本文選題：PID + 遺傳算法��； 參考：《科學技術與工程》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,根據熱力學理論建立整個系統(tǒng)的數學模型,利用有限元仿真方法得到其傳遞函數,在此基礎上采用遺傳算法實現PID控制參數的在線自適應整定,同時結合Smith預估控制補償由滯后環(huán)節(jié)產生的時間遲滯。采用Matlab對控制算法進行仿真分析,結果表明該方法較常規(guī)PID控制方法具有調整時間短、超調量小、抗干擾能力強等優(yōu)點。設計基于單片機和TEC驅動模塊的硬件電路將控制算法應用于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。實際應用結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