WU Cuiping1， SHEN Yijun1， PU Kunwei1， DU Pengfei1，DU Yuansheng1， ZHENG Shuilin1， LUO Jianjun2
(1. School of Chemical & Environmental Engineering, China University of Mining & Technology(Beijing), Beijing 100083，China; 2.Qitai Non-Metallic Engineering Co., Ltd, Jiangyin 214416，China)
Abstract: In order to systematically study the temperature regulation rules and control of the modified cavity, an automatic temperature measurement and control system was built on SLG-200 type powder surface modification machine to realize automatic monitoring of the temperature of the modified cavity and computer control of the opening of the air/material valve. The static model and transfer function model with air/material valve opening as input variable and modified cavity temperature as output variable were established. And the influence rule of air/material valve opening of the modifier on temperature under no-load operation condition was explored. The experimental results show that the adjusting effect of the air/material valve opening on the modified temperature is nonlinear under the condition of no-load operation. The effective adjusting range of the air valve opening is 20%～80%. The adjusting effect of the air valve on the temperature is more significant than that of the material valve. The gain of the transfer function first increases and then decreases. The characteristic time constant first decreases and then increases when the air valve opening increases from small to large.
Keywords: SLG powder surface modification machine; temperature adjusting and control; air valve opening; transfer function
中图分类号：TQ051; TB44
文献标志码：A
文章编号：1008-5548(2019)03-0001-05
DOI:10.13732/j.issn.1008-5548.2019.03.001
收稿日期： 2019-01-01，修回日期:2019-01-15，在线出版时间：2019-04-12 11:16。
基金项目：国家大学生创新训练项目，编号：C201803806。
第一作者简介：吴翠平(1968—)，女，博士，副教授，硕士生导师，研究方向为矿物加工及其计算机应用。E-mail：wcuip@vip.sina.com。
通信作者简介：郑水林(1956—)，男，博士，教授，博士生导师，研究方向为非金属矿深加工与资源综合利用。E-mail：13601339820@163.com。
