Automation systems:
I worked with Northrup Grumman on the USPS - FSS (Flat Sequence Sorter)
I was primarily involved in the structural designs for a set of some eight sheet metal weldment frames featuring a slot / tab and pin alignment technique.
Also included in the contract requirements were the doors and covers protecting the machine operators the requirements of which included E-stop button placement, fault switches, and door and cover kill switches.
Additional requirements included a complete analysis of ergonomics and gas spring placement and alignment to provide lifting assistance and holding the covers open during maintenance or other functional activities such as clearing a jam.
See it in action here