摘要
选择性激光烧结 (SelectiveLaserSintering,SLS)是快速成形技术的一种 ,它是集CAD、CNC、激光以及材料科学于一体的新型技术。在整个成形过程中温度是影响制件精度、强度的重要因素之一。过去我们采取了PWM、PID等控制方法 ,但由于控制对象的纯滞后性效果都不明显 ,为此 ,我们采用了模糊控制方法 ,取得较好的效果。本文介绍华中科技大学HRPS—ⅢA系统的温度控制软硬件的开发。
Huazhong University of Science and Technology developed a selective laser sintering(SLS) system HRPS-ⅢA as shown in Fig.1. In this paper, we present HRPS-ⅢA' s temperature control system. Fuzzy control algorithm is used to assure high stability and real-time control. VxD(virtual device driver) is used for data stream structure in software design to make the function modules independent of each other, which achieves multi-level opnness from man-machine interface to control kernel, and also meets the requirement of the rapid development in the RP(Rapid Prototype) domain. Satisfactory results are obtained with this system.
出处
《机械科学与技术》
CSCD
北大核心
2004年第2期234-237,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
高等学校博士学科点专项科研基金 (19990 4873 )资助
