基于新型模糊PID控制单元的LD精密温控研究

发布时间：2018-02-26 21:55

  本文关键词： 光通信 半导体激光器 模糊PID 温度控制　出处：《光学精密工程》2017年03期 　论文类型：期刊论文

【摘要】：为改善温度波动对光通信用半导体激光器性能的影响,设计了基于三维语言变量的高精度跟踪误差温度控制系统。为减小系统成本,利用运算放大器AD620和OP07等器件设计了温度采集系统,并采用最小二乘法拟合温度数据,从而建立温度—电阻关系模型,预测温度变化趋势;加入第三维模糊语言变量,结合窄域论以适当压缩E、EC、ECC的论域,采用模糊规则设定方法,建立新型三维模糊PID规则表并求解得出模糊查询表。结果表明:当预设温度为25℃时,温控系统超调量为0.97℃,最大下冲量出现在第17s,其值为0.69℃;工作51s后,LD系统进入稳定状态,温度保持为25±0.05℃;在第150~210s内,其温度值标准差为0.020 4℃。同时,该系统实现了对半导体激光器0~75℃的大范围精密温控,温控精度为±0.05℃。该系统能够实现对半导体的高效制冷、加热控制,具有响应时间快和系统开销小的优势,能对控制参数实现自整定。
[Abstract]:In order to improve the effect of temperature fluctuation on the performance of semiconductor lasers for optical communication, a high precision tracking error temperature control system based on 3D language variables is designed. The temperature acquisition system is designed by using operational amplifier AD620 and OP07, and the temperature data are fitted by the least square method, thus the temperature-resistance relation model is established, the trend of temperature change is predicted, and the third dimension fuzzy language variable is added. Combined with the narrow domain theory, a new three-dimensional fuzzy PID rule table is established by using the fuzzy rule setting method. The results show that the overshoot of the temperature control system is 0.97 鈩，

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