X射线荧光光谱仪恒温控制模块设计  

Design of Thermostatic Control Module for X Ray Fluorescence Spectrometer

作　　者：谢鹏[1] 麻硕[1] 党红文[1] 

机构地区：[1]冶金自动化研究设计院,北京100071

出　　处：《自动化与仪表》2014年第7期14-17,共4页Automation & Instrumentation

基　　金：国家重大科学仪器设备开发专项项目(2012YQ050076)

摘　　要：研制一种高精度高稳定度的恒温控制系统运用于波谱-能谱复合型X射线荧光光谱仪。采用PT1000铂电阻作为温度传感器,体积小精度高并且反应迅速。执行器采用发热电阻丝,利用PWM波形和双向可控硅控制电阻丝两端电压值,可提高控制精度增大温度控制范围。运用Fuzzy模糊控制和PID控制算法相结合,使系统有很好的鲁棒性和很小的稳态误差。最终使温室恒定在36℃,控制精度0.1℃。Designing a high precision and high stability stable temperature control system applied on EDS spectrum combined X-ray fluorescence spectrometer. Utilizing a PT1000 platinum resistance as temperature sensor,small size, high precision and rapid response.Actuators use heating resistance wire,and controlling the voltage value across the resistance wire using PWM waveform and triac,it can improve the control precision and increase temperature control range.Fuzzy control combine with PID control algorithm make the system has good Robusty and small steady state error. Finally the constant temperature of chamber was 36 ℃,and the control precision was 0.1 ℃.

关 键 词：恒温控制 PT1000铂电阻 PID控制 模糊控制 

分 类 号：TH702[机械工程—仪器科学与技术]