Shushing electric motors

Posted by
On November 19, 2007

A UMR mechanical engineer and two of his colleagues have received a patent for a system that could improve the performance of electric motors.

Daniel Stutts, associate professor of mechanical and aerospace engineering, received a patent for a sensor and control system that can minimize the torque ripple that is found in many electric motors and generators.

“Torque ripple, a harmonic variation in motor output torque, contributes to vibration, noise and variation in the drive rotation of machines,” Stutts explains.

Stutts and his colleagues developed an inexpensive piezoelectric sensor to sense the reaction forces through its mounting hardware. “The sensor picks up the torque ripple with very high fidelity, enabling the signal to be used in a feedback control system to mitigate torque ripple,” Stutts adds. “We think it is a competitive option for reducing torque ripple.”

Stutts’ co-inventors are Jason Neely of Sandia National Laboratories in Albuquerque, N.M., and Steven Pekarek of Purdue University.

mm
Posted by

On November 19, 2007. Posted in Research, Winter 2007

Recent Posts

Celebrating 150 Years

Celebrating 150 Years

From hardscrabble, “country academy” roots, how we became a global research university Rolla in [...]
Innovation, the Rolla way

Innovation, the Rolla way

Since our founding, S&T and innovation have been tightly connected. From advances in materials,[...]
Keeping history alive

Keeping history alive

Several authors have written history books about S&T, but no tome can contain all the informati[...]
New book chronicles university's history

New book chronicles university's history

Larry Gragg, Curators’ Distinguished Teaching Professor emeritus of history and political science, [...]
What lies ahead for S&T's next 150 years?

What lies ahead for S&T's next 150 years?

 As Missouri S&T launches its 150th anniversary celebration, the world continues to recove[...]