lecture2

lecture2 - MAE 171A: Dynamic Systems Control Lecture 2:...

Info iconThis preview shows pages 1–8. 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

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight 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: MAE 171A: Dynamic Systems Control Lecture 2: Benefits of Feedback and Dynamic System Models Goele Pipeleers Recall from Lecture 1 . . . Two Control Strategies feedforward control system u y feedforward y des disturbances model errors controller design : inverse of system model advantages : * simple, no need for sensors * no problems with stability disadvantages : sensitive to system variations and disturbances 1 feedback control system u y e disturbances model errors sensor y des feedback controller design : based on system model, but more involved that just inverting advantages : less sensitive to system variations and disturbances disadvantages : * more complex, sensor needed * affects stability * inherently slower (compensating instead of preventing the error) 2 combination system y disturbances model errors sensor y des feedback controller u e feedforward controller feedback control: deals with system variations and disturbances feedforward control: provides fast tracking In This Lecture illustrate these statements on a simplified cruise controle example 3 Cruise Control Example objective: use u ( t ) to keep the car velocity at a specified value y ( t ) = r throttle angle input signal u car velocity output signal y simplified static model: u 1 y 10 mph throttle angle input signal u car velocity output signal y 10 4 Feedforward Control design: system inverse 10 system u y . 1 r controller ideal performance: e id ( t ) = r ( t )- y ( t ) = 0 5 effect of disturbance : grade d + 1% y- 5 mph 10 system u y . 1 r- 5 d disturbance dynamics controller e dist ( t ) = r ( t )- y ( t ) = 5 d ( t ) 6...
View Full Document

Page1 / 30

lecture2 - MAE 171A: Dynamic Systems Control Lecture 2:...

This preview shows document pages 1 - 8. Sign up to view the full document.

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