Technical Articles
Spectral Dynamics, Inc. has published these technical articles:
(Industrial Controls Software)
From this Article:
Measurement instrumentation, such as SigLab™, which is tightly integrated with the
MATLAB™ environment, allows educators, researchers, and practicing engineers to easily
post-process and...
(Signal Converting)
From this Article:
This paper will discuss the effects of digital signal processing errors caused by improper
analog to digital conversion settings. Four signal types will be analyzed: overload and
underload on the...
(Vibration and Acceleration Sensing)
From this Article:
Closed-loop random Shaker Control algorithms used by SD2550 Systems employ both feed-back and
feed-forward control error correction processes. Feed-forward processing speeds the control correction...
(Vibration and Acceleration Sensing)
From this Article:
Choosing a digital Shaker Control system to operate with either an electrodynamic or hydraulic shaker,
requires careful consideration of a number of issues. In addition to cost, the two most important...
(Vibration and Acceleration Sensing)
From this Article:
Accelerometers with integrated amplifiers are a popular alternative to those requiring external
charge amplifiers. SigLab's top hatch access to the input signal conditioning circuitry makes
building...
(Signal Converting)
From this Article:
Getting the ultimate performance from a mixed signal design usually requires bench time and
honest-to-goodness test equipment. Simulation of a DSP design can provide answers to many
questions, but not...
(Data Acquisition Products)
From this Article:
This paper discusses the design methods used to create a data acquisition and control system that is capable of acquiring up to 588 simultaneous channels of synchronously sampled data....
(Nondestructive Testing Equipment)
From this Article:
Digital Fourier analyzers have opened a new era in structural dynamics testing. The ability
of these systems to quickly and accurately measure a set of structural frequency response
functions and then...
(Nondestructive Testing Equipment)
From this Article:
Digital Fourier analyzers have opened a new era in structural dynamics testing. The ability
of these systems to measure a set of structural transfer functions quickly and accurately
and then operate...
(Signal Conditioning)
From this Article:
SigLab is routinely used to estimate transfer
functions associated with dynamic systems
including control systems. The first half of
this application note addresses the task of
making accurate...
(Data Acquisition Products)
From this Article:
There is no one identification technique that
is optimal for all problems, hence the large
number of approaches available in the
MATLABÒ environment. The MATLAB
System Identification Toolbox2 and...
(Nondestructive Testing Equipment)
From this Article:
A technique for identifying the modal properties of an elastic structure in a testing
laboratory is presented. The technique is based upon the use of digital processing and the
fast Fourier transform...
(Vibration and Acceleration Sensing)
From this Article:
Structural frequency response testing, also known as "modal analysis," is becoming an
integral part of the development and testing of a wide range of industrial and consumer
products. It is an...
(Signal Converting)
From this Article:
Analog telephone lines have a wide range of
signal levels. During the ring period, signals
of 130 V peak are present. Voice levels are
on the order of a few hundred mV peak-topeak
riding on...
(Data Acquisition Products)
From this Article:
Measurement automation can prove to be a daunting task with outdated software paradigms
and "rack and stack" technology. Combining MATLAB Graphical User Interface (GUI) tools
with SigLab®...
(Data Acquisition Products)
From this Article:
This paper discusses industry standard networking and remote operation capabilities for a
Shaker Control system. The Unix-based system utilizes Ethernet local area networking with
support for TCP/IP...
(Industrial Controls Software)
From this Article:
The term "real-time" unfortunately lacks a
precise and universal meaning. In this note,
real-time indicates that the data acquisition
process in SigLabÔ will not over run the
data processing...
(Nondestructive Testing Equipment)
From this Article:
Measuring the frequency response of a linear system is a typical first step in characterizing it's
dynamic behavior. Requirements in control design and signal processing often demand
information...
(Vibration and Acceleration Sensing)
From this Article:
Modal analysis has become a frequently used method for studying the dynamic behavior of
mechanical structures. This technique is usually presented using parameters which are
defined by complicated...
(Nondestructive Testing Equipment)
From this Article:
The following are three typical audio
measurements on a stereo amplifier that will
be discussed.
· channel to channel cross talk
· harmonic distortion
· signal to noise ratio
Other measurements that...