| 摘要 |
PURPOSE:To stabilize a flux rate by determining preliminarily the mass and traveling speed of a hoop on the upstream side in the charging position of a flux and controlling the response time from the start of measurement until transmission of a command for adjusting the rate of charging. CONSTITUTION:A fluctuation D with respect to a standard thickness D0 is measured by a contact type thickness gage, etc. at the point A for measuring the thickness of a hoop and is inputted to a mass calculating part after analog-to- digital conversion with a low pass filter and time adjustment. Speed data S determined at the point B for measuring speed and is multiplied by a correction factor. The result thereof is inputted to the mass calculating part, by which the hoop mass MH is obtd. The flux mass MF is calculated from the data MH and a prescribed flux rate F and is inputted to a flux change-over device which charges the flux at a charging point C. The flux is charged while the time when the hoop H travels from the point A up to C and the time until the command to a feeding out device is transmitted are adjusted and therefore the flux rate F is made exact and stabilized. |
