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(duì)電子倍增電荷耦合器件(EMCCD)溫度控制過(guò)程的時(shí)間滯后特性,根據(jù)熱力學(xué)理論建立整個(gè)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(shí)現(xiàn)PID控制參數(shù)的在線自適應(yīng)整定,同時(shí)結(jié)合Smith預(yù)估控制補(bǔ)償由滯后環(huán)節(jié)產(chǎn)生的時(shí)間遲滯。采用Matlab對(duì)控制算法進(jìn)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(shí)間短、超調(diào)量小、抗干擾能力強(qiáng)等優(yōu)點(diǎn)。設(shè)計(jì)基于單片機(jī)和TEC驅(qū)動(dòng)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(jī)實(shí)際制冷溫度可達(dá)(-12±0.1)℃,圖像本底噪聲方差僅為18。實(shí)際應(yīng)用結(jié)果表明溫度控制系統(tǒng)是提升EMCCD相機(jī)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(hào)：1906842