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本文是在现有频域法综合反馈校正的基础上,吸收了综合法和分析法的优点,提出一种“分析—综合”法。即先按稳态指标绘制原系统的开环对数幅频特性,然后根据经验确定校正装置的形式,再按动态指标及所确定的校正装置形式绘制希望特性,最后给出系统校正装置的参数计算公式。该法既避免了综合法中可能出现的过于复杂的校正装置形式,又大大简化了在分析法中确定校正装置参数时的试探过程,便于工程实际调整。
Based on the comprehensive feedback correction of the existing frequency domain method, this paper absorbs the merits of the comprehensive method and the analytic method, and proposes an “analytic-synthetic method”. That is to say, the open-loop logarithmic amplitude-frequency characteristic of the original system is firstly plotted according to the steady-state index, then the form of the correction device is determined according to the experience, then the desired characteristics are drawn according to the dynamic index and the determined form of the correction device, and finally the parameters of the system correction device are given Calculation formula. The method not only avoids the over complex form of correction device that may appear in the synthesis method, but also greatly simplifies the heuristic process of determining the parameters of the correction device in the analysis method, which is convenient for the actual adjustment of the project.