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EE 302 - Lecture Slides - Unit_1[1].2 Professional_Engineer

EE 302 - Lecture Slides - Unit_1[1].2 Professional_Engineer...

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Unformatted text preview: Unit 1: The Professional Engineer 1 Objectives Who is an Engineer? What is the Engineering Design Cycle? 2 ABET* Definition of Engineering T h e p ro fe s s io n in wh ic h a kno wle d g e o f th e mathematical and natural sciences g a ine d b y s tud y , e xp e rie nc e , a n d p ra c tic e is a p p lie d with jud g m e nt to d e ve lo p wa y s to utilize , e c o no m ic a lly, th e m a te ria ls a nd fo rc e s o f na ture fo r th e benefit of mankind. * Ac c re d ita tio n Bo a rd fo r Eng ine e ring a nd T e c h no lo g y 3 Engineer what dos it mean? Comes from the Latin word ingenerare which means to create. 4 Engineers vs. Scientists Engineers Engineers solve problems The result of their work is the development and production (or improvement) of a product or process. Scientists attempt to understand how the natural world functions. Result of their work is expansion of knowledge. Final product often publication of a research paper. 5 Scientists The Engineer Solves problems. In an organized manner. Using a basic knowledge of mathematics, physics, chemistry, and the ability to solve complex problems. Engineering is: technical creative exciting challenging difficult 6 Engineers are fun people who can do almost anything! 7 Some Famous Engineers Scott Adams (Dilbert) Yasser Arafat Jimmy Carter Neil Armstrong Alfred Hitchcock Montel Williams (TV) Jair Lynch (Gymnast) http://www.asee.org/precollege/famous.cfm 8 What were the greatest engineering achievements of the 20th century? National Academy of Engineering http://www.greatachievements.org/greatachievements/index.html 9 NAE's Top 20 1. 2. 3. 4. Electrification 1. Highways Automobile 2. Spacecraft Airplane 3. Internet Water Supply and 4. Imaging Distribution 5. Household Appliances 5. Electronics 6. Health Technologies 6. Radio and Television 7. Petroleum and 7. Agricultural Petrochemical Mechanization Technologies 8. Computers 8. Laser and Fiber Optics 9. Telephone 9. Nuclear Technologies 10. Air Conditioning and 10. High-performance *See http://www.greatachievements.org/greatachievements/index.html Refrigeration Materials 10 Engineering Design and Problem Solving 11 Engineering Design ABET Definition: Engineering design is the process of devising a system, component, or process to meet desired needs. It is a decision-making process (often iterative), in which the basic sciences, mathematics, and engineering sciences are applied to convert resources optimally to meet a stated objective. Among the fundamental elements of the design process are the establishment of objectives and criteria, synthesis, analysis, construction, testing, and evaluation. 12 The Engineering Design Cycle Identify a Need Define the Problem Gather Information Develop a Proposed Solution (Design) Implement, Analyze, and Verify the Solution Document the design throughout the process 13 Mars Climate Observer Lost September 23, 1999 The problem arose because two teams working on the Mars mission weren't using the same units of measure. JPL Assumed newtons Lockheed Martin Astronautics used pounds of force Lack of proper conversion meant spacecraft did not enter Mars orbit and was lost 14 Types of Problems You Will See Open-ended Problems Used in laboratories and sometimes in classes Multiple ways to solve problem exist User must choose which one to use Close-ended Problems Typically used in classes Appear at the back of textbooks Focus on teaching the use of a particular technique in solving problems 15 Solving Close-ended Problems Step 1: Identify the goal of the problem Read the Problem Statement carefully Collect the known information. Draw an appropriate diagram, sketch, or circuit to help you visualize the problem. Ask two important questions: What essential information is given and What is to be found? 16 Solving Close-ended Problems Step 2- Select the best solution technique Look at several methods and try to pick an approach that is the most straightforward Clearly define the assumptions made to simplify the problem's solution. Different assumptions may lead to different results, and may strongly affect the final solution. You may find some assumptions are not acceptable. 17 Solving Close-ended Problems Step 3: Carefully construct the equations and solve Using the analytical method you have chosen, arrive at a solution Present the solution in a manner easily followed by other engineers. Show your work Provide enough data so that your solution can be checked. 18 Solving Close-ended Problems Step 4: Verify the solution Check the accuracy of the solution, making sure that you have made no errors. Always ask "Is this solution reasonable?" Just because your calculator or your computer says so does not make it so... Do the units make sense? 19 Program Outcomes in ECE What students are expected to know and be able to do at graduation. What tools and skills we give them to enable them to accomplish Program Educational Objectives. Graduates of the Electrical Engineering Curriculum should be able to design and analyze at least two types of electrical systems including: power transmission systems; communication systems; signal processing systems; control systems; electronic devices and measurement systems. Graduates of the Computer Engineering Curriculum should be able to design and analyze at least two types of digital systems including: general purpose software; system software; computer interfacing systems; computers; combinational and sequential digital circuits. 20 Program Outcomes in EE 302 Use critical thinking to analyze and solve problems in ECE by applying: a) fundamental knowledge in math, science, and engineering. Design and analyze: electrical circuits Prepare and deliver persuasive oral and written communication using current presentation tools. Work in collaborative, multi-disciplinary teams. 21 ...
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