Project

# Title Team Members TA Documents Sponsor
16 Lug-n-Go
Anika Manzo
Brianna Szczesuil
Gregg Lugo
Mickey Zhang design_review
design_review
design_review
final_paper
final_paper
presentation
presentation
proposal
We plan to design a carry-on sized bag that doubles as a motorized ride-able scooter. Instead of dragging your heavy luggage around the airport or across campus, step on the platform and ride it for a quick and convenient commute.

Rideable luggage is not necessarily a new idea. The Micro-Kickboard is a carry-on with a built-in platform to ride as a manual scooter. The Modobag is currently the only motorized luggage on the market--featuring a design that allows the rider to sit on the bag. Products like the Micro-Kickboard lack the convenience of electrical motors to take the strain off of the user. Stricter TSA guidelines and the staggering price point make Modobag a less viable option.

Essentially, we want to smash these ideas together, while conforming to the TSA restrictions and keeping the price of the product at a much more reasonable range. The motors of the Lug-n-GO will be powered by removable Lithium-Ion batteries. Additional features include a manual mode, where the user can pedal themselves forward and charge the batteries; charging ports for USB devices; and maybe a fingerprint scanner as well to prevent person riding away with someone else’s luggage.

Our design will consist of an off-the-shelf DC motor that is capable of a max speed of 10 mph. We will design our own motor controller system such that the user can squeeze the right lever to go and squeeze the left lever to brake. We will use lithium ion batteries that can easily be removed by the user. Our luggage design will also include a charging dock for the user to charge a phone. To do this, we will design voltage regulators that can adjust the the voltage of the lithium ion batteries to produce an acceptable voltage to charge a phone.

Control System and User Interface for Hydraulic Bike

Iain Brearton

Featured Project

Parker-Hannifin, a fluid power systems company, hosts an annual competition for the design of a chainless bicycle. A MechSE senior design team of mechanical engineers have created a hydraulic circuit with electromechanical valves, but need a control system, user interface, and electrical power for their system. The user would be able to choose between several operating modes (fluid paths), listed at the end.

My solution to this problem is a custom-designed control system and user interface. Based on sensor feedback and user inputs, the system would change operating modes (fluid paths). Additionally, the system could be improved to suggest the best operating mode by implementing a PI or PID controller. The system would not change modes without user interaction due to safety - previous years' bicycles have gone faster than 20mph.

Previous approaches to this problem have usually not included an electrical engineer. As a result, several teams have historically used commercially-available systems such as Parker's IQAN system (link below) or discrete logic due to a lack of technical knowledge (link below). Apart from these two examples, very little public documentation exists on the electrical control systems used by previous competitors, but I believe that designing a control system and user interface from scratch will be a unique and new approach to controlling the hydraulic system.

I am aiming for a 1-person team as there are 6 MechSE counterparts. I emailed Professor Carney on 10/3/14 and he thought the general concept was acceptable.

Operating modes, simplified:

Direct drive (rider's pedaling power goes directly to hydraulic motor)

Coasting (no power input, motor input and output "shorted")

Charge accumulators (store energy in expanding rubber balloons)

Discharge accumulators (use stored energy to supply power to motor)

Regenerative braking (use motor energy to charge accumulators)

Download Competition Specs: https://uofi.box.com/shared/static/gst4s78tcdmfnwpjmf9hkvuzlu8jf771.pdf

Team using IQAN system (top right corner): https://engineering.purdue.edu/ABE/InfoFor/CurrentStudents/SeniorProjects/2012/GeskeLamneckSparenbergEtAl

Team using discrete logic (page 19): http://deepblue.lib.umich.edu/bitstream/handle/2027.42/86206/ME450?sequence=1