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To be presented to : Mr. Wan Mohd Wardi bin

Wan Abdul Rahman

GROUP MEMBERS

MUHAMMAD HASMADI B. HASSIM

CD100095NG KEI HOACD100333NIK NUR MARDIAH BINTI NIK MD YUSUFFCD100071NOOR ALIAA BINTI NAWAWI

CD100216

FACULTY OF MECHANICAL ENGINEERING AND MANUFACTURINUNIVERSITI TUN HUSSEIN ONN MALAYSIA

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i. To identify the plant parameters, and ii. To determine the transfer function of two

degree of freedom (DOF) rectilinear plant.

i. To configure the two degree of freedomrectilinear plant for system identification

purposesii. Calculate the plant parameters, andiii. Find the transfer function of two degreeof freedom (DOF) rectilinear plant.

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2 DOF

PLANT

FromLaplace

Sum Of AllForces

F=MA

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Also can be expressed in this form for individual componentsof transfer function where is the natural frequency and is the damping ratio

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Spring :Low stiffness = 200N/mHigh stiffness = 800N/m

Encoder 1 & 2 Dashpot Electromechanical plant System interface software Real-time controller & I/O

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Spring stiffness = 200N/m Encoder 1 & 2

With mass (2kg)

Without mass

With dashpot Spring stiffness = 800N/m

Encoder 1 & 2

With mass (2kg)

Without mass With dashpot

Velocity

A total of 13 graphsMust be obtained at

the end of thisexperiment

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With mass took longer time to oscillate andvise versa.

Higher stiffness cause spring to oscillatemore compare to low stiffness.

With dashpot, spring will oscillate lesscompare to without dashpot.

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With mass : High momentum

High vibration

High inertia

Took longer time Low frequency

Low speed

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Without mass low momentum

low vibration

low inertia

Took less time high frequency

high speed

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With dashpot low momentum

low vibration

low inertia

Took shorter time for neutralize high frequency

high speed

Absorb vibration

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K = 200N/m With mass, Encoder #1

Hzstime

cyclesf 062.2

88.3

8

956.12)062.2(2211 fdm Rad/s

112

11

1 m

d

nm

srad/978.12058.01

956.12

2

058.0

80

1400ln

)8(2

1ln

2

10

11

n

mXX

n

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K = 200N/m Without mass, Encoder #1

Hzstime

cyclesf 4

75.1

7

133.25)4(2211 fdm

112

11

1 m

d

nm

srad/206.25076.01

72.2

2

076.0

50

1390ln

)7(2

1ln

2

10

11

n

mX

X

n

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K = 200N/m With mass, Encoder #1

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K = 200N/m Without mass, Encoder #1

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The plant parameters can be determined. The transfer function rectilinear plant can be

identified.

Able to understand the control of vibration oftranslation mechanical system

Understand the application of damper.

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Automatic Train

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Car suspension and absorber system