【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:
- The physical system to be controlled. 被控制的物理系统
- A sampler采样器 together with an analog-to-digital converter (ADC).
- A digital-to-analog converter (DAC) with a hold circuit保持电路.
- A computer with a clock, software for real-time applications, and control algorithms.
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):
一阶保持器first-order hold(FOH):
Linear Algebra 线性代数
Vector向量:
column vector:
(
a
1
a
2
)
\begin{pmatrix} a_1\\ a_2 \end{pmatrix}
(a1a2)
row vector:
(
a
1
a
2
)
\begin{pmatrix}a_1&a_2\end{pmatrix}
(a1a2)
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:
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:
Dynamical Systems动态系统
Dynamical Systems:
- evolves over time 随时间演变
- possibly under external excitations 接受外界刺激
dynamical system model动力系统模型:
- compact紧凑
- quantitative定量
- evolves over time 时间相关
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:
词
convert 转化
分
interval 间隔
transpose 转置(矩阵)
Identity matrix 单位矩阵
Symmetric matrix
##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