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【RTS笔记8】Discrete system

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【RTS笔记7】Discrete system

Discrete Signals 离散信号

物理世界信号多连续continue time。需要用 transducer转换|(给计算机)。
计算机信号多离散 discrete time。

Even/Odd Signals:奇函数偶函数的信号。

Digital Control 数字信号控制

Computer-Controlled Systems:

  1. The physical system to be controlled. 被控制的物理系统
  2. A sampler采样器 together with an analog-to-digital converter (ADC).
  3. A digital-to-analog converter (DAC) with a hold circuit保持电路.
  4. A computer with a clock, software for real-time applications, and control algorithms.在这里插入图片描述

Sampling 采样

A sampler is a device that converts a continuous-time signal into a discrete-time one. Normally, the sampler is combined into the ADC . The sampler is driven by the clock and usually runs at a constant sampling interval h h h. Samples occur at the instants t k = k h tk = kh tk=kh

零阶保持器zero-order hold(ZOH):
在这里插入图片描述

一阶保持器first-order hold(FOH):
在这里插入图片描述

Linear Algebra 线性代数

Vector向量:

column vector:
( a 1 a 2 ) \begin{pmatrix} a_1\\ a_2 \end{pmatrix} (a1​a2​​)

row vector:
( a 1 a 2 ) \begin{pmatrix}a_1&a_2\end{pmatrix} (a1​​a2​​)

transpose 转置(矩阵): b = a T = ( a 1 , a 2 , ⋅ ⋅ ⋅ , a n ) b = a^T= (a1, a2, · · · , an) b=aT=(a1,a2,⋅⋅⋅,an)

Matrix矩阵:

在这里插入图片描述
Square matrix:方阵
Null matrix:零矩阵
Diagonal matrix: 对角矩阵(对角线以外均为零的方阵)
Identity matrix:单位矩阵(对角线为1,其他为零的方阵)
Symmetric matrix 对称矩阵(沿着对角线对称的方阵)
determinan :行列式 ,缩写det

Cramer’s rule克莱姆法则:在这里插入图片描述

在这里插入图片描述

Dynamical Systems动态系统

Dynamical Systems:

dynamical system model动力系统模型:

State-space models状态空间模型:

Cart Pole?

Linear Time Invariant Systems线性时不变系统:

Linear Dynamical System 线性动态系统:

Continuous time state space representation of a linear dynamical system:

Predicting Future Behaviour预测未来行为:

在这里插入图片描述

convert 转化

interval 间隔
transpose 转置(矩阵)
Identity matrix 单位矩阵
Symmetric matrix 在这里插入图片描述

##待解决:
Cart Pole?

标签:matrix,矩阵,system,Discrete,Dynamical,Systems,RTS,time,Linear
来源: https://blog.csdn.net/jasonasuka/article/details/114719167