7
Download
1 / 80

第7章 非线型系统分析 - PowerPoint PPT Presentation


  • 156 Views
  • Uploaded on
  • Presentation posted in: General

第7章 非线型系统分析. 控制系统在不同程度上都存在着非线性。有些系统可通过在工作点附近 线性化来处理,但当系统包含有本质非线性特性时,就不能用线性化的方法处理。非线性系统与线性系统有本质的差别,非线性系统不满足叠加原理,它的稳定性不仅取决于控制系统的固有结构和参数,而且与系统的初始条件与输入信号有关。. 内容提要.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha

Download Presentation

第7章 非线型系统分析

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


7

7


SIMULINK

7


7


  • 7.1

  • 7.2

  • 7.3

  • 7.4

  • 7.5

7


7.1

7.1.1

7


7-17-1

7


71

7-2

7


7-2 7-2

7.1.2

(7-2)

7


, 7-3ab7-3c7-3bc

7.1.3

7


7-3

7-3a

7


c

7


b

7


7-4a7-4b2b2b7-4

7.1.4

7


7-4

7


7.2

Poincare1885,

,

7


7.2.1

:

:

7


(7-6): x

7-5 x(t),x(t)t

7


(7-6)x(t) , x t , t

7


7-1

7


:

7-5(a)a2 xo=0 b

7


7-5 7-1

7.2.2

7


SIMULINK

7


1

7-6

7


7


2

7-6

7


3

7-6

1)

2)

3)

7


7-2

00

7


ABCDO

EFO

00

7-6 7-2

7


7.3

7


7.3.1

7


:

00 7-8

7


7


7.4

2

7


7-8

7-8

7


7-8

7-8 7-2)

7-27-13

7


7.4.1

1 ,

7


2(0,0), 17-21037-211

,7-15

7


2r(t)=Vt ,

7.4.2

7


2(V/Kk0),4KTk>14KTk117-21011

T=1K=4k=1g=0.2

7


V>Kkg(0.8),V=1.220.30, 0.3027-9b,

7


V<Kkg,V=0.420.1027-9c, (0.1,0)0.1

V=Kkg,20.2027-9d, x[0.2,)

7


7-9

7


7-9 ,:

7


7.4.3

7


7-47-43

710

7


7-10

7


7-11

7


7-11

7


7.5

(P.J.Daniel)1940,

7


7-8

7.5.1

7


,, y=f (x)

X

7


A0=0

7


y=f(x) XX

X

7


1

7-12a 7-12b7-12a

7.5.2

7


7


7


7-12

7


2

7-13

7


7- 13a

y(t)7-13b

7


7


3

:

y(t)

7


7


x(t)=Xsinty=f(x)N(X) N(X)

7


7.5.3

7-14

7-14N(X)G(X)

7


1

7-14

y=kxN(X)=kG(s)NyquistG(j)1k

7


N(X)XN(X)G(j)1N(X)G(j)1N(X)G(j)1N(X)G(j)1N(X)1N(X)

7


2

7-16

7-16

7


ABADDG(j)CCG(j)BA

7


BFF BEE BA

7


7.6 SIMULINK

SIMULINK SIMULINK

7


7-17

7-17

7


SIMULINK7-18

7-18 SIMULINK

7


Matlab6.5MATLABSIMULINKSimulink Library BrowserFile\New\Modeluntitled(Save as)

Simulink library Browser DISCONTINUTIESMATH OPERATIONSSINKSOURCuntitled7-18(Integrator)(Dead Zone)SIMULINK\DISCONTINUTIES(Gain)(Dot Product)SIMULINK\MATH OPERATIONSXY Graph SIMULINK\SINKSIMULINK\SOURCE

7


XY Graphx 7-18Integrator2

Integrator11 Integrator20 00[-0.30.3]

SIMULATION\ SIMULATION PARAMETERS\SOLVERSolverTypeFixed StepSolver()0.05Stop Time 50SIMULATION\START7-19a,0

7


7-19 SIMULINK

7


.7-18b[-0.50.5]7-18c7-18d[-0.10.1]7-18cd

7


subplot(1,1,1),plot(xout(:,1),xout(:,2))

grid on,axis([-1,1,-1,1])

xlabel('X'),ylabel('dX')

File\Export

SIMULINK 7-3SIMULINK7-207-21(a)(b)7-21(a)7-21(b)7-7

7


7-20 7-3SIMULINK

7


7-21 7-3SIMULINK

7


7


ad
  • Login