KL3083 Lecture 04 project.ppt

7/27/2019 KL3083 Lecture 04 project.ppt

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KL 3083RekaBentuk Sistem

Lecturer In-charge:Hilmi Sanusi

The Team:Prof. AlauddinProf KasmiranHilmi Sanusi

The Secretary:Fazilah Kamil

.


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Projects

Input

(sensors)

Process(micro-

controller)

Output(Actuators)

Interface

(A/D)

- analog input

Interface

(D/A)


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Projects (cont - 1)

Input

Analog input

Require adc (built in..?)

Resolution, sampling etc

Digital input

TTL logic level Making input TTL compatible else u_controller

cant read your data


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Projects (cont - 2)

Process

Calculation

Logic operation

Decision making

C / C++

Simulation, emulation etc


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Projects (cont - 3)

Output

Analog

Actuators (motors, light etc)

Speed, intensity etc

Digital

Buzzer, relay, On/off


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Projects (cont4)

Project cost < RM 25 excluding the microcontroller

Prototype may cost more but end productsmust cost less

Reduce costbuilt your own sensors and

actuators Perform cost reduction step trough

innovative iteration


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Requirements

AnalysisINPUTS

Functional

Analysis/

Allocation

Design

Synthesis

Analysis &

ControlVerif ication

Loop

Requirements

Loop

DesignLoop

OUTPUTS


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Projects (cont6)

Set input requirements

Make sure the sensors are able to perform the

input requirements

Make sensor as simple as possible, let the

micro-controller do the thinking

Set output requirementsSimplify the output presentation


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Define User

Needs

Define System

Requirements

Allocate System

Functions to

Subsystems

Detail Design

of Components

Verify

Components

Verification of

Subsystems

System

PerformanceVerification

System

Operational

Verification


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System Engineering

(Technology management) Definitions of System Engineering

Structure: management technology

to assist in the formulation, analysisand interpretation of the impacts ofproposed policy, controls, andsystems on the needs, institution and

values under investigation


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Definitions of System Engineering

Function: Methods and Tools

to support analysis of large-

scale, dynamic and complexsystems,

to support process-oriented

management practice andto provide effective & efficienttrade offs among alternatives


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Definitions of System Engineering

Purpose: For engaging in systemengineering

To develop information and knowledge

organization To support definition, development and

deployment of total systems to assure integration and high quality

relative to reliability, availability,maintainability, operability others_ilities.


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Systems Engineering

Functions Formulation of the System

Needs to be fulfilled

Requirements & Objectives

Constraints and Degrees of Freedom Alternatives to above

Analysis Determine the impact of varied alternative courses of

action

Determine the course of least constraint Determine the risk mitigation strategy

Interpretation of Analysis Rank Order, Bias & Uncertainty Assessment


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Steps and Phases

Formulation

Analysis

Interpretation


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Steps/Perspectives for System Engineering

(Formulation) Formulation of the System

Needs to be fulfilled

Requirements & Objectives

Constraints and Degrees of Freedom Alternatives to above

Value System Design

Identification of the objectives and goals that guide alternativeselection

Definition of multi-dimensional attributes or decision criteria Identification and validation of objective measures

System Synthesis

Generation of alternative course of action and associated measuresof effectiveness


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Identification of Need

Gap

New Techniques

New System Requirements added

System Requirements Change Priority

Political Views Shift

Involve the customerunless the customer haschanged as well


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What are the Functions Applied

To? Design, Develop, Deploy Systems

Large in Scale

Large in Scope

Large in Range of Impact System Types

Physical Systems

Human & Organizational Systems

Enterprise Systems

Information Systems

Systems of Systems Aerospace examples


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What is a System?

Group of Components that worktogether for a purpose Service

Product

Process

Attributes: discernable manifestations

of the components Relationships are links betweenComponents & Attributes


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Components Properties

Properties & Behavior of each Component has an

influence on the properties & behavior of the set

as a whole Properties & Behaviors of each component of the

set depends on the properties & behaviors of at

least one other component

Each possible subset of the components has the

two properties listed above: I.E. the components

cannot be divided into independent subsets


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When you decompose what do you get?

Components

Structural: Static Elements of a System

Operating: Perform Processing

Flow: Materials and energy or information

being altered by system operations


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How can system be known?

State of a System Collection of variables that describe a

system from a perspective and at specific

time Variation in perspective

Variation in temporal resolution

System Engineering Knowledge Principles

Practices

Perspectives


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How is a System Understood ?

Decomposition

Analysis

Aggregation

More than the sum of its parts

Emergent

Self-organizing

Entropic and Enthalpic

The thermodynamic function of a system is equivalent tothe sum of the internal energy of the system plus the

product of its volume multiplied by the pressure exerted onit by its surroundings


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What are criteria for System Quality ?

Efficient & Effective in

Production

Use

Maintenance

Retrofit


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Feasibility Analysis

Identify Possible System level Approaches

Eval for

Performance Effectiveness

Manufacturability

Maintenance

Logistics Support Recommend a course of action

(a few)


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Identify Constraints

Limit Your Options

Specifications that must be met

Integration Standards that are mandated Cost & Schedule Limitations

Missing Information

Missing CodeMissing Service Oriented Architecture (SOA)

Life Cycle Issues Identified


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System Requirements

System Specification

Software System

Hardware

Test Equipment

Simulation Reqs

Range Reqs

Integration Reqs

Data Reqs

ManagementRequirements

Program PlanningControl

Version Control

Test DataDissemination

Integration

Reporting

Technical Management


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Technical Performance Measures

Design Dependent Parameters

Quality Function Deployment

Belies the waterfall approach

House of Quality Approach

Six sigma etc


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Documents

KL3083 Lecture 04 project.ppt