Measurement of Straightness by Means of Overlap Coupling of Data : Vibration, Control Engineering, Engineering for Industry

Abstract

This paper aims to develop a practical method for making possible a wider range measurement of straightness, with good accuracy, even when using a handy apparatus. An analysis besed on the least square method is presented for the data coupling method employed, and basic matters concerning data treatments, error variances in measurement and the improvement of measuring accuracy are considered. A simple experimental apparatus aided by a personal computer is used for actual measurements. Experiments bring about good results in the sense that the measuring operation based on the overlap coupling of data can be successfully made, and that measured values seem to have fairly good accuracy. Consequently, it is shown that the method employed has practical usefulness.