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采用定量计算的方法,分析了单极点、单零点以及共轭极点、共轭零点对系统频率响应的影响。分析表明单极、零点时以及共轭极点、共轭零点位于特定区域时,系统频率响应的幅频峰值、谷值的频率与极、零点位置所在频率严格一致。通过对多极、零点系统幅频响应的分析得出结论,出现幅频峰值、谷值的频率相对极、零点位置所在频率可能有偏移,但是仍然可以说:极点所在频率位置附近频率响应幅度出现峰值,零点所在频率位置附近频率响应幅度出现谷点。
Using the method of quantitative calculation, the influence of single pole, single zero point and conjugate pole and conjugate zero point on the system frequency response is analyzed. The analysis shows that when the unipolar, zero point and the conjugate pole are in the specific region, the amplitude and frequency of the system frequency response strictly coincide with the frequency of the pole and zero position. By analyzing the amplitude-frequency response of multi-pole and zero-point systems, it can be concluded that the frequencies of the peak amplitude and the valley value of the multi-pole and zero systems appear to be opposite poles and the frequency of the zero position may be offset. However, it can still be said that the frequency response amplitude Peak appears, zero frequency point where the frequency response occurs near the valley.