【摘要】 简要介绍了一种采用可变光阑的自动调光系统的工作原理，并对整个控制系统的稳定性进行了详细分析。通过探寻自振现象产生的原因，为提高调光系统工作的可靠性提供了依据。更多还原

【Abstract】 This paper introduces simply the principle of automatically adjustable optical intensity system using iris diaphragm ,and analyses the stabilization of the whole control system in detail. By looking for the cause of “self oscillation,”the paper provides basis for improving the working reliability of the adjustable optical intensity system.更多还原