data]]></category> <category><![CDATA[acoustics]]></category> <category><![CDATA[aliasing]]></category> <category><![CDATA[analysis]]></category> <category><![CDATA[gear train]]></category> <category><![CDATA[gears]]></category> <category><![CDATA[jitter]]></category> <category><![CDATA[measurement]]></category> <category><![CDATA[noise]]></category> <category><![CDATA[prosig]]></category> <category><![CDATA[pulses]]></category> <category><![CDATA[refinement]]></category> <category><![CDATA[rotat]]></category> <category><![CDATA[rotation]]></category> <category><![CDATA[rotational]]></category> <category><![CDATA[rotational speed]]></category> <category><![CDATA[shaft]]></category> <category><![CDATA[shaft encoder]]></category> <category><![CDATA[signals]]></category> <category><![CDATA[tachometer]]></category> <category><![CDATA[torsional]]></category> <category><![CDATA[torsional vibration]]></category> <category><![CDATA[twist]]></category> <category><![CDATA[vibration]]></category><guid
isPermaLink="false">http://blog.prosig.com/?p=2875</guid> <description><![CDATA[Do you need to measure torsional vibration? Interested in shaft twist? Worried about rotational jitter? Don&#8217;t worry, we&#8217;ve got it covered. Here we have gathered together our most popular articles...]]></description> <wfw:commentRss>http://blog.prosig.com/2012/01/24/measuring-torsional-vibration-101/feed/</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>What is Synchronous (Angular) Sampling?</title><link>http://blog.prosig.com/2011/11/09/what-is-synchronous-angular-sampling/</link> <comments>http://blog.prosig.com/2011/11/09/what-is-synchronous-angular-sampling/#comments</comments> <pubDate>Wed, 09 Nov 2011 10:22:14 +0000</pubDate> <dc:creator>Adrian Lincoln</dc:creator> <category><![CDATA[featured]]></category> <category><![CDATA[signal processing]]></category> <category><![CDATA[acoustic]]></category> <category><![CDATA[acoustic data]]></category> <category><![CDATA[acoustics]]></category> <category><![CDATA[angle domain]]></category> <category><![CDATA[angular motion]]></category> <category><![CDATA[FFT]]></category> <category><![CDATA[Fourier]]></category> <category><![CDATA[order domain]]></category> <category><![CDATA[orders]]></category> <category><![CDATA[revolution speed]]></category> <category><![CDATA[rotation angles]]></category> <category><![CDATA[shaft encoder]]></category> <category><![CDATA[synchronous]]></category> <category><![CDATA[synchronous data]]></category> <category><![CDATA[tachometer]]></category> <category><![CDATA[time domain]]></category> <category><![CDATA[vibration]]></category> <category><![CDATA[waterfall]]></category><guid
isPermaLink="false">http://blog.prosig.com/?p=2228</guid> <description><![CDATA[The term synchronous data is usually applied to vibration or acoustic data that is captured from an item of rotating equipment at regularly spaced angle intervals as distinct from regularly...]]></description> <wfw:commentRss>http://blog.prosig.com/2011/11/09/what-is-synchronous-angular-sampling/feed/</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>How To Analyze Noise &amp; Vibration In Rotating Machines</title><link>http://blog.prosig.com/2011/08/09/how-to-measure-noise-vibration-in-rotating-machines/</link> <comments>http://blog.prosig.com/2011/08/09/how-to-measure-noise-vibration-in-rotating-machines/#comments</comments> <pubDate>Tue, 09 Aug 2011 09:07:54 +0000</pubDate> <dc:creator>Chris Mason</dc:creator> <category><![CDATA[popular]]></category> <category><![CDATA[signal processing]]></category> <category><![CDATA[acceleration]]></category> <category><![CDATA[bearings]]></category> <category><![CDATA[DATS]]></category> <category><![CDATA[excitation]]></category> <category><![CDATA[fatigue]]></category> <category><![CDATA[natural frequencies]]></category> <category><![CDATA[noise]]></category> <category><![CDATA[orders]]></category> <category><![CDATA[P8000]]></category> <category><![CDATA[refinement]]></category> <category><![CDATA[rotating machinery]]></category> <category><![CDATA[tacho]]></category> <category><![CDATA[tachometer]]></category> <category><![CDATA[torsional vibration]]></category> <category><![CDATA[transmission systems]]></category> <category><![CDATA[variable speed]]></category> <category><![CDATA[vibration]]></category> <category><![CDATA[vibration analysis]]></category> <category><![CDATA[waterfall]]></category><guid
