lec13-handout-6up

Lec13-handout-6up - 6.003 Signals and Systems Lecture 13 1 6.003 Signals and Systems CT Feedback and Control Mid-term Examination#2 Tomorrow

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 6.003: Signals and Systems Lecture 13 October 27, 2009 1 6.003: Signals and Systems CT Feedback and Control October 27, 2009 Mid-term Examination #2 Tomorrow, October 28, 7:30-9:30pm, Walker Memorial. No recitations tomorrow. Coverage: cumulative with more emphasis on recent material lectures 1–12 homeworks 1–7 Homework 7 includes practice problems for mid-term 2. It will not collected or graded. Solutions are posted. Closed book: 2 pages of notes ( 8 1 2 × 11 inches; front and back). Designed as 1-hour exam; two hours to complete. Feedback and Control Feedback is pervasive in natural and artificial systems. We have previously investigated feedback in DT systems. Example: robotic steering + plant controller sensor x [ n ] y [ n ] − n y [ n ] Feedback and Control Today: investigate continuous-time feedback and control. Examples: • improve performance of an op amp circuit. • control position of a motor. • reduce sensitivity to unwanted parameter variation. • reduce distortions. • stabilize unstable systems − magnetic levitation − inverted pendulum Op-Amp Much of the utility of op-amps depends on their having high gain. Ideal op-amp: lim K → ∞ V + V − V o = K ( V + − V − ) K Op-Amp The gain of an op-amp depends on frequency. 10 2 10 3 10 4 10 5 1 10 10 2 10 3 10 4 10 5 10 6 ω [log scale] | K ( jω ) | [logscale] − π 2 1 10 10 2 10 3 10 4 10 5 10 6 ω [log scale] ⚢ K ( jω ) | Frequency dependence of LM741 op-amp. 6.003: Signals and Systems Lecture 13 October 27, 2009 2 Check Yourself What system function has this frequency response?...
View Full Document

This note was uploaded on 08/24/2011 for the course EECS 6.003 taught by Professor Dennism.freeman during the Spring '11 term at MIT.

Page1 / 5

Lec13-handout-6up - 6.003 Signals and Systems Lecture 13 1 6.003 Signals and Systems CT Feedback and Control Mid-term Examination#2 Tomorrow

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online