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  • Brake Rattle: Vibration and Noise Testing
    It is noted that sine dwell tests are a good starting point given the ease of implementation without the need for advanced shaker controllers .
  • Optical payload isolation using the Miniature Vibration Isolation System (MVIS-II)
    Sine dwell inputs at several tones between 5-100 Hz were commanded to the shaker in order to test the active controller performance.
  • Development of a Closed-Loop High-Cycle Resonant Fatigue Testing System
    For the closed-loop HCF testing, Data- Physics SignalStar Vector® (called as DP Vector software in the followings) is used as shaker controller . The resonance search and dwell test option in DP Vector software is designed to perform vibration-based... To track resonant frequencies, a sine sweep test needs to be undertaken prior to the dwell test...
  • ENHANCEMENT OF MODAL SWEPT SINE DATA BY CONTROL OF EXCITING FORCES
    A mode is tuned in with a sine dwell . The shaker output force is turned up to a desired maximum value. The con- troller is told to make a certain number of measurements over a specified decreasing force range.
  • Automotive vibration testing
    Endurance dwell testing at resonance. For example an electronic controlboard mounted to a shaker tablc can be excited by means of a sine wave sweeping through a nominal fiequency range. The use of a stroboscope synchronised with the vibration controller enables the engineer to observe any bending...
  • Vibration-induced PM noise in oscillators and measurements of correlation with vibration sensors
    The frequencies chosen for a sine dwell were 20, 40, 80, 100, 200, 500, 1000, and 2000 Hz. On the left is the vibration tab for driving shaker (the vertical rack-m controller , signal generator, and data front of operator.
  • Vibration Sensitivity of Microwave Components
    The frequencies chosen for a sine dwell were 10, 20, 30, 50, 70, 90, 100, 200, 300, 500, 700, 900, 1000, and 2000 Hz. Pictured on the left is the vibration table ( shaker ); the amplifier for driving the shaker (the vertical rack-mount system); and the controller , signal generator, and data-acquisition system.
  • Sunshield technology and flight experiment for the Next Generation Space Telescope
    During sine dwell excitation a full scan of one-half of the shield will be performed to recover velocity contours that can be interpreted as mode shapes ofthe outer membrane. ...consists of the one-tenth scale sunshield described in the previous paragraph, a shaker to provide a... The excitation system consists of an electromagnetic shaker and its associated amplifier and controller .
  • M+P International Selects the OROS Shaker Controller Solution
    M+P International Selects the OROS Shaker Controller Solution From simple random vibration for stress screening to swept sine and dwell , shock and mixed mode sine-on-random — all for advanced qualification and developmental test applications .
  • M+P International Selects the OROS Shaker Controller Solution
    M+P International Selects the OROS Shaker Controller Solution From simple random vibration for stress screening to swept sine and dwell , shock and mixed mode sine-on-random — all for advanced qualification and developmental test applications .
  • Dynamic characterization of a prototype of the Thirty Meter Telescope primary segment assembly
    To enable the shaker to produce significant mirror cell triangle motion, the triangle is supported at two... ...measured using a Polytech laser interferometer, with a model OFV-353 head and an OFV-3001 controller . An Agilent model 35670A dynamic signal analyzer was used in the step- dwell mode using sine -wave inputs.
  • Powerful Vibration Test System (07/02/2007 13:59:07)
    Updated for Windows XP®, VCS-3200 software is available for accurate sine, random, shock, resonant search and dwell , real data acquisition and playback (RDAP), random-on-random and sine -on-random capabilities. We manufacture the power amplifier, vibration controller , and sliptable & fixtures for a turnkey vibration test system... To learn more about the DSX-8000 or other electrodynamic shakers in the DSX-line, please visit...
  • Time domain sinusoidal acceleration controller for an electrodynamic shaker
    In resonance search and dwell tests, an extra accelerometer is installed on the DUT The control technique of typical industrial shaker controllers for sine testing is essentially a frequency domain approach, usually referred to as transfer function equalisation: before starting the test, the controller outputs a small broadband random excitation signal to the shaker.
  • A Modern Technique of Transportation Simulation for Package Performance Testing
    The sine dwell test is then an example of a method accelerated fatigue testing. Some of these effects are shown in Figures 3 and 4.2 Equipment used for the physical simulation comprises a shaker and a controller .