实验一二阶系统时域响应特性的实验研究Word下载.docx

实验一二阶系统时域响应特性的实验研究Word下载.docx

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sgrid

holdon

end

p=[36,64,72,98];

bode（sys;

grid

p=[10,150,200,300,400];

sys=feedback（p（i*G,1;

step（sys

gtext（'

p=10'

gtext（'

p=150'

p=200'

p=300'

p=400'

PI（i

p=1;

ki=[0.5:

0.5:

length（ki

G0=tf（p*[1,1/ki（i],[1,0];

sys=feedback（G0*G,1;

step（sysholdon

ki=[0.5,5,10,100];

sys=（G0*G;

gridholdon

rlocus（sys;

PI（P

StepResponse

Time（secAmplitude

Time（sec

Amplitude

010*********

6

5

1015

10

2030

40

2

4

681012

pi=[36,64,72,98];

k=1.5;

G0=tf（p（i*[1,1/k],[1,0];

sys=feedback（G0*G,1;

subplot（2,2,i;

step（sysholdonend

-2000200agnitude（dB

p=[36,64,72,98];

sys=（G0*G;

gridholdonend

ImaginaryAxisRealAxis

ImaginaryAxis

RealAxis

ImaginaryAxis-40-20020

-40-200

20-40-20020

PD（D

kd=[1.0:

5.0:

16];

length（kd

G0=tf（p*[kd（i,1],1;

step（sys;

kd=[1,5,32,64];

sys=G0*G;

p=1;

kd=[0.5,1,32,64];

fori=1:

sys=G0*G;

gridholdonendPD（K

46

8

02468

0.5

1

01234

k=1;

length（pG0=tf（p（i*[k,1],1;

BodeDiagramFrequency（rad/sec

BodeDiagram

Frequency（rad/sec

Frequency（rad/secBodeDiagram

-2100

102

ImaginaryAxis0.930.780.640.240.870.46-5-10-50RealAxisSystem:

sysGain:

0.0514RootLocusPole:

-5.94+0.975iDamping:

0.98750.870.780.640.240.46Overshoot（%:

00.93ImaginaryAxis42ImaginaryAxisImaginaryAxisSystem:

sysRootLocusGain:

0Pole:

-450.870.780.640.240.46Damping:

10.93Overshoot（%:

00.97Frequency（rad/sec:

40.99210864200.9920.97System:

0.04475Pole:

-5.530.870.460.930.780.640.24Damping:

1Overshoot（%:

5.530.99210864200.9920.970.930.780.640.240.870.46-5System:

sys-10-505Gain:

0.138RealAxisPole:

-5.86+3.82iDamping:

0.838Overshoot（%:

0.809RootLocusFrequency（rad/sec:

750.870.460.930.780.640.240.970.992108600.9920.9750.97Frequency（rad/sec:

6.020.992108600.9920.97420.930.780.640.240.870.46-5-10-50RealAxis50.930.780.640.240.870.46-5-10-50RealAxis5G=tf（1,[1,12,32,0];

gridholdonend