系统采用双闭环负反馈控制，控制类型选择PI控制。
The system used double negative feedback, and the type of control is PI control.
本文还选择了频率应和负反馈放大器稳定性判别中的一些实际问题，作为这种方法应用的实例。
As a practical example a frequency response and stability judgement of an amplifier with negative feedback are chosen to show the use of this method.
阐明了协同思维的基本原理，包括信息选择性原理、相似诱导性原理、正负反馈性原理和整体协同性原理。
Expounds the basic principle of synergetic thinking, namely information alternative principle, similar leading principle, straight negative feedback principle, together with whole of principle.
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