A torque ripple sensor and method for torque ripple sensing and/or mitigation. A piezoelectric sensor is positioned relative to a motor so that torque fluctuations due to torque ripple of the motor are transmitted to the sensor, resulting in strain of a piezoelectric element. A resulting signal can be amplified and conditioned for determining a magnitude of the torque ripple and/or fed into a feedback loop for applying current control or a counter-torque to the motor for torque ripple mitigation.
J. Neely et al., "Torque Ripple Sensor and Mitigation Mechanism," The Curators of the University of Missouri, Oct 2006.
Mechanical and Aerospace Engineering
Electrical and Computer Engineering
Patent Application Number
US 7,117,754 B2
© 2006 The Curators of the University of Missouri, All rights reserved.