Chat with us, powered by LiveChat

Careers | Training | Resource!!!

arrow_back_ios

Main Menu

See All Products See All Knowledge See All Services & Support See All Solutions See All About See All Contact Us See All Demo See All Load cells title
arrow_back_ios

Main Menu

See All Acoustic End-of-Line Test Systems See All DAQ and instruments See All Electroacoustic application See All Software See All Transducers See All Vibration Testing Equipment See All Electroacousticsb - OLD unpublished See All Academy See All Resource Center See All Services See All Support See All Applications See All Industries See All Our Business
arrow_back_ios

Main Menu

See All Actuators See All Combustion Engines See All Durability See All eDrive See All Transmission Gearboxes See All Turbo Charger See All DAQ systems See All High precision and calibration systems See All Industrial electronics See All Power Analyser See All S&V Handheld devices See All S&V Signal conditioner See All Accessories for electroacoustic application See All DAQ See All Drivers API See All nCode - Durability and Fatigue Analysis See All ReliaSoft - Reliability Analysis and Management See All Test Data Management See All Utility See All Vibration Control See All Acoustic See All Current / voltage See All Displacement See All Load cells See All Pressure See All Strain Gauges See All Torque See All Vibration See All Temperature See All LDS Shaker Systems See All Power Amplifiers See All Vibration Controllers See All Accessories for modal exciters See All Test Solutions See All Training Courses See All Primers and Handbooks See All Calibration See All Installation, Maintenance & Repair See All Support Brüel & Kjær See All Acoustics See All Asset & Process Monitoring See All Electric Power See All NVH See All OEM Custom Sensors See All Structural Integrity See All Vibration See All Automotive & Ground Transportation See All Business Ethics
arrow_back_ios

Main Menu

See All CANHEAD See All GenHS See All LAN-XI See All MGCplus See All Optical Interrogators See All QuantumX See All SomatXR See All Fusion-LN See All Accessories for industrial electronics See All Handheld Software See All Accessories for S&V handheld devices See All BK Connect / PULSE See All API See All Microphone sets See All Microphone Cartridges See All Acoustic calibrators See All Special microphones See All Microphone Pre-amplifiers See All Sound Sources See All Accessories for acoustic transducers See All Experimental testing See All Transducer Manufacturing (OEM) See All Accessories for strain gauges See All Non-rotating (calibration) See All Rotating See All CCLD (IEPE) accelerometer See All Charge accelerometer See All Impulse hammers / impedance heads See All Cables See All Accessories See All Calibration Services for Transducers See All Calibration Services for Handheld Instruments See All Calibration Services for Instruments & DAQ See All Resources See All Electroacoustics See All Environmental Noise See All Noise Source Identification See All Product Noise See All Sound Power and Sound Pressure See All Vehicle Pass-by Noise See All Production Testing and Quality Assurance See All Machine Analysis and Diagnostics See All Structural Health Monitoring See All High Voltage See All OEM Sensors for the Agriculture Industry See All OEM Sensors for Robotics and Torque Applications See All Structural Dynamics See All Material Properties Testing
RANDOM VIBRATION CONTROL

Random

A vibration controller feature used within a closed-loop test system to produce a random signal that simulates a broad range of real-world operating environments.

img

Random

expand_more
chevron_left
chevron_right

The random vibration (or excitation) test profile simultaneously excites all resonant frequencies of any given payload, thus it is well suited for product qualification tests and for characterizing a structure’s dynamics. A fast loop time is important for high accuracy, and so are multi-channel control, notching, and real-time analysis.

USE SCENARIOS

  • Simulation of vibration experienced by components and assemblies used in automobiles, military vehicles, aircraft and space vehicles
  • Replication of field measurements
  • Production testing, stress screening and prototype testing
  • Product qualification to MIL-STD, DIN, ISO, IEC and other standards

CHARACTERISTICS

A random test entails configuring the parameters via the host PC by entering a chosen PSD (power spectral density) into a simple breakpoint table, or by importing previously-gathered field data in Microsoft Excel® CSV (comma-separated values) format. The breakpoint table consists of PSD amplitudes and associated frequencies, plus slope segments. The frequency range is specified, say from DC to 4800 Hz.

When slopes are used, the table automatically calculates crossover frequencies and PSD amplitudes. As the breakpoint table is created, a plot displays the profile. The overall RMS (root mean square) value, maximum peak velocity, and maximum peak-to-peak displacement for the full-level test are automatically displayed.

A spectral resolution in terms of FFT (Fast Fourier Transform) lines will be specified. The greater the number of lines, the smaller the frequency delta between each line. For example, 1600 lines with a frequency range of 4800 Hz gives a resolution of 3 Hz. There may be an option to increase the spectral resolution at the expense of the number of input channels.

A dynamic control range will be specified, say 90 dB. This defines the maximum slope, or rate of change, of the control output. A higher value will yield a more severe test of the payload.

To prevent malfunctions or damage to the device under test and to the equipment, if the dynamic demands of the test exceed the shaker system’s limits, the user will be warned automatically.

Modern Slavery Statement     Imprint    Cookie Policy    Privacy Policy    Sitemap    Ethical Business

 

© 2025 Hottinger Brüel & Kjær

 

 

close
nCode logo
Graphics Brand

We haved moved ${referer} to www.hbkworld.com

 

This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.

close
ReliaSoft-Logo-webp
Graphics Brand

We haved moved ${referer} to www.hbkworld.com

 

This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.

close
Prenscia HBM-Logo rgb
Graphics Brand

We haved moved ${referer} to www.hbkworld.com

 

This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.

close
HBM-Logo blue rgb
Graphics Brand

We haved moved ${referer} to www.hbkworld.com

 

This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.

close
logo of Brüel & Kjær (BKSV), experts of sound and vibration measurements from HBK
Graphics Brand

We haved moved ${referer} to www.hbkworld.com

 

This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.