K2 Sprint - Vibration Test Systems - IMV CORPORATION

 AMERICAS

PRODUCTS

Case Study

Software

SINE

  Specifcations
Control Algorithm Continuous closed-loop control of true rms level
Control Frequency Range 0.1-20,000 Hz
Control Dynamic Range More than 114 dB
Operation Modes 1) Continuous sweep, Spot, Manual
2) Closed-loop, Open-loop
Measurement Method Average, RMS, Tracking
Multiple-Channel Control Modes Average control, Maximum control, Minimum control
Input Channels Maximum 64

*Specifications may be affected by other conditions

Optional software Outline
R_DWELL: Resonance Dwell Resonance is detected by measuring the phase difference between the control point and the response signal from a resonant part of the item under test. The test frequency is controlled to maintain resonance as the structure fatigues. After holding at the resonance for a pre-defined duration, sweeping can be resumed until the next resonance is detected.
A_DWELL: Amplitude Dwell A transmissibility plot is taken from two points on the structure under test and resonances listed. A sine test can then be run at each resonant frequency, with tracking of the resonance by either amplitude or phase.
LIMIT CONTROL Response channels can be specified as limit control channels. If the level on a limit control channel is likely to exceed the specified limit, it is reduced accordingly.
Multi Sweep Sine A traditional wide-band sine sweep is divided into several narrower-band sine sweeps which, when added together, combine to cover the original wide band. Running the narrow band sweeps in parallel significantly reduces the test time required.

RANDOM

RANDOM

  Specifcations
Control Algorithm Closed-loop control of PSD within each spectral line
Control Frequency Range 20 kHz maximum
Number of Control Lines
Maximum 25,600 lines
Control Dynamic Range More than 94 dB
Loop Time 200 ms (fmas=2,000 Hz, at L=400 line)
Multiple-Channel Control Modes Average control, Maximum control, Minimum control
Input Channels Maximum 64

*Specifications may be affected by other conditions

Optional software Outline
SOR: Sine on Random Random vibration and sine vibration frequencies are combined. Sine vibration can be swept.
ROR: Random on Random Broad-band random combined with sweeping or non-sweeping narrow-band random overlaid.
Extended ROR The extended ROR makes it possible to operate an ROR test with greater freedom when defining separate NBR references.
PSD LIMIT: PSD limit control Response channels can be specified as limit control channels. If the PSD on a limit control channel is likely to exceed the specified limit, it is reduced over that range of frequencies to keep within the limit level.
Non-Gaussian A vibration testing method which precisely reproduces non-Gaussian vibrations, for example transportation vibrations, with large spikes.
Soft-Clipping A clipping function that can reduce the peak value of the output voltage without affecting control performance.

SHOCK

  Specifcations
Control Algorithm Finite-length waveform controlled by feed forward method
Control Frequency Range Maximum 20,000 Hz
Number of Control Lines Maximum 25,600 lines
Control Dynamic Range More than 84 dB
Type of Reference Waveform Classical shock waveform (Half-sine, Haversine,
Saw-tooth, Triangle, Trapezoid etc.), Sine beat waveform, measured waveform, etc.
Input Channels Maximum 64

*Specifications may be affected by other conditions

Optional software Outline
LONG WAVEFORM The standard length of a reference waveform is 16 K points. This can be increased to 200 K points by adding the LONG WAVEFORM option. At a sampling frequency of 512 Hz for example, this produces approximately 6.5 minutes of waveform, compared to the standard length of approximately 30 seconds.
MEGAPOINT A further increase in waveform duration can be obtained by adding the MEGAPOINT option to the LONG WAVEFORM option. This increases the record length to 5,000 K points, about 163 minutes at 512-Hz sampling rate.
SRS: Shock Response Spectrum SRS (Shock Response Spectrum) can execute a test in which the test condition and evaluation are conducted not based on the waveform itself, but on SRS analysis. With standard shock test selected, SRS analysis of the response waveform is also possible.

BMAC

  Specifcations
Control Algorithm Finite-length waveform controlled by feed forward method
Control Frequency Range Maximum 20,000 Hz
Number of Control Lines Maximum 25,600 lines
Control Dynamic Range More than 84 dB
Type of Reference
Waveform
Classical shock waveform (Half-sine, Haversine, Saw-tooth, 
Triangle, Trapezoid etc.), Sine beat waveform, measured waveform, etc.
Length of Reference
Waveform
Maximum 5,000 k points
Input Channels Maximum 32
Output Channel Maximum 32

*Specifications may be affected by other conditions

Optional software Outline
ENDURANCE2 A drive file created in K2/BMAC can be used to run a durability test. Multiple drive files may be combined to create an equivalent of complex real-life vibrations.

Multi RANDOM

Main Enclosure
Control Algorithm
(Three modes of control)
1) PSD of random signal closed loop control by spectrum density for each frequency segment
2) Real-time waveform controlled by feed forward method
3) Monitoring and minimizing of cross-axis components
Control Frequency Range Maximum 10,000 Hz
Number of Control Lines
Maximum 3,200 lines
Control Dynamic Range More than 90 dB
Loop Time 450 ms
(3-input, 3-output control, 120 DOF, fmax = 2,000 Hz, L=200 line cross-talk information averaging times = 8 times/loop)
Multiple-Channel Control Modes Average control, Maximum control, Minimum control
Input Channels Maximum 64 (Maximum of 32 control channels)
Output Channel Maximum 16

*Specifications may be affected by other conditions

Optional software Outline
PSD LIMIT If a response point is specified to be a limit control channel, the PSD won’t exceed the specified PSD level in the test.
Non-Gaussian A vibration testing method which precisely reproduces non-Gaussian vibrations, for example transportation vibrations, with large spikes.

Multi SINE

  Specifcations
Control Algorithm
(Three modes of control)
1) Amplitude: Continuous closed-loop control of true rms level
2) Phase: Real-time waveform controlled by feed forward method
3) Monitoring and minimizing of cross-axis components
Control Frequency Range 0.1-10,000 Hz
Frequency Resolution Better than 10-4 of frequency
Control Dynamic Range More than 114 dB
Operation Modes 1) Continuous sweep, Spot test
2) Control and monitoring of various physical units
Estimation Method Average, RMS, Tracking
Multiple-Channel Control Modes Average control, Maximum control, Minimum control
Input Channels Maximum 64 (Main control channel is Maximum 32 Chs)
Output Channel Maximum 16

*Specifications may be affected by other conditions

Optional software Outline
LIMIT CONTROL If a response point is specified to be a limit control channel, the level of that response point will not exceed the level specified in the test.