DISPERSION ANALYSIS BY A SINGLE APPLICATION OF SIMULTANEOUS TOLERANCES

Abstract

The paper presents a new and simplified method of performing a dispersion analysis. The technique consists of performing a single analysis in which appropriately scaled system tolerances are applied simultaneously in the same direction. This contrasts with the popular and well-known root-sum-square approach, which requires conducting a series of analyses in which the system parameters are varied one at a time and the results are then root-sum-squared. The difference between the proposed approach and the conventional approach is on the order of 10 percent, usually in a conservative direction. An interesting corollary of the technique is the estimation of the number of standard deviations contained in a dispersion resulting from a number of parameters being displaced from their nominal values in a worst-on-worst fashion.

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Document Details

Document Type
Technical Report
Publication Date
Feb 19, 1969
Accession Number
AD0684131

Entities

People

  • Abram Lazarus

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Air Force
  • Coefficients
  • Corporations
  • Data Science
  • Dispersions
  • Engineering
  • Errors
  • Gaussian Distributions
  • Information Science
  • New Jersey
  • Probability
  • Random Variables
  • Standards
  • Statistical Analysis
  • Statistics

Readers

  • Approximation Theory.
  • Regression Analysis.