{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Assignment_4_2007_Solutions

From this figure the ult imate period can be

Info icon This preview shows page 1. Sign up to view the full content.

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

Unformatted text preview: is given in Figure 3. From this figure we can appreciate that the Nyquist plot is exactly crossing the crit ical po int (­1;0) thus indicating that this is the critical gain ( k cu ). Critical point Figure 3: Nquist diagram for k cu = 2.4 . The corresponding closed­loop response for the same value o f the controller gain is give n in Figure 4. From this Figure, the ult imate period can be estimated as Pu = 2.5 . From the ZN settings using Table 12.3, we find for a PID controller: k c = 1.44 t I = 1 25 t D = 0 31 ; . ; . Figure 4: Closed­loop response for P controller with k c = 2.4 . Figure 5 illustrates the closed­loop response for a set­point change using the PID­ZN controller settings. Figure 5: Closed­loop set­point response with a PID controller using k c = 1.44 t I = 1 25 t D = 0 31 ; . ; . . 2. For the blending process (see Continuing Problem), and using the transfer funct ions developed in Chapter 5, we would like to implement a feedback control scheme to control the level o f the tank using F1 as manipulated input. F2 , in this case, is a disturbance: 1. Write the characterist ic...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern