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

?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