Problem 1: Each row in the table below defines the parameters for an inverted crank-slider mechanism, as illustrated in the figure. For the given input angle θ2 and input velocity ω2 of each linkage, it is desired to find the coupler angle, θ3, the output angle, θ4, the length of Link 3, b, and the slip velocity, b? . Create a MATLAB inverted-crank-slider GUI and find the solutions for rows b,d,f. Find the open and crossed solutions for each case and record your answers in the table on the following page. Submit your MATLAB GUI files on Canvas: inverted_crank_slider.m and inverted_crank_slider.fig.
| Row |
Link 1 |
Link 2 |
Link 4 |
γ
|
Θ2
|
ω2
|
| a |
6 |
2 |
4 |
90 |
30 |
10 |
| b |
7 |
9 |
3 |
75 |
85 |
-15 |
| c |
3 |
10 |
6 |
45 |
45 |
24 |
| d |
8 |
5 |
3 |
60 |
25 |
-50 |
| e |
8 |
4 |
2 |
30 |
75 |
-45 |
| f |
5 |
8 |
8 |
90 |
150 |
100 |
|
Row
|
Solution
|
θ3
(deg)
|
θ4
(deg)
|
b
( )
|
b?
( /s)
|
|
b
|
Open
|
|
|
|
|
|
Crossed
|
|
|
|
|
|
d
|
Open
|
|
|
|
|
|
Crossed
|
|
|
|
|
|
f
|
Open
|
|
|
|
|
|
Crossed
|
|
|
|
|
Problem 2: Modify your fourbar GUI from PS#11 to allow the user to add a driver dyad. The GUI would need to allow the user to specify the coordinates of the extra ground pivot in addition to the dyad link lengths. The user should then be able to control the dyad crank angle to drive the linkage. Demonstrate the functionality of your GUI using the linkage you designed in Problem 5 of PS#10. Submit your MATLAB GUI files on Canvas: sixbar.m and sixbar.fig.
Problem 3: Create a totally awesome MATLAB linkage GUI that knocks my socks off with its advanced functionality, cool graphics, and slick user interface. Perhaps it could do some combination of analysis and synthesis. Maybe the user could click on the plot to synthesize/move the linkage. Get creative! Points will be awarded in proportion to how impressed I am. Submit your MATLAB GUI files on Canvas: awesome_linkage_GUI.m and awesome_linkage_GUI.fig. Provide user instructions in a PDF file if necessary. Submission deadline (for this problem only) may be extended upon request.