Week 14: New CAD Model

We found some flaws in our recent CAD design and decided to make some changes. One would be a new linkage design utilizing two sets of linkages instead of one. This reduces the stress concentration in the links. We also shortened the vertical length of the design by making the dampening unit a link. FEA analysis will need to be done on the new linkage assembly, which will be done by our next presentation.

Week 13: Active Suspension components

This week we looked into using linear actuators for our suspension to control the pitch leveling of the pod car. After careful research, we found out that an accelerometer, gyroscope, motor driver, and Arduino would be necessary to achieve proper results. Dr. Furman has provided a motor driver for us to use, and a linear actuator was readily available for us to use in Spartan Superway.

Week 12: Revising design on SolidWorks

This week the team worked on developing our new concept to be incorporated into the half-scale suspension on SolidWorks. Our concept is to have the dampening system link not on the bottom like we originally had (Figure 1) but used as the center link to shorten the overall vertical length of the suspension (Figure 2). 
After creating this CAD Model we got to see what are the limitations of our concept design based on the dimensions of our components and the overall form of the parts. We realized after measuring within Solidworks that we need improvement on getting a greater range of pitch angle because we are currently getting 19 degrees in incline and 24 degrees in decline. Also, further development of a modular design needs to be implemented in our design so that we can manufacture with easy and have the opportunity to reiterate the components without needing to cut away. 
We will continue refining our CAD model and start to perform our analysis with FEA in the following weeks.

Week 11: Finalizing our design

We decided to use the dampening system as an actual link to shorten the vertical length of the suspension. A CAD model is currently being worked on and will hopefully be finished by next week. We also plan on continuing our FEA analysis with ANSYS within the next couple of weeks.

Week 10: Presentation 2

This week we gave a presentation to update our peers on our current work. A link to the presentation is below.

Week 9: Presentation Development

This week the 1/12th group presentations were done. They talked about their progress and we got to see some CAD drawings.

Our team met up and began to make our powerpoint slides to showcase where we stand.

Our design will keep with the concept of the linkage but with the addition of a linear actuator in the frame to have control over the pitch swinging. This means that we have a battery, accelerometer, gyroscope, and an Arduino. The linear actuator will work statically (off ) during the longitudinal accelerations and work dynamically ( on ) in cohesion with gravity to pitch-level the pod car as it traverses in inclines or declines.

We will continue to evaluate our design for further improvement. For instance, how we can make the suspension mechanisms shorted in vertical length to be more compact in size.