New Laplace Transform Table

background image

ENGS 22 — Systems

Laplace Table

Page 1

Laplace Transform Table

Largely modeled on a table in D’Azzo and Houpis, Linear Control Systems Analysis and Design, 1988

F (s)

f (t)

t

0

1. 1

)

(t

δ

unit impulse at t = 0

2.

s

1

1 or

)

(t

u

unit step starting at t = 0

3.

2

1

s

)

(t

u

t

or t ramp function

4.

n

s

1

1

)!

1

(

1

n

t

n

n = positive integer

5.

as

e

s

1

)

(

a

t

u

unit step starting at t = a

6.

)

1

(

1

as

e

s

)

(

)

(

a

t

u

t

u

rectangular pulse

7.

a

s

+

1

at

e

exponential decay

8.

n

a

s

)

(

1

+

at

n

e

t

n

1

)!

1

(

1

n = positive integer

9.

)

(

1

a

s

s

+

)

1

(

1

at

e

a

10.

)

)(

(

1

b

s

a

s

s

+

+

)

1

(

1

bt

at

e

a

b

a

e

a

b

b

ab

+

11.

)

)(

(

b

s

a

s

s

s

+

+

+

α

]

)

(

)

(

[

1

bt

at

e

a

b

b

a

e

a

b

a

b

ab

+

α

α

α

12.

)

)(

(

1

b

s

a

s

+

+

)

(

1

bt

at

e

e

a

b

13.

)

)(

(

b

s

a

s

s

+

+

)

(

1

bt

at

be

ae

b

a

background image

ENGS 22 — Systems

Laplace Table

Page 2

F(s)

f(t)

t

0

14.

)

)(

(

b

s

a

s

s

+

+

+

α

]

)

(

)

[(

1

bt

at

e

b

e

a

a

b

α

α

15.

)

)(

)(

(

1

c

s

b

s

a

s

+

+

+

)

)(

(

)

)(

(

)

)(

(

c

b

c

a

e

b

a

b

c

e

a

c

a

b

e

ct

bt

at

+

+

16.

)

)(

)(

(

c

s

b

s

a

s

s

+

+

+

+

α

)

)(

(

)

(

)

)(

(

)

(

)

)(

(

)

(

c

b

c

a

e

c

b

a

b

c

e

b

a

c

a

b

e

a

ct

bt

at

+

+

α

α

α

17.

2

2

ω

ω

+

s

t

ω

sin

18.

2

2

ω

+

s

s

t

ω

cos

19.

2

2

ω

α

+

+

s

s

)

sin(

2

2

φ

ω

ω

ω

α

+

+

t

)

,

atan2(

α

ω

φ

=

20.

2

2

cos

sin

ω

θ

ω

θ

+

+

s

s

)

sin(

θ

ω

+

t

21.

)

(

1

2

2

ω

+

s

s

)

cos

1

(

1

2

t

ω

ω

22.

)

(

2

2

ω

α

+

+

s

s

s

)

cos(

2

2

2

2

φ

ω

ω

ω

α

ω

α

+

+

t

)

,

atan2(

α

ω

φ

=

23.

)

)(

(

1

2

2

ω

+

+

s

a

s

)

sin(

1

2

2

2

2

φ

ω

ω

ω

ω

+

+

+

t

a

a

e

at

)

,

atan2(

α

ω

φ

=

24.

2

2

)

(

1

b

a

s

+

+

)

sin(

1

bt

e

b

at

24a.

2

2

2

1

n

n

s

s

ω

ζω

+

+

)

1

sin(

1

1

2

2

t

e

n

t

n

n

ζ

ω

ζ

ω

ζω

25.

2

2

)

(

b

a

s

a

s

+

+

+

)

cos( bt

e

at

background image

ENGS 22 — Systems

Laplace Table

Page 3

F(s)

f(t)

t

0

26.

2

2

)

(

b

a

s

s

+

+

+

α

)

sin(

)

(

2

2

φ

α

+

+

bt

e

b

b

a

at

)

,

atan2(

a

b

=

α

φ

26a.

2

2

2

n

n

s

s

s

ω

ζω

α

+

+

+

(

)

)

1

sin(

1

1

2

2

2

φ

ζ

ω

ζ

ζω

ζω

ω

α

+

+

t

e

n

t

n

n

n

)

,

1

atan2(

2

n

n

ζω

α

ζ

ω

φ

=

27.

]

)

[(

1

2

2

b

a

s

s

+

+

)

sin(

1

1

2

2

2

2

φ

+

+

+

bt

e

b

a

b

b

a

at

)

,

atan2(

a

b

=

φ

27a.

2

2

2

(

1

n

n

s

s

s

ω

ζω

+

+

)

1

sin(

1

1

1

2

2

2

2

φ

ζ

ω

ζ

ω

ω

ζω

+

t

e

n

t

n

n

n

ζ

φ

1

cos

=

28.

]

)

[(

2

2

b

a

s

s

s

+

+

+

α

)

sin(

)

(

1

2

2

2

2

2

2

φ

α

α

+

+

+

+

+

bt

e

b

a

b

a

b

b

a

at

)

,

atan2(

)

,

atan2(

a

b

a

b

=

α

φ

28a.

