激光热稳频光源的自适应控制

Control of Self-Adapted on Double Longitudinal Mode Thermal Frequency Stabilization of Laser

双纵模激光源预测控制利用热稳频系统在预热过程的特征自组织建模,并引入自适应改进模型误差。建模采用非参数化,预热平衡后,由8098给出加热或散热阶跃控制信号,经噪声处理得其阶跃响应曲线,以自组织预测控制算法实现激光器的双纵模热稳频。自适应采用间接算法,即在稳频过程以系统施加的控制量及控制结果,通过最小二乘法不断估计系统模型,按一定学习速度改进模型,得到较完善的控制效果。

A predictive control of double longitudinal mode thermal frequency stabilization of laser is realized by using the self-organized modeling based on the character of warm-up process of the thermal frequency stabilization system, self-adapted algorithm which reduces the mode error and non-parameterized modeling. When the warm-up balance, the heat-up or heat-down step control signal is worked out by SCM and the step response curve is also gained. The self-adapted adopts indirectness arithmetic, which estimates continuously the system modeling by using the least square multiplication algorithm and improves on the modeling according to a suitable learning speed and gains perfect control effects.