isPermaLink="false">http://blog.prosig.com/?p=2170</guid> <description><![CDATA[In this article we will look at the basic steps behind a simple rotating machinery study. We won&#8217;t look in great detail at some of the techniques involved &#8211; we deal with...]]></description> <wfw:commentRss>http://blog.prosig.com/2011/08/09/how-to-measure-noise-vibration-in-rotating-machines/feed/</wfw:commentRss> <slash:comments>3</slash:comments> <enclosure
url="http://blog.prosig.com/wp-content/uploads/2011/07/noiseSignal.mp3" length="91844" type="audio/mpeg" /> </item> <item><title>Do Missing Tacho Pulses Mean The End Of The Road For Your Test?</title><link>http://blog.prosig.com/2010/09/20/do-missing-tacho-pulses-mean-the-end-of-the-road-for-your-test/</link> <comments>http://blog.prosig.com/2010/09/20/do-missing-tacho-pulses-mean-the-end-of-the-road-for-your-test/#comments</comments> <pubDate>Mon, 20 Sep 2010 07:46:31 +0000</pubDate> <dc:creator>Dr Colin Mercer</dc:creator> <category><![CDATA[signal processing]]></category> <category><![CDATA[tutorials]]></category> <category><![CDATA[DATS]]></category> <category><![CDATA[instantaneous speed]]></category> <category><![CDATA[prosig]]></category> <category><![CDATA[pulse edge]]></category> <category><![CDATA[pulses]]></category> <category><![CDATA[resample]]></category> <category><![CDATA[rotating machinery]]></category> <category><![CDATA[tacho]]></category> <category><![CDATA[tachometer]]></category> <category><![CDATA[torsional vibration]]></category> <category><![CDATA[vibration analysis]]></category><guid
isPermaLink="false">http://blog.prosig.com/?p=1300</guid> <description><![CDATA[Creating a stable, good quality tacho signal can be one of the hardest parts of analyzing rotating machinery. So what happens if our carefully designed and implemented tacho misses a...]]></description> <wfw:commentRss>http://blog.prosig.com/2010/09/20/do-missing-tacho-pulses-mean-the-end-of-the-road-for-your-test/feed/</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>The Intelligent Way To Sort, Extract &amp; Analyze Signals</title><link>http://blog.prosig.com/2010/05/10/the-intelligent-way-to-sort-extract-analyze-signals/</link> <comments>http://blog.prosig.com/2010/05/10/the-intelligent-way-to-sort-extract-analyze-signals/#comments</comments> <pubDate>Mon, 10 May 2010 08:28:24 +0000</pubDate> <dc:creator>Adrian Lincoln</dc:creator> <category><![CDATA[applications]]></category> <category><![CDATA[signal processing]]></category> <category><![CDATA[clipping]]></category> <category><![CDATA[DATS]]></category> <category><![CDATA[event]]></category> <category><![CDATA[pump]]></category> <category><![CDATA[smoothing]]></category> <category><![CDATA[software]]></category> <category><![CDATA[speed signal]]></category> <category><![CDATA[tacho]]></category> <category><![CDATA[tachometer]]></category> <category><![CDATA[trend]]></category> <category><![CDATA[worksheet]]></category><guid
isPermaLink="false">http://blog.prosig.com/?p=727</guid> <description><![CDATA[This note is based on a real requirement presented to Prosig by a prospective user. It&#8217;s the sort of challenge that we relish. This case is a great example of...]]></description> <wfw:commentRss>http://blog.prosig.com/2010/05/10/the-intelligent-way-to-sort-extract-analyze-signals/feed/</wfw:commentRss> <slash:comments>1</slash:comments> </item> <item><title>Measurement And Analysis Of Torsional Vibration</title><link>http://blog.prosig.com/2008/10/17/measurement-and-analysis-of-torsional-vibration/</link> <comments>http://blog.prosig.com/2008/10/17/measurement-and-analysis-of-torsional-vibration/#comments</comments> <pubDate>Fri, 17 Oct 2008 07:44:13 +0000</pubDate> <dc:creator>Adrian Lincoln</dc:creator> <category><![CDATA[signal processing]]></category> <category><![CDATA[angle domain]]></category> <category><![CDATA[crankshaft]]></category> <category><![CDATA[gearbox]]></category> <category><![CDATA[nvh]]></category> <category><![CDATA[orders]]></category> <category><![CDATA[P8000]]></category> <category><![CDATA[powertrain]]></category> <category><![CDATA[pulse edge]]></category> <category><![CDATA[rotating machinery]]></category> <category><![CDATA[tacho]]></category> <category><![CDATA[tachometer]]></category> <category><![CDATA[torsional vibration]]></category> <category><![CDATA[vibration]]></category> <category><![CDATA[waterfall]]></category><guid
