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Category Archives: Dynamic Signal Analysis
Evaluating Controller Performance – Part 1 – Swept Sine
This is part one in a series of articles about how to evaluate the quality of a vibration control system. In each we will present important features of the control Continue Reading →
Dynamic Signal Analysis Review: Part 3 – Aliasing
Aliasing is an interesting phenomenon, whose understanding is useful when selling or using dynamic signal analyzers and controllers. Although all Data Physics equipment and most modern analyzers virtually eliminate this Continue Reading →
Understanding Shock Response Spectra
Shock Response Spectra (SRS) are now widely used in many industries. Data Physics analyzers and controllers make the process of measuring Shock Response Spectra and producing transients from a given Continue Reading →
Dynamic Signal Processing Review Part 2 – The Frequency Domain
To effectively understand dynamic signal analyzers and vibration controllers, this article aims to describe basic dynamic signal analysis concepts. Many dynamic data processing techniques involve transforming the data to the Continue Reading →
Piping Analysis in Industrial Process and Power Generation Applications
Piping Analysis in Industrial Process and Power Generation Applications; a view into how our analyzers can be applied In this article we examine virtually every aspect of rotating machinery analysis Continue Reading →
How can Coherence be measured when the excitation is Sinusoidal?
Coherence is the measure of how much of a response is due to the (known) excitation. This is easily measured when the excitation is broadband and it is possible to Continue Reading →
Dynamic Signal Processing Review: Part 1 – Digitizing and Dynamic Range
The fundamentals of signal processing are important for users of test instrumentation. To understand dynamic range, it helps to start with the basics of digitizing data. As an analog signal Continue Reading →
Modal Testing with Shaker Excitation
Modal analysis is the study of dynamic characteristics of a structure under test. The purpose is to identify the Modal parameters of the structure under test. Modes are inherent properties Continue Reading →
The Importance of Dynamic Range in Vibration Control
Discussions about dynamic range are most often concerning dynamic signal analyzers. However, a large dynamic range is perhaps even more beneficial for closed loop vibration control. In vibration control applications, Continue Reading →
Leakage and Windowing Lab
This blog will provide simple steps allowing the use of a signal generator to create and observe “leakage”, and to apply windows and observe the effects on the frequency spectrum Continue Reading →
Phase Measurement on Turbomachinery
Phase is one of five key measurements fundamental to vibration analysis on large, critical, rotating machinery. Along with vibration amplitude, frequency, form, and shaft position, phase is a vital measurement Continue Reading →
Voice Recording and Playback Feature
Voice Recording, available in Data Physics’ SignalCalc Dynamic Signal Analyzer and SignalStar Vibration Controller software as part of throughput to disk analysis, allows the user to utilize an input channel Continue Reading →