Edited, memorised or added to reading queue

on 02-Dec-2023 (Sat)

Do you want BuboFlash to help you learning these things? Click here to log in or create user.

Flashcard 7601543580940

Question

根轨迹上的点必须满足相角条件和幅值条件：

- 相角条件： [...]

- 幅值条件： [...]

Answer

- 相角条件：\(\begin{gathered}\sum_{j=1}^m \angle\left(s-z_j\right)-\sum_{i=1}^n \angle\left(s-p_i\right)=(2 k+1) \pi \\k=0, \pm 1, \pm 2, \cdots\end{gathered}\)

- 幅值条件：\(\displaystyle K^*= \frac{\displaystyle\prod_{i=1}^n\left|s-p_i\right|}{\displaystyle \prod_{j=1}^m\left|s-z_j\right|}\)


statusnot learnedmeasured difficulty37% [default]last interval [days]               
repetition number in this series0memorised on               scheduled repetition               
scheduled repetition interval               last repetition or drill

相角条件和幅值条件
根轨迹上的点必须满足相角条件和幅值条件： - 相角条件：\(∑j=1m∠(s−zj)−∑i=1n∠(s−pi)=(2k+1)πk=0,±1,±2,⋯\begin{gathered}\sum_{j=1}^m \angle\left(s-z_j\right)-\sum_{i=1}^n \angle\left(s-p_i\right)=(2 k+1) \pi \\k=0, \pm 1, \pm 2, \cdots\end{gathered}\) - 幅值条件：\(K^*=\frac{\prod_{i=1}^n\left|s-p_i\right|}{\prod_{j=1}^m\left|s-z_j\right|}\)






Flashcard 7602305109260

Question
通过分析[...]，可以分析系统的稳定性、稳态性能和动态性能
Answer
根轨迹图

statusnot learnedmeasured difficulty37% [default]last interval [days]               
repetition number in this series0memorised on               scheduled repetition               
scheduled repetition interval               last repetition or drill

根轨迹与系统性能的关系
通过分析根轨迹图，可以分析系统的稳定性、稳态性能和动态性能






Annotation 7602486512908

odern philoso- phy, understanding by this term that which has been influenced by the rise of the newer natural science, has contained within itself an inner division. It has tried to combine acceptance of the conclusions of scientific inquiry as to the natural world with acceptance of doctrines about the nature of mind and knowledge which originated before there was such athing as systematic experimental inquiry. Between the two there is an inherent incompatibility. Hence the best efforts of philosophy have been constantly frustrated by artificiality and by contro- versial conflicts.
statusnot read reprioritisations
last reprioritisation on suggested re-reading day
started reading on finished reading on

pdf

cannot see any pdfs



Annotation 7602488085772

it also retained three significant elements of ancient thought: the first, that certainty, security, can be found only in the fixed and unchanging} the second, that knowledge is the only road to that which is intrinsically stable and certain} the third, that practical activity is an inferior sort of thing, necessary simply because of man's animal nature and the necessity for winning subsistence from the environment.
statusnot read reprioritisations
last reprioritisation on suggested re-reading day
started reading on finished reading on

pdf

cannot see any pdfs



Annotation 7602489658636

Greek thought never made asharp separation between the rational and perfect realm and the natural world. The latter was indeed inferior and infected with non-being or privation. But it did not stand in any sharp dualism to the higher and perfect reality. Greek thinking ac- cepted the senses, the body and nature with natural piety and found in nature ahierarchy of forms leading degree by de- gree to the divine. The soul was the realized actuality of the body, as reason was the transcendent realization of the intima- tion of ideal forms contained in the soul. The senses included within themselves forms which needed only to be stripped of their material accretions to be true stepping stones to higher knowledge.
statusnot read reprioritisations
last reprioritisation on suggested re-reading day
started reading on finished reading on

pdf

cannot see any pdfs



Annotation 7602498833676

PL/R User’s Guide - R Procedural Language (whole page)
statusnot read reprioritisations
last reprioritisation on suggested re-reading day
started reading on finished reading on

PL/R - R Procedural Language for PostgreSQL
stgreSQL Compatibility Support PostgreSQL Support Functions Aggregate Functions Window Functions Loading R Modules at Startup R Function Names Trigger Procedures License Navigation : navigation <span>PL/R User’s Guide - R Procedural Language Table of Contents 1. Overview 2. Installation 3. Functions and Arguments 4. Passing Data Values 5. Using Global Data 6. Database Access and Support Functions 6.1. Normal Support 6.2. RP



Annotation 7602511154444

Part I. Tutorial: Chapter 1. Getting Started (whole chapter)
statusnot read reprioritisations
last reprioritisation on suggested re-reading day
started reading on finished reading on

pdf

cannot see any pdfs



Annotation 7602513513740

Part I. Tutorial: Chapter 2. The SQL Language (whole chapter)
statusnot read reprioritisations
last reprioritisation on suggested re-reading day
started reading on finished reading on

pdf

cannot see any pdfs



Annotation 7602515873036

Chapter 3. Advanced Features
statusnot read reprioritisations
last reprioritisation on suggested re-reading day
started reading on finished reading on

pdf

cannot see any pdfs