isPermaLink="false">http://blog.prosig.com/?p=103</guid> <description><![CDATA[Torsional vibration is of key importance in the area of vehicle development and refinement. The main contributory source is the engine where periodically occurring combustion cycles cause variation in the...]]></description> <wfw:commentRss>http://blog.prosig.com/2008/10/17/measurement-and-analysis-of-torsional-vibration/feed/</wfw:commentRss> <slash:comments>13</slash:comments> </item> <item><title>Measuring Torsional Crank Shaft Jitter</title><link>http://blog.prosig.com/2007/06/24/measuring-torsional-crank-shaft-jitter/</link> <comments>http://blog.prosig.com/2007/06/24/measuring-torsional-crank-shaft-jitter/#comments</comments> <pubDate>Sun, 24 Jun 2007 07:43:54 +0000</pubDate> <dc:creator>Chris Mason</dc:creator> <category><![CDATA[applications]]></category> <category><![CDATA[signal processing]]></category> <category><![CDATA[crankshaft]]></category> <category><![CDATA[jitter]]></category> <category><![CDATA[nvh]]></category> <category><![CDATA[orders]]></category> <category><![CDATA[rotating machinery]]></category> <category><![CDATA[tachometer]]></category> <category><![CDATA[torsional vibration]]></category> <category><![CDATA[vibration]]></category><guid
isPermaLink="false">http://blog.prosig.com/2007/11/19/measuring-torsional-crank-shaft-jitter/</guid> <description><![CDATA[Using Prosig’s P8000 series data acquisition system with DATS signal analysis software, torsional analysis (crank jitter) was performed on an automotive engine attached to an engine dynamometer. The significance of...]]></description> <wfw:commentRss>http://blog.prosig.com/2007/06/24/measuring-torsional-crank-shaft-jitter/feed/</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Evaluating A Closed Loop Control System For High Pressure Pumps</title><link>http://blog.prosig.com/2007/03/29/evaluating-a-closed-loop-control-system-for-high-pressure-pumps/</link> <comments>http://blog.prosig.com/2007/03/29/evaluating-a-closed-loop-control-system-for-high-pressure-pumps/#comments</comments> <pubDate>Thu, 29 Mar 2007 11:57:54 +0000</pubDate> <dc:creator>James Wren</dc:creator> <category><![CDATA[applications]]></category> <category><![CDATA[signal processing]]></category> <category><![CDATA[angle domain]]></category> <category><![CDATA[closed loop]]></category> <category><![CDATA[engine]]></category> <category><![CDATA[Nyquist]]></category> <category><![CDATA[pump]]></category> <category><![CDATA[tachometer]]></category><guid
isPermaLink="false">http://blog.prosig.com/2007/03/29/evaluating-a-closed-loop-control-system-for-high-pressure-pumps/</guid> <description><![CDATA[Prosig were recently involved in the validation of a closed loop control system for an automotive pump supplier. The customer has a large number of test cells, each test cell...]]></description> <wfw:commentRss>http://blog.prosig.com/2007/03/29/evaluating-a-closed-loop-control-system-for-high-pressure-pumps/feed/</wfw:commentRss> <slash:comments>1</slash:comments> </item> <item><title>Torsional Vibration, Tacho Pulses And Aliasing</title><link>http://blog.prosig.com/2006/01/12/torsional-vibration-tacho-pulses-and-aliasing/</link> <comments>http://blog.prosig.com/2006/01/12/torsional-vibration-tacho-pulses-and-aliasing/#comments</comments> <pubDate>Thu, 12 Jan 2006 15:44:34 +0000</pubDate> <dc:creator>Dr Colin Mercer</dc:creator> <category><![CDATA[signal processing]]></category> <category><![CDATA[gears]]></category> <category><![CDATA[nvh]]></category> <category><![CDATA[orders]]></category> <category><![CDATA[rotating machinery]]></category> <category><![CDATA[runup]]></category> <category><![CDATA[shaft encoder]]></category> <category><![CDATA[shafts]]></category> <category><![CDATA[tachometer]]></category> <category><![CDATA[torsional vibration]]></category> <category><![CDATA[vibration]]></category> <category><![CDATA[waterfalls]]></category><guid
