In order to comply with game rules, the entire subsystem was required to start with the frame perimeter of the robot, therefore the skid plate was designed to securely stay in place surrounding (and also protecting) the battery for the majority of the game. Only once the direction of force of the pneumatic actuators is reversed with the click of a button by the driver would the component be deployed.
This mechanism was designed to be robust to withstand a high speed collision with platform. To maintain a robust integration between the raw skid plate and the activating component we specifically chose pneumatic actuators which allowed the skid plate to extend first outside of the frame perimeter and lower into position, and more importantly retract once in this position and latch around and into the frame in order to direct force transfer through the robust frame rather than a comparatively weak pneumatic piston.
Platform Height: 6 inches
Robot Weight: 100 lbs
Time Allotted: Final 10 seconds
Once the mechanism had been fabricated and assembled onto the robot for testing one of our design concerns was verified. Although the skid plate allowed the front of the robot to initiate contact with the top of the platform and occasionally pull itself up onto the platform, it was not reliable enough to compete with. Thus, a pair of pneumatic pistons were attached opposite of the skid plate and programmed to actuate at the touch of a button. This allowed the front two wheels to come into a larger normal contact with the platform and drive the robot forward. As a result of the various iterations and relentless pursuit of our goals Clementine's Skid Plate became one of the most reliable mechanisms on our robot and across FRC with a 90% success rate and cimb time's that rivaled the fastest eitjsrs.