Assignment

ET410 Assignment 2

Prepare Your Project Proposal

1. Use the Project Proposal Template
2. Fill out completely and turn in to the course instructor in Blackboard and also email it to etcapstone@grantham.edu from your Grantham email address.  The subject line for the email should be “Capstone YourGID - Term”.  If you need assistance, please contact the instructor prior to the due date.
3. Update the Lessons Learned Document and submit with your proposal.  Remember that the template is found in Week 1.  You will be using this template as a running document, adding to it as you go through ET410 and ET450.

ET 495

Assignment 2

The Performance of Feedback Control Systems

1. Watch video “EE495 – Week 2 – Lecture”
2. Read Chapter 5 in the text Modern Control Systems, 12th Edition.
3. Work the following problems:
   1. The closed-loop transfer function of a system is T(s) = 11.1(s +18)/ ((s + 20)(s2 + 4s +10))
      • Plot the poles and zeros of this system and discuss the dominance of the complex poles.  What overshoot for a step input do you expect?
   2. A unity feedback control system has the loop transfer function: L(s) = Gc(s)G(s) = K/(s(s +sqrt(2K))
      • Determine the percent overshoot and settling time (using a 2% settling criterion) due to a unit step input.
      • For what range of K is the settling time less than 1 second?
4. Save work in a file with the title: “HW2_StudentID”, with your student id substituted in the file name.  Show all work for full credit.
5. Upload file “HW2_StudentID”

ET495

Lab 2

The Performance of Feedback Control Systems

1. A closed-loop control system has the transfer function T(s) as follows:  Y(s)/R(s) = T(s) = 2500/((s +50)(s² +10s+50))
2. Use MATLAB to plot y(t) for a step input R(s).
3. Include all MATLAB code and screenshots in a Word entitled “Lab2_StudentID”.
4. Upload file “Lab2_StudentID”