If you are visiting the SAE 2013 Noise and Vibration Conference and Exhibition in Grand Rapids (May 20th – 23rd) then please come along and see us at booth 409. Ken Goward & John Mathey of Prosig USA will be at the show along with Adrian Lincoln from the Prosig in the UK. They will be more than happy to show you all the latest versi [...]
Posts tagged Prosig
Come and see Prosig at SAE 2013 Noise...
If you are visiting the SAE 2013 Noise and Vibration Conference and Exhibition in Grand Rapids (May 20th – 23rd) then please come along and see us at booth 409. Ken Goward & John Mathey of Prosig USA will be at the show along with Adrian Lincoln from the Prosig in the UK. They will be more than happy to show you all the latest versi [...]
What Can I Do About Spikes In My Data...
Whether you call them spikes, glitches, anomalies or data dropouts, these phenomena have been a problem to engineers ever since they started recording data. There are any number of reasons why these problems occur.
Sometimes it may be possible to repeat a test, but more often a busy engineer doesn’t have time or the test item has long g [...]
Come & see Prosig at Testing Exp...
Prosig will be at Automotive Testing Expo North America from today, October 23rd, until October 25th 2012. Among the hardware and software on display will be some of the latest developments to Prosig P8000/DATS mobile systems. These include
CAN-bus/GPS capabilities including CAN CCP
new higher density channel counts
new RapidResults technolo [...]
Understanding & Measuring Noise
There are many reasons to measure and analyze noise. It may relate to legislation or regulations that limit noise in certain environments, we could be using the noise to investigate a related issue or maybe simply improving the noise of a vehicle or other product.
Prosig are experts in measuring and analyzing noise. Follow the links below to [...]
2nd Annual Prosig / Portsmouth Univer...
The 2nd Annual Prosig Prize for Engineering at Portsmouth University has been awarded to Ashley Stehr for his project “Developing an engineering mechanism to reduce the effects of rapid rotational motion caused by the shocks inherent with high speed craft”. Ashley is in his third year studying for an MSc in Mechanical Engineering. [...]
Vibration Condition Monitoring Doesn&...
Have you ever wondered if there is a vibration condition monitoring system that can be installed anywhere and then monitored from anywhere else? Even on your smartphone? Well, there is. The following article explains how Prosig’s PROTOR-mobile vibration condition monitoring system can offer just such a solution.
Sometimes vibration issu [...]
New Version Of DATS Out Now – V...
The latest version of Prosig’s DATS software was released today and is available to download from the Prosig Support web pages. Read on to find out about some the new features… (more…)
Understanding the Importance of Trans...
When monitoring vibration on large gas or steam turbines and generators with fluid-film bearings, the relative movement of the shaft within the bearing is typically measured by a pair of shaft proximity (eddy current) transducers. Data from these transducers is used to produce a variety of plots on a condition monitoring system including orbi [...]
Testing Times : Why & How We Mea...
We’re going to look today at some of the practical aspects of testing and consider why it’s important that you should measure and, more importantly, understand the noise and vibration of your products
The current global economic situation means that times are tough for everyone. It’s now that you need a competitive edge; tha [...]
Mari Aerotech To Attend Automotive Te...
Prosig’s Indian distributor, Mari Aerotech, will be exhibiting at Automotive Testing Expo India 2012. The conference runs on 6th, 7th & 8th March 2012 at Chennai Trade Centre.
Automotive Testing Expo India was launched with massive success last year in Hyderabad, Automotive Testing Expo India and will move to Chennai in 2012, one of [...]
Measuring Torsional Vibration 101
Do you need to measure torsional vibration? Interested in shaft twist? Worried about rotational jitter? Don’t worry, we’ve got it covered. Here we have gathered together our most popular articles on the subject of torsional vibration to give you a complete 101 on the subject.
All of the articles below make extensive use of Prosig& [...]
What Is The Difference Between Single...
Prosig P8000 systems use differential inputs, but what are they and why are they so special? This subject is not always fully understood and, therefore, the focus of this article is to try to make the difference clearer and explain why differential inputs are the obvious choice in a high quality, high precision system like the Prosig P8000.
