Design of Temperature Model Predictive Control for Semiconductor Lasers in Laser Soft Soldering System

Kuan Yan; Cong Zhang; Xubing Chen; Mingchao Li; Jie Fang; Dong Ye

doi:10.3788/AOS240578

Acta Optica Sinica, Volume. 44, Issue 14, 1414001(2024)

Design of Temperature Model Predictive Control for Semiconductor Lasers in Laser Soft Soldering System

Kuan Yan¹, Cong Zhang^1、*, Xubing Chen¹, Mingchao Li¹, Jie Fang¹, and Dong Ye²

Author Affiliations

¹School of Mechanical & Electrical Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei , China

²State Key Laboratory of Intelligent Manufacturing Equipment and Technology, Wuhan 430223, Hubei , China

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Figures & Tables(12)

Fig. 1. Schematic of thermal control system with a single-stage TEC

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Fig. 2. Flow chart of MPC

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Fig. 3. Controller running time for different prediction and control time domains

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Fig. 4. Physical diagram of semiconductor laser thermal control system

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Fig. 5. Laser random input current

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Fig. 6. Temperature of laser controlled by MPC and PID algorithms under working condition 1

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Fig. 7. Center wavelength fluctuation of laser thermal-control system based on MPC and PID algorithms. (a) MPC algorithm; (b) PID algorithm

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Fig. 8. Laser soft soldering experiment equipment

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Fig. 9. Soldering point temperature in the laser soft soldering experiment and laser output electricity

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Table 1. Comparison of MPC and PID control effect and energy consumption
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Table 1. Comparison of MPC and PID control effect and energy consumption
Algorithm MPC PID
Laser temperature overshoot /% 1.12 9.84
Power consumption /kW 0.32 0.55

Table 2. Main compositions of SnAg3.0Cu0.5
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Table 2. Main compositions of SnAg3.0Cu0.5
Material Mass fraction /%
Sn 96.0
Ag 3.0
Cu 0.5

Table 3. Process parameters of soft soldering
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Table 3. Process parameters of soft soldering
Stage Temperature /℃ Time /ms
Preheating 180 0-250
Insulation 217 250-800
Weld 240 800-1000
Overall process — 1000

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Kuan Yan, Cong Zhang, Xubing Chen, Mingchao Li, Jie Fang, Dong Ye. Design of Temperature Model Predictive Control for Semiconductor Lasers in Laser Soft Soldering System[J]. Acta Optica Sinica, 2024, 44(14): 1414001

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