1 / 10

Bruce Mayer, PE Licensed Electrical & Mechanical Engineer BMayer@ChabotCollege

Engineering 25. Chp3 Tutorial: Prob 3.15 Solution. Bruce Mayer, PE Licensed Electrical & Mechanical Engineer BMayer@ChabotCollege.edu. 4. Quick Solve by Anon. Use Anonymous Function to very Quickly Solve for r min. fminbnd Command.

jude
Télécharger la présentation

Bruce Mayer, PE Licensed Electrical & Mechanical Engineer BMayer@ChabotCollege

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Engineering 25 Chp3Tutorial: Prob 3.15Solution Bruce Mayer, PE Licensed Electrical & Mechanical EngineerBMayer@ChabotCollege.edu

  2. 4

  3. Quick Solve by Anon • Use Anonymous Function to very Quickly Solve for rmin

  4. fminbnd Command • fminbnd finds the minimum of a function of one variable within a fixed interval. • Syntax for this case • [x,fval] = fminbnd(fcn,x1,x2) • [x, fval] = fminbnd(fcn,x1,x2) returns a value x that is a local minimizer; i.e., xmin. of the function that is described in fcn over the interval x1 < x< x2. • fval is the minimum value of the function for the corresponding minimizing x; that is fval = fcn(xmin).

  5. The Function File • area3_15.m

  6. The Command Session

  7. The Sensitivity Plot ~21.37 ~1.49 ~2.35 • +10% on Amin • Amax = 1.1* 19.73 = 21.37 in2 • r →  1.49 – 2.35 in

  8. Comments • The 10% increase in Amin Results in These Changes for rmin • -23% for rlo • +24% for rhi • Thus The change in Area is less than half the change in r. • A is NOT very SensitiveAbout the Minimum Point

More Related