控制系统中带宽的理解 控制系统中带宽的理解 定义 带宽频率; 闭环截止频率，指当闭环幅频特性下降到频率为 0 时的 分贝 值以下 3dB 时，对应的频率，记为 $w_b$。 开环截止频率; 也成为剪切频率，是闭环系统的开环幅频特性中，幅频特性曲线穿越 0dB 线的频率，记为 $w_c$。 开环截止频率与闭环截止频率具有同向性; 对一个闭环控制系统而言，其开环
2022年8月9日
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