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  • Vibration Test Chamber

VIBRATION TEST SYSTEM

WEIBER has designed customized Vibration test system to meet the generalized testing requirements of various segments of industry and research institutions like Automobile, Electronics, Telecom, Lighting,Aerospace, Packaging,DRDO and Atomic research centre.

We are manufacturer of electrical vibration series products, adopted the 'double-magnetic circuit ‘ can be completed in X, Y, Z three axis sinusoidal vibrationtest and broadband random vibration tests, to be completed by the classical (half - sine, trapezoidal, saw tooth wave) pulse and shock response spectrum test.

  • SYSTEM CONFIGURATION:
  • AIR COOLED SHAKER:
  • POWER AMPLIFIER SYSTEM
  • SLIP TABLE SYSTEM
  • HEAD EXPANDER
  • PIEZO-ELECTRIC ACCELEROMETER
  • VIBRATION CONTROLLER

System Configuration Vibration Shaker System

Air Cooled Vibration Shaker System

Features:

  1. Well-designed dynamic circle skeleton, with a higher stage axial resonance frequency.
  2. Two-magnetic circuit, magnetic flux leakage low, compact structure and rational.
  3. Rocker Rod roller bearings straight and import-orientedcomposite body stiffness Orientation, eccentric load capacity.
  4. Trunnion isolation foundation dedicated to hormone use, the installation of mobile convenience.
  5. Advanced technology move around the system to ensure that the dynamic circle of high reliability.
  6. New duct design and enhance the cooling effect.
  7. Static stiffness, dynamic stiffness of the bearing small balloon, raising the vibration table bearing capacity, improve low-frequency performance.
  8. Separately or simultaneously achieve three-axle vibration
  9. Achieve Sinusoidal, Random, Shock, and special waveform
  10. Three-dimensional synchronous and asynchronous vibration
  11. Use of special high-precision guidance to ensure adequate backward stiffness and ultra-low coupling
  12. Light armature, optimal design, strong resistance to vibration
  13. Trunnion air bag with effective pneumatic isolation
  14. Internal air bag support with large load capacity, good low-frequency performance
  15. Dual Field Coils design, low magnetic flux leakage, uniform magnetic field
  16. Can be configured with slip tables
  17. Sine, Random, and Shock tests in three orthogonal directions
  18. Highly efficient cooling blower with low noise 19. Highly efficient and reliable power amplifier
Rated maximum force 1000kgf-7000kgf
Shock force Double of sine force (triple optional)
Maximum velocity 1.8m/s (2.5m/s optional)
Maximum displacement peak to peak 51mm
Armature resonance 2800 Hz(±5% of bare table)
Frequency range 1 to 3200Hz
Vertical load support 300kg
Bare table acceleration 90 ‘g’
Armature Diameter 240 mm
Armature mass 10 kg
Power requirement 3 phase, 230V, 50Hz
Cooling system Air cooled

Power Amplifier System Vibration Shaker System

DSA power amplifier is a new generation of intelligent amplifier. It has the following advantages.

  1. Customer-Friendly operation: Use HMI panel, friendly interface and easy operation.
  2. Superior performance: Digital modulation, High switching frequency, smaller Harmonic Distortion, and Better Current Sharing
  3. Powerful: Abundant communication ports; with running log; can be remotely monitored.
  4. Safety: Software and hardware dual protections, Output Force Limit, Interlock Protection and other customer defined protections.
  5. Easy maintenance: Failure log, user can check fault log for troubleshooting, and support networked diagnosis.
Power range 0.1 to 1000 KVA
Output voltage 150 Vrms
Input impedance ≥10 k ohm
Signal to noise ratio ≥70 Db
Harmonic distortion < 1% at typical value
Input sensitivity 4 Vrms
Control method Microcontroller based
Frequency response Till 5000Hz
Medium frequency gain ≥80
Power efficiency 95%

Vibration tests in three orthogonal directions can be achieved with the connection of a slip table with an electro-dynamic shaker. A slip table uses a smaller carrier (table) to improve the quality of the overall load capacity, capable of supporting big size and large mass of the payload. A slip table can be categorized into combo and standalone types according to the way of connection. A vibration system with a slip table can complete vibration tests for a component or a whole machine in X, Y and Z directions. It can also form an integrated environmental testing system with the use of temperature, humidity test chamber. We are capable of manufacturing super large slip tables, such as the 3.5m by 3.5m etc.

