Aplicação de técnicas tradicionais e de séries temporais no controle estatístico da qualidade

Maria Emilia Camargo, Helio Ricardo Friedrich

Abstract


In this paper the Statistical Quality Control of the production line of three machines of MAXION company, from Canoas, RS, by the basic procedure of Shewhart, as well as the alternative techniques; technique of Cumulative Sum (CUSUM) and Model of Exponential Smoothing are presented. On synthesis, notice that the procedure of Shewhart can be used at the detection of great changes at the mean of process and the method of cumulative sum is more efficient to detect little changes at the mean of process.

Keywords


Mudanças na média do processo, Controle de Qualidade, Shewhart, Somas Acumuladas, Alisamento Exponencial.

References


ÄSTROM, K.J. (1970). Introduction to stochastic control. Mathematics in science and engeneering series. 70. Academic Press.

HUNTER, J. S. (1986). The exponentially weighted moving average. Journal of Quality Technology 18, p. 203-210.

JOHNSON, N. L. (1961). A sim pie theoretical approach to cumulative sum control chart. Journal of the American Statistical Association, 56, p. 835-840.

KIRKENDALL, N. J. (1989). The relationship between Certain Kalman Filter

Models and Exponential Smoothing Models. Quality and reability.

MAcGREGOR, J. F. (1972). Topics in the control of linear processes subject to stochastic disturbances. Ph.D. dissertation, University of Wisconsin - Madison.

MONTGOMERY, D. C. (1968). Introduction to statistical Quality Control. Wiley, New York.

MONTGOMERY, D. C. & JOHNSON, L. A. (1976). Forecasting and time series analysis. New York, McGraw-Hill.

RADHARAMANAN, R.; GALELLI, D. T. & PERES, L. L. (1994). Sensitivity analysis on the CUSUM method Amsterdan, Elsevier, International Journal of Production Economics, v. 33, p. 89 - 95.

REYNOLDS, M. R. Jr; AMIM, R. W. & ARNOLD, J. C. (1990). CUSUM chart wich variable sampling intervals. Technometrics, vol 32, p. 371 - 384.

SACCUCCI, M. S. & LUCAS, J. M. (1990). Average run lengths for exponnencially weighted moving average control schemes using the Markov chain approach. Jornal of Quality Technology, vol. 22, p. 154 - 162.

SHEWHART, W. A. (1931). Economic control of Quality of manufactured product. New York, D. Van Nostrand.

SWEET, A. (1986). Control charts using compled exponencially weighted moving averages. 11E Transaction, March, 26 – 33.




DOI: https://doi.org/10.5902/2179460X26540

Copyright (c) 1996 Ciência e Natura



Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.