An Observer-Based Controller Design Method for Improving Air/Fuel Characteristics of
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
seminar class
Active In SP

Posts: 5,361
Joined: Feb 2011
14-02-2011, 10:12 AM

submitted by:
Seibum B. Choi and J. Karl Hedrick

In the urban traffic mode, the engine is known to beoperated mostly in a transient state. However, the wide operatingrange, the inherent nonlinearities of the induction process andthe large modeling uncertainties make the design of the fuelinjectioncontroller very difficult. Even though a sliding modefuel-injection control method is in good agreement with thecharacteristics of the system, the unavoidable large time-delaybetween control action and measurement causes the problem ofchattering. In this paper, an observer-based fuel-injection controlalgorithm is suggested for fast response and small amplitudechattering of the air-to-fuel ratio. The characteristics of theproposed controller are compared with those of other controllers.The proposed controller is simple enough for on-line computationand is implemented on an automotive engine using a PC-386.The simulation and the experimental results show that thisalgorithm reduces the chattering magnitude considerably whilespeeding up the transient response and is robust to modelingerrors.Index Terms—Chatter free, delay effects, engines, fuel injection,observers.
THE method selected to meet the new exhaust emissionsstandards has been to use a catalytic converterthat simultaneously oxidizes and reduces engine emissions.Unfortunately, the efficiency of the catalyst is very sensitiveto the variation of the air-to-fuel (A/F) ratio. Therefore, it isapparent that the main issue of the control of the S.I. engineis to control the fuel-injector(s) to keep the A/F ratio close tostoichiometry (14.7) both in steady-state operation and duringtransients. The steady-state operation is trivial compared tothe transient control, since all the air-induction dynamics andthe fueling dynamics disappear at steady state. However, inthe urban traffic mode, the engine is operated mostly in atransient condition, and this makes the design of a controllervery difficult

download full report

Important Note..!

If you are not satisfied with above reply ,..Please


So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page

Quick Reply
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  email flyer design full report project report tiger 9 27,932 26-02-2015, 03:06 PM
Last Post: oiajecuot
  A Novel Data Embedding Method Using Adaptive Pixel Pair Matching Report project girl 4 1,874 18-09-2014, 03:49 PM
Last Post: Radhika.m
  air ticket reservation system full report project report tiger 22 55,455 23-09-2013, 10:42 PM
Last Post: Guest
  Two Wheels Local Courier System Design Document Report seminar projects maker 0 398 20-09-2013, 04:11 PM
Last Post: seminar projects maker
Last Post: Guest
  Integer Wavelet Transform based Steganographic Method using OPA Algorithm pdf seminar projects maker 0 382 11-09-2013, 04:04 PM
Last Post: seminar projects maker
  A Study on Topological Characteristics of Wireless Sensor Network pdf study tips 0 411 30-08-2013, 04:57 PM
Last Post: study tips
  Hybrid Prediction Method for Solar Power Using Different Computational Intelligence study tips 0 338 19-07-2013, 02:26 PM
Last Post: study tips
  A Secret-Sharing-Based Method for Authentication of Grayscale Document Images pdf study tips 0 430 19-07-2013, 02:09 PM
Last Post: study tips
  Steganography With Region Based on Matching Method Report study tips 0 327 28-06-2013, 03:59 PM
Last Post: study tips