F [...]
High Dynamic Range – Fact or Fiction?
At least one manufacturer of data acquisition systems claims to achieve an incredibly high dynamic range (160dB) when capturing data. This is supposedly achieved by the use of dual-range data acquisition architecture. Such systems have two analog-to-digital convertors for each input channel; one of the ADCs captures the full voltage range of [...]
Using Your VCM To Monitor Auxiliary E...
The use of a vibration condition monitoring system for monitoring vibration from large rotating machines fitted with fluid-filled journal bearings such as steam or gas turbines is well understood. Vibration from these components generally falls within the main harmonics or orders of the shaft rotational speed such as 1st, 2nd 3rd or 4th harmo [...]
Do You Need To Measure Brake Noise?
The objective of the brake noise tests was to record the braking events of cars being driven on various types of road and classify those events according to their type (Groan, Creep or Squeal etc) and severity. To do this the customer needed a system capable of working for long periods inside a vehicle in fairly tough conditions (high ambien [...]
Do Missing Tacho Pulses Mean The End ...
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 few pulses? The data looked great until we tried to perform some in-depth torsional vibration analysis. And now we no longer have the component or vehicle to ret [...]
Developing an Algorithm for Tick Dete...
An investigation was made of a sample of automotive components where some were exhibiting a high frequency “tick” or rattle during each operating cycle. This feature could be heard above the normal operating noise. The problem this posed was to measure and analyze components in an objective fashion and classify components as “good” [...]
Removing A-Weighting From Time Histor...
It sometimes occurs that signals are captured with A-weighting applied to the data by the acquisition device. This can be a problem if, for example, you wish to use the data in a hearing test or to use it for a structural vibration analysis. Now, A-weighting allegedly mimics what the ear does to a signal. If we play back an A weighted sound t [...]
Vibration Condition Monitoring Using ...
Ever been lying on the beach and begun to wonder about the state of your LP turbines? Or out on business and anxious to know if that troublesome exciter bearing has settled down? Well with a Prosig PROTOR system and a smartphone anything’s possible. Many of you will be familiar with using your phone as a camera, music player, web browser, ema [...]
The Intelligent Way To Sort, Extract ...
This note is based on a real requirement presented to Prosig by a prospective user. It’s the sort of challenge that we relish. This case is a great example of a real-world signal processing requirement and also great test of some of the unique features of Prosig’s DATS software. It also shows the power and flexibility of the new D [...]
Comparing Vibration On Bicycle Suspen...
This video was sent to us by one of our customers. It shows how a Prosig P8000 was used to measure the vibration transmitted through different configurations of bicycle suspension. Two are traditional setups (a rigid bike and a dual suspension one) and the third is a new interconnected suspension (likened to a railway bogie). This new setup c [...]
Prosig launch new PROLOG data acquisi...
Prosig have welcomed 2010 with the official launch of their PROLOG data acquisition controller.
PROLOG is a controller that will allow remote, unattended or standalone operation of a P8000 system. In normal operation a P8000 data acquisition system is connected to a laptop or PC and data is stored, in real-time, on the computers hard drive vi [...]
Amplitude And Energy Correction – A B...
Amplitude and energy correction has been and is a continuing point of confusion for many people calculating spectra from time domain signals using Fourier transform methods. The first thing to say, the information contained in data presented as amplitude and energy corrected spectra is equivalent. The only difference is the scaling of the num [...]
Data Windows : What, why and when?
Before we discuss the use of data windows, we should first remind ourselves of three basic properties of the FFT (Fast Fourier Transform) process.
First, energy information in signal must be preserved during transformation. That is, the energy measured on time signal must equal the energy measured on the frequency representation of that sign [...]
Interpolation Versus Resampling To In...
These are two different techniques aimed at different objectives. First consider a simple sinewave that has been sampled close to the Nyquist frequency (sample rate/2).
Visually this looks very pointy. We will examine it using a filter based interpolation and a classical curve fitting procedure to obtain a better representation.
(more… [...]
