Least Squares Balance Program for the Hewlett-Packard 48GX Calculator

Paper No. 83

Least Squares Balance Program for the Hewlett-Packard 48GX Calculator T. Feese, Vibrations, Vol. 14, No. 1, March 1998. 

The least squares method is commonly used for calculating balance corrections. In 1964, when Goodman [1] published his method, the computations had to be made on a main frame computer. The process often involved telephoning from a remote location to a computer center and waiting for results. Today, handheld calculators are capable of performing these calculations. Fielding and Mondy [2] wrote a balance program for a Texas Instruments 59 calculator in 1981. The program presented in this article is more general and performs both the plain and weighted least squares methods for n balance planes and m vibration readings. The vibration data may be taken at a number of locations and speeds. Multiple baselines can be used so that previous trial weights need not be removed.

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