题目内容
线性连续二阶系统的动态性能分析中,根据阻尼系数ζ的不同,稳定的二阶系统可分为无阻尼、欠阻尼、临界阻尼和过阻尼四种运动状态。对应阻尼系数ζ的取值范围分别是____、____、____和____。ζ____时,系统处于负阻尼,是不稳定的。
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