通常,对随动系统综合的任务是在给定的开环放大系数和通频带宽度下,选择能满足调节品质指标的校正装置。在理论上,并联深度软反馈具有其它种校正装置所不可比拟的优越性,但在实践中,往往需要付出较大的代价才能实现。在这里,我们运用的是提高系统的开环放大系数(即速度品质因数 k_v)的方法给施加深度软反馈创造必要的条件。这时,k_v 已经不是给定值,而是在综合过程中需要重新确定的一个重要因素了。实践证明,用这种方法可以获得较好的系统品质指标。一般小功率位置随动系统的开环固有特性具有如下形式的传递函数, In general, the task of synthesizing a servo system is to select a correction device that meets the regulatory quality specifications for a given open-loop amplification factor and passband width. In theory, parallel deep soft feedback has the superiority that other kinds of correction devices can not compare, but in practice, it often costs more to achieve. Here, we use the method of increasing the system’s open-loop amplification factor (ie, speed quality factor k_v) to create the necessary conditions for applying deep soft feedback. At this point, k_v is not a given value, but an important factor that needs to be redefined in the synthesis process. Practice has proved that using this method can get better system quality indicators. The open loop inherent characteristic of a general low power position follower system has the following form of transfer function,