Elemen- elemen Sistem Otomasi

8/10/2019 Elemen- elemen Sistem Otomasi

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Elemen Sistem Otomasi

Ade Irman SM

Untirta

2013

Manufacturing Operations

1. Processing & assembly

2. Material handling

3. Inspection & test

4. Coordination & control


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Konsep

Why automation can run a complete process

without human assistance ?

Basic Elements

1. A Program of Instruction

To define process

2. A Control System

To actuate the instruction

3. Power To drive the process & to operate the program &

control system


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Basic Elements

Program of

InstructionControl System Process

Power

Program of Instruction

Cycle Instruction (Work Cycle Program)

Load the part into the machine

Perform the process

Unload the part

Decision Making in The Programmed WorkCycle

Changes in variables


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Control System

The element of the automated system that

executes the program of instruction

A Closed loop control system (Feedback control

system)

An Open loop control system

A Closed Loop Control System

Input

ParameterController Actuator Process

FeedbackSensor

output

variable


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Contoh

A Open Loop Control System

Input

ParameterController Actuator Process

output

variable


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Contoh

?

Basic Power Requirement

Manufacturing Process

Material handling function:

Loading/ unloading

Material/ product transport


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Power

The principle source of power in automated

system is

electricity.

Can be readily converted to alternative energy

forms: mechanical, thermal, light

At low level can be used to accomplish function

such as signal transmission, information

processing, data storage, communication

Can be stored in long life batteries

Alternative Power Sources

Fossil fuel

Solar energy

Water

Wind

Rare in automated system (exclusive use)

In many case alternative power sourced is used,electricity power is still needed

Example: In heat treatment or casting, the furnacemaybe heat by fossil fuel, but the control system toregulate temperature is electrical


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Power for the Common Process

Process Power Form Action Accomplished

Casting Thermal Melting the metal before pouring into a

mold cavity

Electric discharged

machining (EDM)

Electrical Metal removal (cause very high localized

temperature that melt metal)

Forging Mechanical Metal is deformed by opposing dies

ect

The power source is usually converted from electricity

Additional Power Function inAutomated System

Controller unit

To actuate the control signal

Data acquisition and information processing


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Advance Automation Function

Safety Monitoring

Maintenance and Repair Diagnostic

Error detection and recovery

Safety Monitoring

1. To protect human workers in the vicinity of

the system

2. To protect the equipment associated with the

system

Complete stoppage of the automated system Sounding an alarm

Reducing the operation speed

ect


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Maintenance and Repair Diagnostic

1. Status Monitoring

Monitors and records the status of key sensor

2. Failure Diagnostic

To analyze the recorded value preceding the

failure

3. Recommendation of repair procedure

Provide recommendation procedure for repair

Error Detection and Recovery

In control unit (computer)

1. Random error

2. Systematic error

3. Aberration error


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Tugas Kelompok

Buat makalah untuk dipresentasikan, terkait:

Proses produksi suatu produk/jasa

Potensi otomatisasi

Alasan kualitatif

Alasan kuantitatif

Documents

Elemen- elemen Sistem Otomasi