A Study on Determination of PID Coefficients by Deriving Temperature Stabilization Transfer Function and it's Simulation

Title & Authors
A Study on Determination of PID Coefficients by Deriving Temperature Stabilization Transfer Function and it's Simulation
Eom, Jinseob;

Abstract
In this paper, a new method for obtaining PID coefficients which are essential to a temperature stabilization process has been proposed. This method starts from measuring the open loop transfer function of the module, then the closed loop transfer function embodying PID control can be produced based on this. Finally, the simulations using a few PID coefficients and the performance analysis for those results provide the best PID coefficients which are effective in a fast setting to a target temperature, a less current needed, and less deviation from steady state. The measurement using the derived PID coefficients, $\small{K_p=1.6}$,$\small{K_i=0.8}$,$\small{K_d=0.3}$ showed $\small{T_s=7.4[sec]}$, %OS = 16, and stabilization within $\small{{\pm}0.02[^{\circ}C]}$ for several hours. In addition to light sources like SOA, the proposed method can be utilized for any device needs temperature stabilization.
Keywords
Temperature stabilization;PID coefficients;Settling time;Percent overshoot;
Language
Korean
Cited by
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