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[判断题]
用系统的相位裕量即可衡量一个系统的相对稳定性。
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错误
B
正确
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试题答案:
正确
答案解释:
超前校正的效果使系统带宽增加,提高了时间响应速度,但对稳态误差影响较小;滞后校正则可提高稳态性能,但使系统带宽减小,降低了时间响应速度;采用相位滞后--超前校正,可以同时改善系统的瞬态响应和稳态响应。
相关题目
频率响应是指控制系统对
在单输人一单输出系统的瞬态响应分析或频率响应分析中,采用的数学模型是___ ,在现代控制理论中,数学模型则采用____。
反馈控制系统的基本工作原理是__
一阶系统时间常数的大小主要影响系统的什么性能_____。
二阶系统的阻尼比等于()
微分环节的频率特性相位移θ(ω)=()
控制论的中心思想是A.一门即与技术科学又与基础科学紧密相关的边缘科学B.通过信息的传递.加工处理和反馈来进行控制C.抓住一切通讯和控制系统所共有的特点D.对生产力的发展.生产率的提高具有重大影响
比例积分(PI)校正装置(设x=1)对系统性能的影响是()
一般对机械工程系统有三方面的性能要求,即稳定性_________及_____。
下面因素中,与系统稳态误差无关的是A.系统的类型B.开环增益C.输人信号D.开环传递函数中的时间常数
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