Research on precision temperature control of laser diode based on the novel fuzzy-PID control unit

Ke-fei ZHANG; Tao JIANG; Long SHAO; Liang-chuang SU; Tao YE

doi:10.3788/OPE.20172503.0648

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Research on precision temperature control of laser diode based on the novel fuzzy-PID control unit

更新时间：2020-07-07

- Research on precision temperature control of laser diode based on the novel fuzzy-PID control unit
- Optics and Precision Engineering Vol. 25, Issue 3, Pages: 648-655(2017)
- 作者机构：
  
  1.西南科技大学计算机科学与技术学院, 四川绵阳 621010
  2.西南科技大学理学院, 四川绵阳 621010
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20172503.0648
  CLC： TP273
- Received：14 November 2016，
  
  Accepted：22 December 2016，
  
  Published：25 March 2017
- 稿件说明：
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Ke-fei ZHANG, Tao JIANG, Long SHAO, et al. Research on precision temperature control of laser diode based on the novel fuzzy-PID control unit[J]. Optics and precision engineering, 2017, 25(3): 648-655.
DOI：

Ke-fei ZHANG, Tao JIANG, Long SHAO, et al. Research on precision temperature control of laser diode based on the novel fuzzy-PID control unit[J]. Optics and precision engineering, 2017, 25(3): 648-655. DOI： 10.3788/OPE.20172503.0648.

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

、

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17 s，其值为0.69 ℃；工作51 s后，LD系统进入稳定状态，温度保持为25±0.05 ℃；在第150~210 s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

To improve the impact of temperature fluctuation on performance of diode laser used for optical communication

a high-precision temperature control system by tracking error based on 3D linguistic variable was designed. To lower the system cost

at the same time

a temperature acquisition system was also designed under the help of operational amplifier AD620 and OP07

and least square method was used to fit the temperature data

thus establishing a temperature-resistance relationship model to predict the temperature variation trend; then a third-dimension fuzzy linguistic variable was added

and after properly compressing the domain of

and

ECC

in accordance with the narrow field theory

a new-type fuzzy-PID rule table was created by adopting the method for fuzzy rule setting

thus working out the fuzzy query table. The results indicate that when the specified temperature is 25 ℃

overshoot of the temperature control system will be 0.97 ℃

with a maximum impulse of 0.69 ℃ occurring at 17 s; after 51 s

LD system enters into a stable state

with a temperature maintained at 25±0.05 ℃; during the time period of 150~210 s

standard deviation of temperature value is kept at 0.020 4 ℃. The system

at the same time

achieves high precision temperature control over the diode laser within a large range of 0~75 ℃

with a temperature control precision of ±0.05 ℃. In addition

the system can achieve high-efficiency cooling and heating control over the diode laser

with such advantages as short response time

low cost and self-tuning parameters.

关键词

Keywords

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