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[单选题]
控制系统采用PID校正的主要目的是
A.增加开环增益
B.改善系统型次
C.合理配置零极点
D.增加系统快速性
A
B
C
D
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参考答案
试题答案：
C
答案解释：
相关题目
PI调节器是一种（）校正装置。
在控制系统的前向通道中加入延迟环节后（）
零点是指系统传递函数中分母等于零的s的值。
如果在恒值输入情况下，某反馈控制系统的稳态误差不为零，若欲使其为零，则应选择（）串联校正。
用奈奎斯特稳定性判据判断系统稳定性的充分和必要条件是什么?
下列开环传递函数所表示的系统，属于最小相位系统的有（）
二阶振荡环节的对数频率特性相位移θ(ω)在（）之间。
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____。
决定线性系统稳定的是A.输入信号的类型B.系统的类型C.系统本身特征D.输入信号的强弱
线性系统的主要特征是什么?
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国际金融法中的赤道原则只适用于
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学习型组织
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下列属于司法审查范围的是
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对公开审判制度理解正确的是
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23.There is a difference between science and technology.Science is a method of answering theoretical questions;technology is a method of solving practical problem.Science has to do with the facts and relationships between observable phenomena in nature and with establishing theories that serve to organize these facts and relationships;technology has to do with tools,techniques,and procedures for implementing the finding of science.Another distinction between science and technology has to do with the progress in each.Progress in science excludes the human factor.Scientists,who seek to comprehend the universe and know the truth with the highest degree of accuracy and certainty,cannot pay attention to their own or other people's likes or dislikes or to popular ideas about the fitness of things.What scientists discover may shock or anger people-as did Darwin's theory of evolution.But even an unpleasant truth is more than likely to be useful;besides,we have the choice of refusing to believe it!But it's hardly so with technology and we do not have the choice of refusing to hear the sonic boom produced by a supersonic aircraft flying overhead;we do not have the choice of refusing to breathe polluted air;and we do not have the choice of living in a non-atomic age.Unlike science progress,technology must be measured in terms of the human factor.The legitimate purpose of technology is to serve people in general,not merely some people;and future generantions,not merely those who presently wish to gain advantage for themselves.Technology must be humanistic if it is to lead to a better world.(10分)23.1 Which of the following statements about science is NOT true?(2分)A. Scinece provides answers to theoretical questions.B. Scinece seeks to comprehend the universe.C. Scinece aims to discover the inter-connections of facts and rules that explain them.D. Scinece serves people in general and can be measured in terms of the human factor.
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