| 叶树明 张建文,李世伦 |
(浙江大学生命科学院,浙江杭州 310027)(浙江大学流体传动及控制国家重点实验室,浙江杭州 310027) |
 摘要：对高温高压化学传感器检测校正平台的温度控
制系统进行了分析,建立了系统优化的数学模型。该
系统存在两级滞后,而且受到环境温度和反应釜内热
液流速的干扰,普通PID控制不能及时对干扰产生抑
制作用,而使控制系统出现较大超调,温度波动较大,
控制系统的动态性能很差。而化学传感器检测校正需
要的温度条件非常苛刻,对温度的控制精度要求极其
严格,所以需要一种新的解决办法。介绍了一种对系
统的两级滞后环节采用PID和双Smith预估反馈的方
法。在系统MATLAB仿真和实际试验中得到了良好
的效果,满足系统的精度要求。 |
| 关键词：化学传感器;温度控制;Smith预估器 |
| 中图分类号:TP273;TP212文献标识码:A |
| Temperature Control System of Experimental Platform for High Temperature-Pressure Chemi-cal Sensor |
| Abstract：Temperature control system of experimental
platform for high temperature-pressure chemical sensor
is analysed,and an optimization model of the system is
established.Because of exiting two time-delay components,and being disturbed by ambient temperature and
flow rate of the heat fluid in the reactor,general PID
control can not cancel the disturbance timely,and lead to
the large overshoot,and the fluctuation of temperature,
and bad dynamic performance.The experimental platform for chemical sensor is stricted in the ambient temperature, so a new approach to control the temperature
is needed.A method that PID and dual Smith-predictors
are used to eliminate the time-delay is introduced.A
good control results are obtained by this approach. |
| Key words：chemical sensor;temperature control;Smithpredictor |
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