摘要
超临界精密分离装置以升压梯度△P均匀升压作为提高产品质量的重要一环.本文采用计算机和二位电磁阀组成的非线性采样控制系统,用脉宽调制方法解决了该装置中的自动升压问题.分析了自动升压控制系统的设计原理,介绍了硬件设计和软件设计要点.
The supercritical extraction device is an accurate separation device. To improve the quality of products, the device is pressurized stepwise uniformly and automatically. A nonlinear sampling control system, including a computer and a two-bit electronic value, is used. Pulse-duration modulation is used to increase pressure automatically. The construction of the control system and the principles of the hardware and software are introduced in this paper.
出处
《石油大学学报（自然科学版）》
CSCD
1992年第3期94-98,共5页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
超临界
萃取
计算机
自动控制
Supercritical extraction
Computer application
Nonlinear sampling-data,