Combo Slip Table

Combo slip table refers to integral design of a horizontal slip table and a shaker. They share a same pedestal.
It has a good rigidity, and is easy to install and adjust. Its installation does not need a special foundation base unless the shaker was required to start testing from 1 Hz.
A horizontal slip table with hydraulic Bearing Guiding consists of a Slip Plate (magnesium or aluminium), Drive Bar (or Bull- Nose), Granite Slab, a built-in Low Pressure Oil Source and Pedestal (or Slip Table Base). Built-in oil pump with compact structure is easy to operate.

Combo Slip Vibration Shaker System

Standalone Slip Table

Standalone type design is used widely for testing large-size and dynamically complex test samples. Its transportation, lift and loading are easy and its use is more flexible. Besides, the standalone slip tables are welcome by these customers who have a shaker without a slip table.

Standalone Slip Vibration Shaker System

BT Series - Journal Hydrostatic Bearing

A slip table with Journal hydrostatic bearings consists of a Slip Plate (magnesium or aluminium), Drive Bar (or Bull-Nose), Granite Slab, a Stand-Alone High-Pressure Oil Source and Pedestal (or Slip Table Base). Journal hydrostatic bearings can provide higher resistance to overturning moment, suitable for testing a large sample load. The more the number of hydrostatic bearings, the greater the resistance to overturning moment.

Easy to operate

Unique trunnion makes horizontal and vertical switching easier and more convenient. For medium and larger thrust shaker, worm wheel mechanism makes switching more effortless.

Plate size 800mm X 800mm (can be made till 3500mm X 3500mm on request)
OMaterial Al-Mg alloy
Horizontal guidance Hydraulic bearings
Drive bar Bull nose
Mounting inserts 100mm X 100mm matrix pattern, SS replaceable inserts.

We Supply many types of standardized head expanders, and support customization of head expander to meet customer’s demand for extended performance of shaker performance. In an actual vibration test, a test piece or fixture is often larger than the armature table of the electro-dynamic shaker, and then you need to extend the original table. Common approach is to install an auxiliary table. In the operating frequencies, the table’s weight, acceleration, amplitude uniformity and lateral movement, etc. have stringent requirements to the head expander.

  • High-quality production processes ensure a stable performance and good technical parameters.
  • Standard series of head expanders to choose from, shape (round or square), material (aluminium or magnesium) can be chosen

Accelerometers are inertial transducers that can sense mechanical motion and convert it into an electrical quantity that may be conveniently measured or recorded.

  • Capacitance: 700pF
  • Type: charge type sensor
  • Frequency range: 3-7kHz
  • End connector- 10-32(microdot) coaxial jack
  • Connecting cable: 5m length, microdot BNC type connector, low noise

Hardware(VR9500 Revolution Ethernet crossover cable)