)

2

(

2

2

n

n

s

s

s

s

ω

ζω

α

+

+

+

)

1

sin(

)

1

(

)

(

1

1

2

2

2

2

2

φ

ζ

ω

ζ

ζ

ω

α

ζ

ω

ω

α

ζω

+

+

+

t

e

n

t

n

n

n

n

)

,

1

atan2(

)

,

1

atan2(

2

2

ζ

ζ

ζ

ω

α

ζ

ω

φ

=

n

n

29.

]

)

)[(

(

1

2

2

b

a

s

c

s

+

+

+

2

2

2

2

)

(

)

sin(

)

(

b

a

c

b

bt

e

b

a

c

e

at

ct

+

+

+

φ

)

,

atan2(

a

c

b

=

φ

background image

ENGS 22 — Systems

Laplace Table

Page 4

F(s)

f(t)

1

0

30.

]

)

)[(

(

1

2

2

b

a

s

c

s

s

+

+

+

2

2

2

2

2

2

2

2

)

(

)

sin(

]

)

[(

)

(

1

b

a

c

b

a

b

bt

e

b

a

c

c

e

b

a

c

at

ct

+

+

+

+

+

φ

)

,

atan2(

)

,

atan2(

a

c

b

a

b

+

=

φ

31.

]

)

)[(

(

2

2

b

a

s

c

s

s

s

+

+

+

+

α

)

sin(

)

(

)

(

]

)

[(

)

(

)

(

2

2

2

2

2

2

2

2

2

2

φ

α

α

α

+

+

+

+

+

+

+

+

bt

e

b

a

c

b

a

b

b

a

b

a

c

c

e

c

b

a

c

at

ct

)

,

atan2(

)

,

atan2(

)

,

atan2(

a

c

b

a

b

a

b

=

α

φ

32.

)

(

1

2

a

s

s

+

)

1

(

1

2

at

e

at

a

+

33.

2

)

(

1

a

s

s

+

)

1

(

1

2

at

at

ate

e

a

34.

2

)

(

a

s

s

s

+

+

α

]

)

(

[

1

2

at

at

te

a

a

e

a

+

α

α

α

35.

)

)(

(

0

1

2

b

s

a

s

s

s

s

+

+

+

+

α

α

bt

at

e

b

a

b

b

b

e

b

a

a

a

a

ab

+

+

+

)

(

)

(

0

1

2

0

1

2

0

α

α

α

α

α

36.

]

)

[(

2

2

0

1

2

b

a

s

s

s

s

+

+

+

+

α

α

2

0

1

2

2

2

0

)

[(

1

α

α

α

+

+

a

b

a

bc

c

)

sin(

]

)

2

(

2

1

2

1

2

φ

α

+

+

bt

e

a

b

at

)

,

atan2(

]

),

2

(

atan2[

0

1

2

2

1

a

b

a

b

a

a

b

+

=

α

α

α

φ

2

2

2

b

a

c

+

=

background image

ENGS 22 — Systems

Laplace Table

Page 5

F(s)

f(t)

1

0

37.

]

)

)[(

(

1

2

2

2

2

b

a

s

s

+

+

+

ω

2

1

2

2

2

2

2

2

2

1

]

)

(

4

[

)

sin(

)

/

1

(

)

sin(

)

/

1

(

ω

ω

φ

φ

ω

ω

+

+

+

+

+

b

a

a

bt

e

b

t

at

)

,

2

atan2(

2

2

2

1

ω

ω

φ

+

=

b

a

a

)

,

2

atan2(

2

2

2

2

ω

φ

+

=

b

a

ab

38.

]

)

)[(

(

2

2

2

2

b

a

s

s

s

+

+

+

+

ω

α

)

sin(

)

(

1

1

2

1

2

2

φ

ω

ω

α

ω

+

+

t

c

)

sin(

]

)

(

[

1

2

2

1

2

2

φ

α

+

+

+

bt

e

c

b

a

b

at

2

2

2

2

2

)

(

)

2

(

ω

ω

+

+

=

b

a

a

c

)

,

2

atan2(

)

,

atan2(

2

2

2

1

ω

ω

α

ω

φ

+

+

=

b

a

a

)

,

2

atan2(

)

,

atan2(

2

2

2

2

ω

α

φ

+

=

b

a

ab

a

b

39.

]

)

[(

2

2

2

b

a

s

s

s

+

+

+

α

)

sin(

]

)

(

[

)

2

1

(

1

2

1

2

2

φ

α

α

α

+

+

+

+

bt

e

bc

a

b

c

a

t

c

at

2

2

b

a

c

+

=

)

,

atan2(

)

,

2atan2(

a

b

a

b

+

=

α

φ

40.

)

)(

(

2

0

1

2

b

s

a

s

s

s

s

+

+

+

+

α

α

at

e

a

a

b

a

ab

b

a

ab

t

+

+

+

)

1

(

1

)

(

)

(

2

0

1

2

0

0

1

α

α

α

α

α

bt

e

b

b

a

b

+

)

1

(

1

2

0

1

α

α


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