抄録
We will propose improved method to measure the macro shape of long object moving with fluctuations.
There already exists similar method, but it has fatal defects. The unsuitable data processing of existing method often leads the macro shape of obtained result far from the reality.
So, we have established improved method to remove above mentioned defects of existing method, and successfully improved the accuracy of measured results.
The system of improved method as well as existing one consists of three distance sensors arranged in a row not necessarily at regular intervals along the transfer line. As the object proceeds, the distance values to the moving object are acquired simultaneously by each sensor. At every occasion of data acquisition, we will obtain set of three equations consist of acquired data, angular and to & fro elements of fluctuations as unknowns and also unknown coefficients of lower powered function to represent the macro shape of long moving object.
After completing data acquisition over the whole body of moving object, all the sets of equations are processed by the computer using Least Squares Method to obtain the macro shape, in other words, to decide the values of coefficients of lower powered function.
The main feature of our proposal is to improve the way to solve the simultaneous equations and successfully to remove above mentioned defects of existing method.
The favorable characteristics of improved method are that it can not only cancell the effects of fluctuations but also provide us with undeformed macro shape of obtained result.
