Rapid Prototyping Journal http://www.emeraldinsight.com/1355-2546.htm Table of Contents from the most recently published issues of Rapid Prototyping Journal en-us 2009 Emerald Group Publishing Ltd. Rapid Prototyping Journal http://www.emeraldinsight.com/info/pics/journals/rpj-cover-xix.gif 120 157 A method of resin liquid-level detection and control of Stereolithography Apparatus : Table of Contents <B>Abstract:</B><BR/> <B>Purpose</B> - detect and control the liquid-level of Stereolithography Apparatus precisely.<B>Design/methodology/approach</B> - a brightness-variable laser source is adopted to remove the computational error of divider and a closed-loop circuit is set to measure the terminal voltage directly proportional to the output current of PSD. It employs a sinking-block device to control the liquid level. <B>Findings</B> - The precise calibration result of this detecting device indicates that the resolution of the liquid-level detection can reach ¡À1.5ŠÌm. <B>Research limitations/implications</B> - <B>Originality/value</B> - this sinking-block style liquid-level control device can allow for the liquid-level wave reduced from ¡À45ŠÌm to ¡À15ŠÌm. Dr. Yiqing WANG, Wanhua Zhao, Prof. Yucheng Ding, Dr. Zhongyun He, Bingheng Lu Sun Jul 26 14:15:03 BST 2009