參數(shù)資料
型號: L292
廠商: 意法半導(dǎo)體
英文描述: SWITCH-MODE DRIVER FOR DC MOTORS
中文描述: 開關(guān)模式直流電動機(jī)驅(qū)動
文件頁數(shù): 10/12頁
文件大小: 161K
代理商: L292
Example :
a) Data
- Motors characteristics:
LM = 5 mH
RM = 5 W
L
M
/ R
M
= 1msec
- Voltage and current characteristics:
V
s
= 20 V
- Closed loop bandwidth : 3 kHz
I
M
= 2 A V
I
= 9.1 V
b) Calculation
- From relationship (4) :
R
s
=
0.044
I
M
V
I
=
0.2
and from (1) :
G
mo
=
2V
S
R
M
V
R
=
1
1
- RC = 1 msec [from expression (2) ].
- Assuming
ξ
= 1/
2 ; from (7) follows :
ξ
2
=
1
2
=
400 C
4
R
F
C
F
0.2
- The cutoff frequency is :
f
T
=
143
10
3
R
F
C
F
=
3 kHz
c) Summarising
- RC = 1.10
-3
sec
- 1000 C
R
F
C
F
=
1
- R
F
C
F
47
μ
s
C = 47 nF
R = 22 K
For R
F
= 510
C
F
= 92 nF
10/12
L292
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