ANALYSIS OF A PLATFORM FOR MEASURING MOMENTS AND PRODUCTS OF INERTIA OF LARGE VEHICLES

A rigid platform symmetrically supported by four sloping cables is proposed for measuring the center-of-gravity coordinates and the moments and products of inertia of large vehicles such as buses, trucks, and trailers. In addition to a torsional degree-of-freedom, the system undergoes pitch and roll motions about axes through the system instantaneous center which lies directly below the center of the platform at the intersection of the cable lines-of-action under quiescent conditons. The natural frequencies and normal modes of the freely vibrating loaded platform are used as inputs to a linearized System Identification Algorithm for computing the inertia properties of the test vehicle. Hypothetical test data generated from the Free Vibration Analysis of a sample test configuration are used to evaluate the sensitivity of the System Identification Algorithm to inaccuracies in test data or to truncation errors in computation.

• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Orne, D
  • Schmitz, T
• Publication Date: 1976

Media Info

• Features: References;
• Pagination: 10 p.

Subject/Index Terms

• TRT Terms: Algorithms; Buses; Center of gravity; Identification systems; Measurement; Measuring instruments; Moments of inertia; Systems engineering; Trailers; Trucks; Vehicles; Vibration tests
• Uncontrolled Terms: Identification
• Old TRIS Terms: Moment of inertia; Platforms; Systems science and cybernetics; Vibrational testing
• Subject Areas: Highways; Motor Carriers; Public Transportation; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00153231
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: ASME Pap 76-Aut-9
• Files: TRIS
• Created Date: Oct 13 1977 12:00AM