frequency analysis and control 频率分析与控制
Methods of analyzing the dynamic performance of automatic control system can include time domain analysis, frequency domain analysis and stability.
自动控制系统的动态性能的分析方法包括时域分析法，频域分析法，及稳定性判据。
Frequency spectrum analysis and the crossing point of voltage are adopted to control the corresponding filter branch switch.
采用了频谱分析法和电压过零点控制相应的滤波支路投入运行。
Based on analysis and discussion to normal design of frequency speed change control for cement plant, optimized design plan for general frequency speed change control has been put forward.
以水泥厂常见的变频调速控制设计为例，在对其认真分析讨论的基础上，提出了通用变频调速控制优化设计方案。
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