ME 321 Homework


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Re: Project Description

Hi guys,
I have my loop closure equation set up for the five bar linkage but I am at a loss as far as coming up with equations from theta3,4,5 without having an unknown angle. I was trying to solve all of them in terms of theta2. Any help would be greatly appreciated.
So you're given the information that link 2 turns with gear 2, and link 5 turns with gear 5. This means that you can relate the angles theta 2 and theta 5 by the gear ratio. For example if your r2 is 5cm and your r5 is 15cm. This means your gear ratio is 3 to 1. For every 3 turns of gear 2, you get 1 turn of gear 5. So if your gear 2 rotates 30 degrees counter clockwise, then your gear 5 will have rotated 10 degrees clockwise (opposite directions because the gears form an external pair). These are your values for theta 2 and theta 5 respectively.

Hello again Dr Quinn,
I'm having some trouble submitting now. I was able to upload a pdf of my code and everything else as images. I'm concerned that there were two different submission and I want to make sure both are viewed and graded. As far as I could tell gradescope will not let you submit a pdf and an image at the same time.
Thanks Matt