Laplace Transform
Trang 14
PLC Process
Applications
Industrial Text & Video Company 1-800-752-8398
www.industrialtext.com
14
Process Responses and Transfer Functions
t d
A1
A2
t d
A1
A2
t d
td
= = =
t t t
d d d
t0
t0
t0
t0
td
td
td
td
t 0
t 0
t d
PROCESS RESPONSE
t d
t d
A1
t d
t d
A1
= = =
t t t
d d d
Trang 214
Process Responses and Transfer Functions
Industrial Text & Video Company 1-800-752-8398
www.industrialtext.com
4
PLC Process
Applications
A1
− τ
A1
A2
A1
A1
A2
A3
t d
− τ
2 +2ζω
A1
A1
A2
A1
A2
A1
A1
A2
A1
A1
A2
2 +2ζω
A1
A2
ωn
2 t−ψ
⎛ ⎝
⎞ ⎠
τ1
τ2
ωn
ωn
⎛ ⎝
⎞ ⎠
PROCESS RESPONSE
A1
A1
A2
d d d
A3