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  • Practical experiences in primary vibration calibration using laser vibrometry: measurement uncertainties in wide-frequency-range applications
    If vibration sensors of the charge type or CCLD type (constant current line drive) shall be primary calibrated, the accuracy of the electrical measurement is as important as that of the vibrometer.
  • HCI International 2013 - Posters’ Extended Abstracts
    Vibrations were measured using a conditioning amplifier(2-channel (single probe) Intensity Conditioning Amplifier, Type 2693-0S1, B&K Co., Ltd), accelerometer (Miniature tear-drop CCLD accele- rometer, Type 4517, B&K Co., Ltd), and an A/D converter (PowerLab/4ST , ADINSTRUMENTS, Inc.). The sensor was situated 2 cm from the tip of the ferrule (Fig.1).
  • Special Topics in Structural Dynamics, Volume 6
    All the PiezoStar® accelerometers are IEPE sensors with a constant current line drive ( CCLD ) concept. Vibration testing under temperatures, such as in combined climate and vibration testing in environmental simulation, product durability …
  • Manual of the Mess- and automation technique in the production
    The sensors with this integrated charge conversion are spread furthest and denoted combining ever more often as CCLD (Constant Current Line drive)-types. … sensors find the application in particular in the region of the shock and vibration measuring technique between …
  • Primary Vibration Calibration by Laser Interferometry: Initial Experiences with a New Calibration System
    … of frequency, gain and excitation and for all types of electrical inputs, such as charge sensors, voltage sensors (e.g. sensor with external signal conditioner) and current-driven voltage sen- sors (e.g. constant current line drive ( CCLD )), that an absolute uncertainty … … the relevant signal path at selected frequencies under identical electrical conditions before a vibration calibration run is …
  • Developments and Innovations
    … vibration analyser at a low cost – the PULSE Lite 2.0 Pocket Noise and Vibration Analyser. It has a high reso- lution (24 bit) input with two channels of CCLD condi- tioning to … Pressurex is a thin flexible sensor that shows contact force distribution by changing colour.
  • Piezoelectric Accelerometers with Integral Electronics
    4526— CCLD accelerometer. Specifications. http://www.bksv.com/Products/transducers/ vibration /accelerometers/accelerometers/4526?tab¼specifications 39. … supply, temperature range, and size are key factors providing the performance characteristics required for an IEPE sensor .
  • Dynamical simulation of E-ELT segmented primary mirror
    Ccld … the observable and the non-observable parts for the modal control strategy (edge sensor loop) for a … … g. hard or soft options, different type of perturbations such as wind load, vibration , actuator noise and …
  • Damage detection in structures using a transmissibility‐based Mahalanobis distance
    … sensors, and sample matrix means a matrix composed by the transmissibility from m sensors , in the frequency … Beam in transverse vibration . In terms of data acquisition, the responses were measured by 23 piezo- electric CCLD accelerometers (Brüel & …
  • Dynamic Behavior of Materials, Volume 1
    17 On the Use of Piezoelectric Sensors for Experimental Modal Analysis First, the characterization methods and free mass vibration tests will be detailed, then the results will be … Two piezoelectric CCLD accelerometers (type 4507B, Bruel and Kjae¨r) were used to measure the input acceleration of …