Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7915852 | Universal adaptive torque control for PM motors for field-weakening region operation | Mark M. Harbaugh, Robert J. Breitzmann, Thomas A. Nondahl, Peter B. Schmidt, Jingbo Liu | 2011-03-29 |
| 7609014 | System and method for universal adaptive torque control of permanent magnet motors | Jingbo Liu, Peter B. Schmidt, Thomas A. Nondahl, Mark M. Harbaugh, Robert John Breitzman | 2009-10-27 |
| 7479756 | System and method for protecting a motor drive unit from motor back EMF under fault conditions | John M. Kasunich, Daniel Pixler, Brian T. Concannon, Michael J. Melfi, Mark M. Harbaugh | 2009-01-20 |
| 7355865 | Method and apparatus for rejecting the second harmonic current in an active converter with an unbalanced AC line voltage source | Robert J. Breitzmann | 2008-04-08 |
| 7106024 | Filter with increased first harmonic response and reduced phase shift in a wide frequency band for encoderless drive applications | Mark M. Harbaugh | 2006-09-12 |
| 6831440 | Flux position identifier using high frequency injection | Mark M. Harbaugh | 2004-12-14 |
| 6703809 | Flux position identifier using high frequency injection with the presence of a rich harmonic spectrum in a responding signal | Russel J. Kerkman, Mark M. Harbaugh | 2004-03-09 |
| 6636012 | Stator and rotor resistance identifier using high frequency injection | Mark M. Harbaugh, Russel J. Kerkman | 2003-10-21 |
| 5796236 | Slip adjuster for use in electrical motor controllers | — | 1998-08-18 |