system design/engineering, Slides of Systems Engineering

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Introduction to Systems

Engineering

System?

• (^) System is Architecture or collection of technologies serves for set of

users to full fill set of requirements

Basic of the Systems

• (^) Composite of people products and process
• (^) Interacting components – complexity
• (^) Satisfy stated common needs/objective
• (^) Lifecycle

(from design  production  usage  redesign)

• (^) People – manpower, human resources, users & beneficiary
• (^) Products – tangible things
• (^) Process – set of sequenced activities creating products *Stated Objective- Well known objective to everyone. All components works towards satisfying the objective

Systems Engineering

• (^) Two major domains
  1. Technical Domain
  2. Systems Engineering Management
• (^) It is an interdisciplinary field of Engineering and engineering Management
  • (^) Example Aircraft is System
    • (^) Consider its different subsystem/parts
      • (^) Airframe (Aeronautical & Aerospace Engg)
      • Propulsion (Mech. Engg)
      • (^) Control (Mech., Electrical, CS)
      • (^) Communication (Electrical, Electronics TC)
      • (^) Payload (Ergonomics, Humans) All above aspect need to manage together to realize the common stated goal Aspects of SE Management

History and Origin

• (^) The term systems engineering can be traced back to

Bell Telephone Laboratories in the 1940s.

• (^) The need to identify and manipulate the properties of a system as a

whole, which in complex engineering projects may greatly differ from

the sum of the parts' properties, motivated various industries,

especially those developing systems for the U.S. military, to apply

the discipline

Systems Engineering- Definition

• (^) Systems engineering is an
  • (^) interdisciplinary field of engineering and engineering management
  • (^) that focuses on how to design, integrate, and manage complex systems over their life cycles.
• (^) Systems engineering - Def
  • (^) A logical sequence of activities and decisions that transforms an operational needs into a description of system performance parameters and a preferred system configuration. (MIL-STD-499A)- - (^) Initially the SE was targeted in developing the parameters and configurations of the systems - (^) This is done considering the need of customer

Example of Public Acceptability

• (^) Aircraft Concord designed as supersonic commercial aircraft
  • (^) Travel time from US to London is 3 to 4 hours
  • (^) Reduce the time half than that of normal travel
• (^) But Concord was stopped ……..
  • (^) One of the reason is noise level and landing and takeoff of aircraft which was unacceptable

This is the impact of customers acceptability

Current Systems Engineering-

Definition

• (^) Systems engineering - Def
  • (^) Manage and guide the complex engineered systems over the life cycles (Kossiakoff et al., 2011) - (^) Definition is for engineered systems i.e., manmade systems - (^) Manage and guide term are supposed to have all the aspects people, products and processes System Complexity  Diverse components + intricate relationship (ex. Aircraft) Common Objective  Significant Function Engineered Systems  Exclude living things and ecosystems

Systems Engineering Management

Three major activities Development Phasing ( st Phase, where we freeze the objective)  Derives Systems Engineering Process (Systems specification- Objectives that are loosely stated in English get translated to quantitative, measurable and verifiable facts. Team is formed) Life Cycle Integration Customer is integrated into the system