Title :
Temperature Control Based on PID for Colloidal Crystals Investigation
Author :
Yang, Hao ; Gao, Shangqi ; Sun, Zhibin ; Jiang, Yuanda ; Zhai, Guangjie ; Li, Ming
Author_Institution :
Center for Space Sci. & Appl. Res., Chinese Acad. of Sci., Beijing, China
Abstract :
Kossel-line diffraction method is an important way to measure the structure of crystals. Colloidal crystal is one of the hotspots on the condensed physics research. In order to obtain the diffraction image, a 473nm wavelength laser is used to irradiate samples, and then the Kossel-line image of sample is projected onto the translucent screen and recorded by charge coupled device (CCD) camera. The influence of temperature changing is one of the important crystallization research contents. A proportional-integral-derivative (PID) algorithm based on pulse-width modulation (PWM) is proposed to control the temperature of the sample solution.
Keywords :
CCD image sensors; X-ray diffraction; colloidal crystals; crystallisation; image processing; pulse width modulation; temperature control; three-term control; Kossel line diffraction method; PID; charge coupled device camera; colloidal crystal; condensed physics; diffraction image; image sample; pulse width modulation; temperature control; translucent screen; Colloidal crystals; Correlation; Crystallization; Diffraction; Optical diffraction; Temperature control; X-ray diffraction; PID; PWM; colloidal crystal; system identification; temperature control;
Conference_Titel :
Intelligent Systems (GCIS), 2010 Second WRI Global Congress on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-9247-3
DOI :
10.1109/GCIS.2010.232
