MICROPROCESSOR-BASED ANALYSIS OF VIBRATION DATA OBTAINED DURING SHIP-BOARD TRIALS

The Authors <of, respectively, Newcastle University and BSRA> describe how a microprocessor-controlled Fast Fourier Transform system was used to analyse vibration data obtained during shipboard trials. The system was designed to be adaptable so as to allow any measurement problem requiring spectral analysis to be carried out once sufficient data have been obtained. The system configuration is shown in a block diagram, and its required capabilities are listed. The microprocessor system, also shown diagrammatically, was designed at Newcastle University. A Reticon Power Spectral Density Board was used to evaluate the finite discrete version of the Fourier Transform <DFT>, and the microprocessor controlled the total operation of the system; the microprocessor, having propeller-rpm data, could relate frequency components <detected by the Reticon> to harmonics of the rpm value. The paper gives further information on the system, briefly describes the presentation of the results obtained, and concludes that the project resulted in the design of an adaptable portable spectrum-analyser. The overall system was produced at a relatively low cost, and has proved successful for real-time analysis of trials data.

  • Supplemental Notes:
    • I.E.E. Colloquium: Microprocessors in the Marine Industry, 16 Apr. 1982 (4 pp., 2 graphs, 2 diag.)
  • Authors:
    • Kennair, J T
    • Ellis, J
  • Publication Date: 1982

Language

  • English

Subject/Index Terms

  • Subject Areas: Marine Transportation;

Filing Info

  • Accession Number: 00684120
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Aug 14 1995 12:00AM