Vibration Controller Vibration Shaker System

ANALOG CHANNELS 1 to 32 simultaneous channels. All 32 channels can be used for control or monitor. All are configurable single ended or differential with 200k Ohm impedance. The VR9500 Revolution features a 108 kHz sample rate. Setup allows per channel selection of transducer sensitivity, coupling (AC or DC), accelerometer constant current supply (4mA), TEDS transducer interface, and a unique DC offset that allows measurement to true DC with constant current type accelerometers. Custom units can be defined for other sensor types.
INPUT CHANNEL EXPANSION Can be expanded from 1 to 32 total analog inputs by adding signal processing modules. Each module contains 4 inputs. Additional modules connect to the PC via a network switch.
PC CONFIGURATION NT/2000/XP/Vista/Windows 7 Operating system and an Ethernet port are the only requirements. Microsoft Word and Excel are recommended.
FRONT END SIGNAL PROCESSING BOX Rear pluggable terminal block enables the digital level signals –8 inputs and 8 outputs –to be interfaced with your product and other systems. Used for remote start/stop/pause/continue and other functions such as close/open control loop, manual/auto schedule, and enable/disable aborts.
DIGITAL INPUT/OUTPUT Output and COLA output, connection to Ethernet port, and a terminal block of digital I/O lines.
OUTPUT CHANNELS One analog output (drive) standard; COLA output is standard with SineVIEW
ELECTRONICS PER CHANNEL Differential amplifier. Configurable as differential, single ended, AC or DC, anti-aliasing filters, and 24-bit Analog to Digital converter (ADC)
RESOLUTION 24-bit
PHASE MATCH BETWEEN SIGNALS Within +/- 1 degree from DC to 10,000 HZ
SIGNAL-TO-NOISE RATIO > 100 dB
TOTAL HARMONIC DISTORTION < -105 dB
FREQUENCY RANGE Sine, Random, Shock, and F.D.R. control up to 4,990 Hz. (High Frequency Option extends the limits to 32 kHz). An export license is required for Random and F.D.R. High Frequency software.
DYNAMIC RANGE 135 dB input signal separation
CHANNEL CROSS-TALK < 110 dB
FILTERING An analog multiple pole filter plus a digital filter

Software packages

1. Sine view

Sine View Vibration Shaker System

  • Frequency Range

    : DC to 32,000 Hz. Up to 4,990 Hz standard; High Frequency option extends to 32,000 Hz. Sample frequency 10,000 to 108, 000 Hz.

  • Sweep Rate
    Linear from zero to 6,000 Hz/min or logarithmic from zero to 100 octaves/min.
  • Control Methods
    Single channel, average, extremal or manual.
  • Control Dynamic Range:
    ≥130 dB
  • Level Types:
    Sweep from frequency A to frequency B, sweep back-and-forth through profile, constant frequency, wait for operator intervention, wait for timed interval, resonance table generation & dwell frequency selection (optional), level looping (with nesting up to 10 levels), phase tracking to hold resonance frequency.
  • Breakpoints:

    Up to 1,000 amplitudes of A, V, or D, constant or slope changes at defined frequencies.

  • Drive Frequency Resolution:
    As fine as 0.000001 Hz.
  • Loop Time:
    5 msec typical
  • Manual Control:
    Limits both the drive output and the control signal on start up to a user controlled level. Normal test operation will commence only after the limited start up is verified by the user.
  • 2. Random view

    Random View Vibration Shaker System

  • Frequency Range:
    DC to 32,000 Hz, user selectable. Up to 4,990 Hz standard; High frequency option extends to 32,000 Hz (requires export license)
  • Spectrum Lines:
    50 – 26,000 lines.
  • Measurement Strategies:
    Input channels can run individually, or combined by minimum, maximum, or average.
  • Control Dynamic Range:
    100 dB typical, 90 dB closed loop.
  • Breakpoints:
    Up to 13,000 f frequency /amplitude breakpoints with slope (dB/octave) automatic calculations.
  • Measurement Strategies:
    Input channels can run individually, or combined by minimum, maximum, or average.
  • Profile View:
    The desired profile is graphed and updated as you build it. The test maximum peak acceleration, peak velocity, and peak to peak displacement values are displayed. Values are highlighted in red if they exceed the shaker parameter values selected.
  • Drive Clipping:
    Clipping at any level 1 sigma or greater.
  • Manual Control:
    Limits both the drive output and the control signal on start up to a user controlled level. Normal test operation will commence only after the limited start up is verified by the user.
  • Test Documentation:
    Extensive reporting capabilities.
  • Level Types:
    Scale entered profile by % level, by dB level, or to an RMS acceleration level. Wait for operator intervention, Wait for a timed interval, Level loop (with nested looping up to 10 levels), Auto reporting and more.
  • Number of Levels:
    200 levels
  • Degrees of Freedom:
    2 – 1,000 degrees of freedom.
  • 3. Shock view

