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JAGUAR - Shock Synthesis
Create arbitary
waveforms to match your SRS and your table capability.
Provides the ability to enter a Shock Response Spectrum (SRS)
into a table. JAGUAR then permits the generation of an unlimited
number of waveforms that will result in the reference SRS being
optimized and the resulting time domain waveform compensated to
permit replication on a shaker table. JAGUAR Shock Synthesis
permits the operator to easily create new waveform tables.
Simply press a button and a new table will be created with
automatic convergence to the specified percentage of error
defined by the operator.
Performance Begins with HARDWARE.
To ensure the highest level of performance in accuracy of
measurement, signal generation, computation and analysis
requires a hardware platform designed for the mission.
JAGUAR employs state-of-the-art Sigma/Delta analog-to-digital
converters with multiple sample rate capability and integral
Finite Impulse Response (FIR) filters. Coupled with analog 6
pole Butterworth filters, this assures that measurements will
have no aliased signals to invalidate the data. This is critical
due to the transient nature of the data. All decisions and
understanding of structural response may originate from one time
record, generated by one pulse. JAGUAR filters differ from
design perfection by less than +/-1 degree across the entire
frequency range of 0 to 20 kHz. Channel-to-channel phase
matching differs by no more than +/-2 degrees across the same
frequency range. The result is extraordinary accuracy. The
filter design is optimized for transient operations so that the
inherent ringing characteristic of all filters is absent in the
operating range for all response data for mechanical systems.
This means your data is NOT altered by a filter oscillation that
alternately adds and subtracts energy from the actual
measurement before you see it. This means the data you analyze
with JAGUAR Shock Synthesis will always be accurate.
Automation Provides Ease of Use and High Performance.
Waveform generation tables greatly enhance the capability of the
laboratory to iterate upon the desired waveform being generated.
Each waveform will have its own Peak SRS G value as well as its
own Table G value. Auto Synthesis to match the SRS is a valuable
tool to ensure that the selection of wavelets used in the
waveform has the appropriate delays, amplitudes and frequency
content to ensure that the SRS will be properly matched by the
waveform being created. In addition to the automatic mode for
Synthesis, the operator may also intervene and make manual
changes to the composition of the waveform. In this way unique
operator knowledge and skill is not locked out of the test
equation.
User Selectable:
WEIGHTING FOR AVERAGING – assists user to control statistical
confidence during control.
WAVEFORM TREND REMOVAL – permits the automatic removal of DC.
FEEDBACK GAIN – SRS processing permits user involvement
assuring control stability in non-linear environments.
INITIAL EXCITATION – testing has shown that computation of
system ID may be affected by the type of initial excitation
used; JAGUAR permits operator discretion in this choice.
SAMPLING RATIOS – the degree to which the user chooses to
over-sample the data affects accuracy of peak measurement and
identification;conversely, it slows the process by acquiring
larger block sizes with higher sample rates. JAGUAR ’s
interpolation feature allows smaller block sizes while
maintaining the effect of higher sample rates.
SRS PROCESSING - permits the user to determine where the pulse
energy will be located within the time buffer.
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