中文摘要：

以灯自身光强的强弱变化作为反馈信号，通过自身调节，使灯的亮度稳定在均匀水平上。通过电压和负载等变量的数据测量，利用1stopt和MATLAB软件，得到了理论模型，且理论值与真实值的误差仅有2．3％，并对该模型反馈调节的灵敏度进行了分析。

英文摘要：

According to the changes of light intensity was used as a feedback signal and through self- regulation, the luminance of the lamp is stable in the same brightness. Through measured variables such as voltage and load data and utilize 1 stopt and MATLAB software, we obtained a theoretical model and analysised the sensitivity of the model＇s feedback regulation. The error between tne theoretical val- ue and the true value is only 2.3%.