Mechanical stress and stress compensation in Hall sensors

Silicon magnetic sensors based on the Hall effect have proven to be an excellent sensor choice for many applications, such as position sensing, gear-tooth sensing, contact-less switching and linear sensing. Although a sensor can be trimmed over temperature before it is shipped to the customer, little can be done about the sensitivity's stability once the sensor has been installed in its final application. The goal of this project is to propose and implement mechanisms to stabilize the Hall sensor's sensitivity through the use of mechanical stress feedback and magnetic feedback.

Department dc:contributor.department

Electrical and Computer Engineering

Grantor dc:publisher

Georgia Institute of Technology

Year dc:date.issued

2008

Author dc:creator

• Cesaretti, Juan Manuel

Advisor dc:contributor.advisor

• Brand, Oliver

Committee members dc:contributor.committeemember

• Hasler, Jennifer
• Taylor, William

• Magnetic field
• Open loop compensation
• Piezoresistance
• Piezo-Hall
• Piezoresistive
• Magnetism
• Hygroscopic swelling
• Closed loop compensation
• Humidity absorption

Handle dc:identifier.uri

http://hdl.handle.net/1853/28202

OAI identifier oai:identifier

oai:repository.gatech.edu:1853/28202