Double Closed-Loop Temperature Control System Based on Particle Swarm Optimization Fuzzy PID
A double closed-loop fuzzy PID temperature control system is designed for the sta-bility of the output wavelength and optical power of the near-infrared distributed feedback semiconduc-tor laser(DFB),which is greatly affected by temperature.Since the fuzzy PID controller's control of PID parameters depends on expert experience,although the control effect is good,there is still a cer-tain distance from the ideal state,so the particle swarm optimization algorithm is introduced into the fuzzy PID controller to achieve deeper optimization of parameters.The simulation results show that the fuzzy PID controller optimized by particle swarm optimization algorithm has faster response speed,smaller overshoot rate,and can make the system reach the stable state in a shorter time.
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