Bill Goodwine's Courses

The wiki page for it is here.

The team assignments are here.

To reserve a pendulum, make sure you are logged into google apps with your ND account and go here.

You may post questions about the project as replies to this post.

Professor,
I cannot figure out how to reserve a time for the pendulums. The calender comes up just fine, and I am signed in to google, but it won't let me create a new event.

jszczud1 wrote:Professor,
I cannot figure out how to reserve a time for the pendulums. The calender comes up just fine, and I am signed in to google, but it won't let me create a new event.

Sorry about that. I didn't have the sharing settings quite right, but now it should be editable.

Professor, for implementing a controller, the example gives the transfer function of the force to the error, instead of the angle to the desired angle like we've done in class. Which one should we implement?

pat wrote:Professor, for implementing a controller, the example gives the transfer function of the force to the error, instead of the angle to the desired angle like we've done in class. Which one should we implement?

You want to control the angle, so the transfer function you really care about is from the desired angle to the actual angle. However, your controller takes the error and decides on the pwm level, so in your code you'll have to program that.

Do have any specific guidelines on how you want the report to be formatted, i.e font size, spacing, section headings? Also do we each turn in our own report or one as a group? Thanks

Professor,
for the zeta that you gave us do you want us to change the value of the zeta in the transfer function so that is that zeta. Do you want us then to change all corresponding data as though we had gotten that zeta when we solved for zeta initially? Also would you want us to graph that transfer function on the graphs that we got when we did ran the four torque values, or would you still want the zeta we initially solved for?
Thanks

limhoff wrote:Professor,
for the zeta that you gave us do you want us to change the value of the zeta in the transfer function so that is that zeta. Do you want us then to change all corresponding data as though we had gotten that zeta when we solved for zeta initially? Also would you want us to graph that transfer function on the graphs that we got when we did ran the four torque values, or would you still want the zeta we initially solved for?
Thanks

No, the zeta you find in the system identification is the damping ratio the pendulum actually has as part of the system. The assigned zeta is the damping ratio I want the closed-loop controlled system to exhibit.