Project

# Title Team Members TA Documents Sponsor
58 The Glove
Chenhao Wu
Jiayi Wang
Lei Wang
Luke Wendt design_document0.pdf
design_document0.pdf
final_paper0.docx
final_paper0.docx
presentation0.pptx
proposal0.pdf
video
video
video
Motion tracking technology has been largely used in Virtual Reality Game to offer more engaging experience. Most motion match device enables people to move their hands in virtual world. Based on this, our team think that providing haptical feedback to the contacts with virtual objects enhances the interaction between real world and virtual world.

We plan to build a glove with gyroscope/accelerometer sensors to track the motion of two fingers as well as vibration motors to give feedback to the fingers. Then a micro-controller will collect the raw data from sensors and transmit the data to a computer. The data should be analyzed by a program and an algorithm will calculate the position and movement of fingers as well as output the relative position in virtual world. We will use an existing 3D rendering software to generate the virtual world with a 3-D cubic object and the virtual hand. Conditions like touching the cube and pressing the cube will output a signal sending to a controller to activate the vibration motor on the glove so that to give a haptical feedback to the hand.

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