HW11 - ME 375 Out Wed April 15 Due Wed April 22 HOMEWORK 11...

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

View Full Document Right Arrow Icon
ME 375 HOMEWORK 11 Spring 2009 Out: Wed., April 15 Due: Wed., April 22 PROBLEM 1 (35%) In many chemical processes the temperature in a tank has to be maintained within a good degree of accuracy. The block diagram of an open-loop temperature-control system is shown in Fig. (a) and that of a closed-loop system in Fig. (b). Assume that the nominal value of K is 1 for both cases. Fig. 2(a) Open-loop temperature-control system. Fig. 2(b) Closed-loop temperature-control system For each system: a. Determine and sketch the variation of θ (in degrees C) with time t (in seconds) if r(t) is a unit step and the disturbance d(t) is zero. b. Determine the steady-state temperature for a unit step reference input when the disturbance d(t) is zero c. What time must elapse before the temperature reaches 63.2 percent of its final value with d(t) = 0? Normalized temperature θ (t) Temperature sensor d(t) + + Heating System Reference temperature r(t) K 11 0 s + Normalized temperature θ (t) Reference temperature r(t) Heating system Amplifier + a K1 0 0 = K 0 s + T = + + d(t)
Background image of page 1

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

View Full Document Right Arrow Icon
2
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 3

HW11 - ME 375 Out Wed April 15 Due Wed April 22 HOMEWORK 11...

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