Speaker Details

Speaker Company

Mitchell Marks

Mitch has worked in electric motor development for nine years and specializes in the test and measurement of traction motors and drives. He focuses on developing new testing techniques and accelerating the development process through testing. He has been with HBK since 2017 as a member of the electric power testing team. He has an undergraduate and a master's degree in electrical engineering from the University of Wisconsin – Madison WEMPEC program.


Understanding measurement uncertainty for electric drive

To optimize the performance of an electric powertrain, its efficiency must be verified with measurements both during development and in operation. These measurements will have an associated measurement uncertainty (MU) due to the accuracy of the measuring device and the environmental conditions of the test. The MU indicates the probability that a measurement result is in a specified interval around the ‘true’ value. The measurement result, therefore, generally does not match the actual value, so each real measurement is subject to a certain measurement deviation/error. This measurement error propagates from the measured quantities to other quantities calculated from these.