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  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  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.