isPermaLink="false">http://blog.prosig.com/2006/01/12/torsional-vibration-tacho-pulses-and-aliasing/</guid> <description><![CDATA[With shafts, gears and the like, the general method of determining the rotational speed is to use some form of tachometer or shaft encoder. These give out a pulse at...]]></description> <wfw:commentRss>http://blog.prosig.com/2006/01/12/torsional-vibration-tacho-pulses-and-aliasing/feed/</wfw:commentRss> <slash:comments>3</slash:comments> </item> <item><title>Analyzing Shaft Twist And Repairing Damaged Tachos</title><link>http://blog.prosig.com/2005/10/19/analyzing-shaft-twist-and-repairing-damaged-tachos/</link> <comments>http://blog.prosig.com/2005/10/19/analyzing-shaft-twist-and-repairing-damaged-tachos/#comments</comments> <pubDate>Wed, 19 Oct 2005 09:22:40 +0000</pubDate> <dc:creator>Dr Colin Mercer</dc:creator> <category><![CDATA[applications]]></category> <category><![CDATA[signal processing]]></category> <category><![CDATA[Butterworth]]></category> <category><![CDATA[orders]]></category> <category><![CDATA[phaseless]]></category> <category><![CDATA[rotating machinery]]></category> <category><![CDATA[runup]]></category> <category><![CDATA[shaft]]></category> <category><![CDATA[shaft encoder]]></category> <category><![CDATA[tachometer]]></category> <category><![CDATA[torsional vibration]]></category> <category><![CDATA[vibration]]></category><guid
isPermaLink="false">http://blog.prosig.com/2005/10/19/analyzing-shaft-twist-and-repairing-damaged-tachos/</guid> <description><![CDATA[A shaft has been instrumented with two shaft encoders, one at each end. Each shaft encoder gives out a once/rev pulse and a 720 pulses/rev signal. Each signal was digitised...]]></description> <wfw:commentRss>http://blog.prosig.com/2005/10/19/analyzing-shaft-twist-and-repairing-damaged-tachos/feed/</wfw:commentRss> <slash:comments>1</slash:comments> </item> <item><title>A Simple Noise Test</title><link>http://blog.prosig.com/2005/08/26/a-simple-noise-test/</link> <comments>http://blog.prosig.com/2005/08/26/a-simple-noise-test/#comments</comments> <pubDate>Fri, 26 Aug 2005 19:53:35 +0000</pubDate> <dc:creator>James Wren</dc:creator> <category><![CDATA[applications]]></category> <category><![CDATA[accelerometer]]></category> <category><![CDATA[acoustic]]></category> <category><![CDATA[exhaust]]></category> <category><![CDATA[Formula Ford]]></category> <category><![CDATA[microphone]]></category> <category><![CDATA[muffler]]></category> <category><![CDATA[noise]]></category> <category><![CDATA[nvh]]></category> <category><![CDATA[orders]]></category> <category><![CDATA[runup]]></category> <category><![CDATA[tachometer]]></category> <category><![CDATA[vibration]]></category> <category><![CDATA[waterfall]]></category><guid
isPermaLink="false">http://blog.prosig.com/2005/08/26/a-simple-noise-test/</guid> <description><![CDATA[In a recent article we described how the Prosig P8000 hardware and DATS software had been used to help Dalmeny Racing diagnose a problem with an exhaust bracket on their...]]></description> <wfw:commentRss>http://blog.prosig.com/2005/08/26/a-simple-noise-test/feed/</wfw:commentRss> <slash:comments>2</slash:comments> </item> <item><title>Phase Between Signals</title><link>http://blog.prosig.com/2005/08/09/phase-between-signals/</link> <comments>http://blog.prosig.com/2005/08/09/phase-between-signals/#comments</comments> <pubDate>Tue, 09 Aug 2005 17:08:39 +0000</pubDate> <dc:creator>Dr Colin Mercer</dc:creator> <category><![CDATA[signal processing]]></category> <category><![CDATA[phase]]></category> <category><![CDATA[rotating machinery]]></category> <category><![CDATA[tachometer]]></category><guid
