2-Drive Motor Control Unit for Electric Power Steering

Paper #:
  • 2017-01-1485

Published:
  • 2017-03-28
DOI:
  • 10.4271/2017-01-1485
Citation:
Hiramine, M., Hayashi, Y., and Suzuki, T., "2-Drive Motor Control Unit for Electric Power Steering," SAE Int. J. Passeng. Cars – Electron. Electr. Syst. 10(2):337-344, 2017, https://doi.org/10.4271/2017-01-1485.
Pages:
8
Abstract:
The electric power steering (EPS) is increasing its number since there are many advantages compared to hydraulic power steering. The EPS saves fuel and eliminates hydraulic fluid. Also, it is more suitable to the cooperation control with the other vehicle components. The EPS is now expanding to the heavier vehicle with the advance in the power electronics. In order to meet customer's needs, such as down-sizing, lower failure rate and lower price, we have developed the new motor control unit (MCU) for the EPS. The motor and the electric control unit (ECU) were integrated for the better installation. We adopted new technologies of redundant 2-drive design for more safe EPS. “2-drive Motor Control technology” which consists of dual winding, two torque sensors and two inverter drive units. In our developed MCU, even if there is a failure in one of the drive unit, the assistance of the EPS can be maintained with the other drive unit.
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