| 高温熔体粘度测试仪的温度控制技术 |
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| 引用本文： | 苏玉刚,李玉刚,胡涛,孙跃.高温熔体粘度测试仪的温度控制技术[J].重庆大学学报(自然科学版),2007,30(10):60-64. |
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| 作者姓名： | 苏玉刚 李玉刚 胡涛 孙跃 |
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| 作者单位： | 重庆大学,自动化学院,重庆,400030;长安汽车集团公司,军品研究中心,重庆,400023 |
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| 摘 要： | 介绍了高温熔体粘度测试仪的组成和功能.分析了高温熔体粘度测试仪温度控制系统的特点.为了提高加热速度和温度控制精度,提出了阈值控制策略与自适应模糊PID控制相结合的控制算法.在高温炉当前温度值与设定温度值偏差较大时,为了保护系统和提高加热速度,运用阙值控制策略对系统进行控制,在高温炉当前温度值与设定温度值偏差较小时,运用自适应模糊PID控制,以保证控制精度.仿真研究和试验测试证明,该控制算法在保证控制精度的基础上,能很好地提高系统的动态性能.
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| 关 键 词： | 粘度测试仪 温度控制 阈值控制 自适应模糊PID |
| 文章编号： | 1000-582X（2007）10-0060-05 |
| 修稿时间： | 2007-06-14 |
Temperature Control of High Temperature Melt Viscosity Test Instrument |
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| SU Yu-gang,LI Yu-gang,HU Tao,SUN Yue.Temperature Control of High Temperature Melt Viscosity Test Instrument[J].Journal of Chongqing University(Natural Science Edition),2007,30(10):60-64. |
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| Authors: | SU Yu-gang LI Yu-gang HU Tao SUN Yue |
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| Institution: | 1. College of Automation, Chongqing University, Chongqing 400030, China ; 2. Military Research Center of Changan Auto Co, Chongqing 400023, China |
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| Abstract: | The construction and function of high temperature melt viscosity test instrument are introduced in this paper. And the character of temperature control system is given. In order to improve dynamic and static performance of the temperature control system, a new method is proposed which combines threshold control with adaptive fuzzy PID control. While the current temperature of the heating furnace is much lower than the given temperature, threshold control works in order to protect system and improve dynamic performance. When the current temperature is close to the given value, adaptive fuzzy PID control works to improve static performance. At last, simulation and experiment results validate the proposed control method. |
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| Keywords: | viscosity test instrument temperature control threshold control adaptive fuzzy PID control |
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