Sistem Kontrol pada mesin bor Penumatic

(1)

Sistem Kontrol

Teknik Kontrol

(2)

Open-loop Control

Xe1 Xe2 Xe3

Xa1

Xa2

Kontrol



proses di dalam sistem, dimana satu atau lebih

variabel input akan mempengaruhi variabel output

(3)

Open-loop Control

Disturbance z1

Energy flow/ mass flow

Controlled

system

Action loop

Input variable Xe

Disturbance z2 Controlled

output y

(4)

SINYAL

Kontrol harus mengevaluasi dan memproses informasi

umpamanya:

• Tombol tekan yang ditekan atau tidak ditekan.

Informasi tersebut diwakili dengan sinyal.

Sinyal adalah representasi informasi.

• Dalam suatu sistem pneumatik sinyal merupakan

suatu variabel fisik (tekanan pada titik tertentu)

(5)

Variabel sinyal/fisik

1

2

3

6

0 waktu

(6)

Sinyal Analog

1

2

3

6

0 waktu

Posisi pointer

(7)

Sinyal

Digital

1

2

3

6

0 waktu

Displai

Sinyal Digital:

• sinyal yang diberikan melalui suatu nomor kisaran nilai

tertentu dari parameter informasi

(8)

Sinyal Biner

Yes 1

No 0

waktu

tekanan

Sinyal biner:

(9)

Control System

Distinguishing: the form of information representation

Control

system

Binary Control

system

Digital Control

system

(10)

Control System

Distinguishing: the signal processing

Control

system

Asynchronous

control

Synchronous

control

Sequence

control

Logic control

Process

dependent

sequence

control system

Timed sequence

(11)

Control System Chain

Control chain: Signal Flow

Signal Output

Signal Processing: Hardware Breakdown

Signal Input

Signal Processing

Actuating Device

Input Elements

Processing

Elements

Final control

(12)

Control System Chain

Signal Flow

Actuating Device

Processing

Elements (control

elements)

Switches,

Pushbutton, Limit switches,

Program generator, Sensors Directional control valves, Non-return

valves, Pressure valves

Directional control valves Cylinder, Motors, Indicaors

Final control

elements

Input Elements

Switches, _{Pushbutton, Limit}

switches, Program generator, Sensors Contactor,

relays, electronic components

Power contactor, Power transistor, Semiconductor Electric Motors, Solenoid, linear motor