自动振幅控制系统的分析与设计
The Analysis and Design of Automatic Amplitude Control Systems
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摘要: 自动振幅控制系统是非线性闭路控制系统.本文研究它的静态和动态性能及设计方法, 证明了系统的静态压缩精度完全取决于环路增益.如在环路中使用一个积分器,系统的静态 性能将到到改善.本文还研究了一阶及二阶自动振幅控制系统低通滤波器参数的设计问题, 导出了设计公式,并证明了二阶系统的动态性能优于一阶系统.还分析了输出信号波形畸变 的原因,介绍了减少畸变的方法.Abstract: The static and dynamic characteristics of an automatic amplitude control system are discussed in this paper. The compression accuracy of an AAC system depends on its loop gain and the use of an integrator in the system will improve its static characteristic. It is shown that the dynamic characteristic of a second-order AAC system is better than a first-order one. The cause for output waveform distortion is analyzed and the method of reducing the distortion is also described.
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