isPermaLink="false">http://blog.prosig.com/2005/08/09/phase-between-signals/</guid> <description><![CDATA[The following article was written in response to a question from a visitor to the website. The gentleman in question had been reading some of the Prosig signal processing articles...]]></description> <wfw:commentRss>http://blog.prosig.com/2005/08/09/phase-between-signals/feed/</wfw:commentRss> <slash:comments>4</slash:comments> </item> <item><title>Audio Equalisation Filter &amp; Parametric Filtering</title><link>http://blog.prosig.com/2005/05/17/audio-equalisation-filter-parametric-filtering/</link> <comments>http://blog.prosig.com/2005/05/17/audio-equalisation-filter-parametric-filtering/#comments</comments> <pubDate>Tue, 17 May 2005 14:14:20 +0000</pubDate> <dc:creator>Dr Colin Mercer</dc:creator> <category><![CDATA[signal processing]]></category> <category><![CDATA[acoustic]]></category> <category><![CDATA[Butterworth]]></category> <category><![CDATA[Chebyshev]]></category> <category><![CDATA[filter]]></category> <category><![CDATA[noise]]></category> <category><![CDATA[orders]]></category> <category><![CDATA[tachometer]]></category><guid
isPermaLink="false">http://blog.prosig.com/2005/05/17/audio-equalisation-filter-parametric-filtering/</guid> <description><![CDATA[When working with audio signals a common requirement is to be able to equalise, cut or boost various frequency bands. A large number of hardware devices on the market provide...]]></description> <wfw:commentRss>http://blog.prosig.com/2005/05/17/audio-equalisation-filter-parametric-filtering/feed/</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Measuring Torsional Twist &amp; Vibration Along a Shaft or Through a Geartrain</title><link>http://blog.prosig.com/2002/05/15/torsional-vibration-example/</link> <comments>http://blog.prosig.com/2002/05/15/torsional-vibration-example/#comments</comments> <pubDate>Wed, 15 May 2002 10:10:09 +0000</pubDate> <dc:creator>Dr Colin Mercer</dc:creator> <category><![CDATA[applications]]></category> <category><![CDATA[signal processing]]></category> <category><![CDATA[engine]]></category> <category><![CDATA[gear]]></category> <category><![CDATA[nvh]]></category> <category><![CDATA[orders]]></category> <category><![CDATA[rotating machinery]]></category> <category><![CDATA[shaft]]></category> <category><![CDATA[shaft encoder]]></category> <category><![CDATA[tachometer]]></category> <category><![CDATA[torsional vibration]]></category> <category><![CDATA[twist]]></category> <category><![CDATA[vibration]]></category><guid
isPermaLink="false">http://blog.prosig.com/2002/05/15/torsional-vibration-example/</guid> <description><![CDATA[The measurement of the twist angle between two points along a shaft or through a gear train may be derived from a pair of tacho signals, one at each end...]]></description> <wfw:commentRss>http://blog.prosig.com/2002/05/15/torsional-vibration-example/feed/</wfw:commentRss> <slash:comments>3</slash:comments> </item> <item><title>High Pass Filtering And Tacho Signals</title><link>http://blog.prosig.com/2001/06/06/high-pass-filtering-and-tacho-signals/</link> <comments>http://blog.prosig.com/2001/06/06/high-pass-filtering-and-tacho-signals/#comments</comments> <pubDate>Wed, 06 Jun 2001 17:13:29 +0000</pubDate> <dc:creator>Dr Colin Mercer</dc:creator> <category><![CDATA[signal processing]]></category> <category><![CDATA[Butterworth]]></category> <category><![CDATA[engine]]></category> <category><![CDATA[gearbox]]></category> <category><![CDATA[nvh]]></category> <category><![CDATA[phaseless]]></category> <category><![CDATA[rotating machinery]]></category> <category><![CDATA[tacho]]></category> <category><![CDATA[tachometer]]></category> <category><![CDATA[vibration]]></category><guid
isPermaLink="false">http://blog.prosig.com/2001/06/06/high-pass-filtering-and-tacho-signals/</guid> <description><![CDATA[It is sometimes necessary to pass a signal through a high pass filter to eliminate low frequency signals. These may arise for instance from whole body vibrations when perhaps our...]]></description> <wfw:commentRss>http://blog.prosig.com/2001/06/06/high-pass-filtering-and-tacho-signals/feed/</wfw:commentRss> <slash:comments>2</slash:comments> </item> </channel> </rss>
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