本文選題：PID + 遺傳算法��； 參考：《科學(xué)技術(shù)與工程》2016年29期

【摘要】：針對電子倍增電荷耦合器件(EMCCD)溫度控制過程的時間滯后特性,根據(jù)熱力學(xué)理論建立整個系統(tǒng)的數(shù)學(xué)模型,利用有限元仿真方法得到其傳遞函數(shù),在此基礎(chǔ)上采用遺傳算法實現(xiàn)PID控制參數(shù)的在線自適應(yīng)整定,同時結(jié)合Smith預(yù)估控制補償由滯后環(huán)節(jié)產(chǎn)生的時間遲滯。采用Matlab對控制算法進行仿真分析,結(jié)果表明該方法較常規(guī)PID控制方法具有調(diào)整時間短、超調(diào)量小、抗干擾能力強等優(yōu)點。設(shè)計基于單片機和TEC驅(qū)動模塊的硬件電路將控制算法應(yīng)用于EMCCD溫度控制系統(tǒng),相機實際制冷溫度可達(-12±0.1)℃,圖像本底噪聲方差僅為18。實際應(yīng)用結(jié)果表明溫度控制系統(tǒng)是提升EMCCD相機成像性能的有效方法。
[Abstract]:In view of the time-lag characteristics of the temperature control process of the electron multiplier charge coupled device (EMCCD), the mathematical model of the whole system is established according to the thermodynamic theory, and its transfer function is obtained by using the finite element simulation method. On the basis of this, genetic algorithm is used to realize the on-line adaptive tuning of PID control parameters, and Smith predictive control is used to compensate the time delay caused by the lag link. Matlab is used to simulate the control algorithm. The results show that the proposed method has the advantages of shorter adjustment time, less overshoot and stronger anti-jamming ability than the conventional PID control method. The hardware circuit based on MCU and TEC driver module is designed to apply the control algorithm to the EMCCD temperature control system. The actual refrigeration temperature of the camera can reach -12 鹵0.1 鈩，

本文編號：1906841