    Shock View Vibration Shaker System

  • Classical Pulse Types:
    Half-sine, haversine, initial and terminal peak saw tooth, triangle, rectangle, and trapezoid.
  • Pulse Duration:
    From 1 mS to 60 seconds.
  • Sample Rate:
    100 Hz to 108,000 Hz. (High Frequency option required above 4,990 Hz.
  • Frame Size:
    128 to 20,000 points or automatically optimized.
  • Loop Transfer Function:
    Automatic calculation during pre-test or, for no pre-test start up, recall a drive from disk.
  • Pulse Compensation:
    pre-pulse and post-pulse compensation is performed. Double sided for minimum displacement and full use of shaker stroke. Choice of smoothed or rectangular compensation pulses. Pre-pulse and post-pulse amplitudes settings are a percentage of the demand peak acceleration.
  • Engineering Units:
    English, SI, metric, mixed, user-defined.
  • Filtering:
    User specifies desired frequency for low pass filtering applied to the demand waveform, output drive signal, and input channels.
  • Delay between Pulses:
    User set from 0 to 1,000 seconds.
  • 4. F.D.R View

    Fdr View Vibration Shaker System

    F.D.R.VIEW (or F.D.R.) provides the capability to replicate your field acceleration measurements and reproduce them on the shaker in the test lab.

  • DATA IMPORT
    Import waveforms from data recorders using an analog input, or input digital wave or text files. Waveforms can be up to 45 hours long at a 26,000 Hz sampling rate or up to 1 yearlong at a 100 Hz sampling rate
  • EQUALIZATION
    The controller automatically equalizes the response of the shaker/fixture/product prior to running the test. This equalization can be memorized and stored with the test to quickly start a test at a full equalized level. The frequency range of the output signal is configurable, and a frequency band can even be notched out of the signal.
  • MULTIPLE SHAKERS
    From 1 to 4 control loops can be run simultaneously to independently control up to 4 shakers with 4 separate waveforms.
  • EDITVIEW
    1This package links with F.D.R.VIEW, Recorder VIEW, and Random Import. Edit VIEW provides a handy tool to examine and edit your acceleration and other signal waveforms. This feature is standard with F.D.R. and Recorder VIEW.
  • 5. Recorder view

    Recorder View Vibration Shaker System

  • Channels :
    1 –32 simultaneous channels
  • Voltage Range :
    +/- 10 Volts peak
  • Resolution :
    24-bit
  • Sensor Power:
    Constant current supply (4mA) standard, can be enabled or disabled as needed.
  • Sensitivity:
    User selectable mV/G accelerometer sensitivity, or use any input unit when combined with the Alternate Units feature.
  • Frequency Range :
    DC to 32,000 Hz
  • Sample Rate :
    100 Hz to 108,000 Hz
  • Sensitivity:
    User selectable mV/G accelerometer sensitivity, or use any input unit when combined with the Alternate Units feature.
  • Dynamic Range :
    120 dB typical
  • Sensitivity:
    User selectable mV/G accelerometer sensitivity, or use any input unit when combined with the Alternate Units feature.
  • Signal-to-noise Ratio:>
    :>100 dB (from DC to 10,000 Hz measured with half-full-scale sine waves).
  • Interchannel Isolation :
    :>110 dB
  • Sensitivity:
    User selectable mV/G accelerometer sensitivity, or use any input unit when combined with the Alternate Units feature.
  • Data Format:
    Binary file format, data samples stored with 32-bit floating point numbers.
  • Maximum Samples:
    4 billion per channel.
  • Import Formats :
    Convert from Windows .wav files, .vfw files, ASCII text (.txt) files, RPC and Universal File Format (.uff) files.
  • Export Formats :
    Convert to .uff files or ASCII text (.txt) files
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