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Random Test
●The method of control:
Based on the impedance matrix compensation decoupling control, it can accurately control the coherence and the phase between the reference spectrums, achieve online control error correction, to adapt the system characteristics nonlinear changes caused by different kinds of situation.
●Performance:
Dynamics Range: >90dB
Control Accuracy: Each channel PSD control precision is less than±1dB, the phase error between control channels is less than ±2 , Coherent error is less than ±0.1.
Typical loop time: 100 ms
Degrees of freedom: 4~12736
Frequency range: DC~5 kHz, Extendable up to 20 kHz.
Spectral Resolution: 100, 200, 400, 800, 1600, 3200, 6400
●Incentive Group
The number of incentive group: 2~16 incentive group, each group corresponds to a reference PSD spectra, the relationship between any two incentive groups can through the phase spectrum and coefficient to determine. Every incentive group contains at least one input control channel and one output channel. Any input channel can be used as a control channel, when the same incentive groups have multiple control channels, there has to be a master control channel.
The control strategy: The weighted average, max., mini.
Control mode: Coupling/ uncoupling reference spectrum
The reference spectrum: Define each reference spectrum PSD level, Define triangle phase and correlation coefficient
Alarm/Abort: Relative to the reference spectrum tolerance band in dB
The channel limit: The PSD limit / RMS limit, In order to prevent the excessive test. Any monitoring channels can be used as a limit.
The security check: Vibration Shaker limit, loop check, RMS interrupt, channel limit, alarm/ abort check, driving restrictions
●Display/ Saving:
Test display: Display test status and running state information
Display window: 2 d / 3 d showing, windows number is infinite, can be arbitrarily added; the number if signals in pane is infinite.
Data storage: engineering test storage, the default parameters, manual or automatic storage signal/ window/ screen, automatic storage of test data, real-time data recording and playback analysis
Test Report: Word, PDF
Sine Test:
●The method of control:
Based on the impedance matrix compensation decoupling control, it can accurately control the coherence and the phase between the reference spectrums, achieve online control error correction, to adapt the system characteristics nonlinear changes caused by different kinds of situation.
●Performance:
Dynamics Range: >90dB (within the full range), by 0.05 dB magnitude incremental (step) control, its amplitude in ramp between two points.
Driver Output: With high precision compensation algorithm in real time in order to produce high quality digital sine signal, and achieve low distortion and smooth phase control.
Amplitude Control Accuracy: Adopting 25% tracking filter, in loct/ min sweep test, the amplitude control precision is less than±1dB
Phase Control Accuracy: Adopting 25% tracking filter, in loct/ min sweep test, the phase control precision is less than ±1dB.
Closed-loop time: 5ms
Frequency Resolution: 0.000001Hz
Harmonic Distortion: <-100dB
Frequency Range: 1Hz to 5,000Hz, high frequency option extends to 20 kHz and low frequency option starts from 0.01Hz
Spectral Resolution: 512, 1024, 2048, 4096, 8192
Frequency sweep way: Linear/ logistic
Tracking filter: The proportion of broadband or fixed broadband
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●Incentive group:
The number of incentive group: 2~16 incentive group, each group corresponds to a reference PSD spectra, the relationship between any two incentive groups can through the phase spectrum and coefficient to determine. Every incentive group contains at least one input control channel and one output channel. Any input channel can be used as a control channel, when the same incentive groups have multiple control channels, there has to be a master control channel.
The control strategy: The weighted average, max., mini.
The reference spectrum: Define each reference spectrum PSD level, Define triangle phase and correlation coefficient
Alarm/Abort: Relative to the reference spectrum tolerance band in dB
Input channel type: Control, Measurement, Disabled
The channel limit: The PSD limit / RMS limit, In order to prevent the excessive test. Any monitoring channels can be used as a limit.
The security check: Vibration Shaker limited, Opened-loop check, Channel limiting, Control signal loss, alarm/ abort check, driver restriction.
Classical Shock Testing
●The method of control:
Based on the impedance matrix compensation decoupling control, it can accurately control the coherence and the phase between the reference spectrums, achieve online control error correction, to adapt the system characteristics nonlinear changes caused by different kinds of situation.
●Incentive Group:
The number of incentive group: 2~16 incentive group, each group corresponds to a reference PSD spectra, the relationship between any two incentive groups can through the phase spectrum and coefficient to determine. Every incentive group contains at least one input control channel and one output channel. Any input channel can be used as a control channel, when the same incentive groups have multiple control channels, there has to be a master control channel.
The security check: Vibration Shaker limit, Opened-loop check, RMS Abort, Abort Check, Driver limit
●The reference spectrum:
Target spectrum: each target spectrum set respectively. To set target waveform and compensation, making them waveform conform to the requirements of the vibration shaker limits
Pulse Type: half-sine, Initial and final peak Saw Tooth, Rectangle and Trapezoid, Bell, Triangle
Pulse polarity: Positive pulse, negative pulse
Pulse Duration: From 0.05ms to 100,000ms
Pulse amplitude: According to needs, user input pulse amplitude size
Criterion: MIL-STD-810, ISO, User defined
Sampling Rate: 20 to 51.2 kHz, automatically adjust according to the pulse width and compensation
Block Size: 256 to 16384, automatically adjust according to the pulse width and compensation
●Pulse compensation:
Compensation waveform: Half sine wave, rectangular wave, and rectangular harmonic
Compensation type: Before and after the pulse compensation, before-pulse compensation, after-pulse compensation
Compensation method: double-side displacement, single-side displacement
Before-pulse compensation amplitude: 1-100%
After-pulse compensation: 1-100%
●Shock response spectrum analysis:
SRS type: The max. Absolute value, Max. Positive, Max. Negative peak
Analysis frequency range: Reference frequency and SRS analysis frequency range can be set up
Octave resolution (1/N): 1~48
The damping ratio and Q value: settable
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