针对某陀螺生产厂家新引入的超辐射发光二极管光源在原光源驱动设备上的功率变化异常的问题, 对光源温控环节的传递函数和相应控制参数进行了理论和试验分析。相比陀螺常用SLD光源, 新引入SLD光源内部热敏电阻与SLD管芯间距大得多, 且不在同一热沉上, 这使得该厂光源温控部分的传递函数出现明显时间滞后, 表现为其对微分环节依赖性增强。通过对原光源驱动设备上微分环节的优化设计, 可使热敏电阻位置相差较大的不同厂家的光源同时获得良好温控效果。上述结果对于理解SLD光源温控PID(比例-积分-微分)参数差异性、提高SLD光源温度控制适应性提供了客观依据。

Aim at the variety abnormality of the light power in some new superluminescent diode(SLD)working at former SLD driver, the theoretical and experimental investigation of the SLD transfer function and corresponding control parameters are done. Compared with common SLD in FOG, the distance between thermistor resistance and radiation chip is farther, which brings a obvious time delay to the SLD transfer function and makes the relationship between SLD and differential parameter closer. Through optimizing the differential parameter of former SLD driver, high control precision is achieved for all SLDs produced by different factories, which distance between thermistor resistance and radiation chip is much different. Above results can help to understand the PID(Proportion Integration Differentiation) difference of SLDs and improve the adaptability of the SLD driver.