Abstract
Automatic control of porcelain wetness which is indispensable to computerize porcelain forming was studied.A method of quantification of wetness using image processing was applied to the experimental system.Automatic control of wetness was realized by repeating water supply and condensation until the wetness index increased above the desired value.The water supply could easily become excessive or inadequate following slight changes in the quantity of porcelain powder or evaporation speed when the supply was not automatically controlled.With automatic control, the wetness of formed porcelain could be maintained within an acceptable range.Movement of the work piece caused decreases in the wetness index and excessive water supply succeedingly, but the influence was reduced by refocusing the lens of the camera with every move.From the results of automatic forming, it was found that the system could be so improved as to be able to form well at a lower wetness index.The control of porcelain wetness should be subdivided into overall wetness and local wetness at the site where the porcelain powder is added.
