A Robust Current Controller for Uncertain Permanent Magnet Synchronous Motors with a Performance Recovery Property for Electric Power Steering Applications

Yonghun Kim, Hyung-Tae Seo, Seok-Kyoon Kim and Kyung-Soo Kim
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Yonghun Kim: Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 291, Korea
Hyung-Tae Seo: Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 291, Korea
Seok-Kyoon Kim: Department of Creative Convergence Engineering, Hanbat National University, Daejeon 341-58, Korea
Kyung-Soo Kim: Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 291, Korea

Energies, 2018, vol. 11, issue 5, 1-17

Abstract: This paper presents a robust current tracking controller for permanent magnet synchronous motors (PMSMs) with a performance recovery property for electric power steering (EPS) applications. The contributions of this work are twofold. First, a disturbance observer (DOB) is designed to compensate the disturbances arising from the model–plant mismatches while reducing the closed-loop sensitivity. Second, a current controller is designed to improve the current tracking performance in the frequency domain by assigning the performance recovery property to the closed-loop system. The closed-loop performance is verified through simulations and experiments using a 500 W PMSM connected to an EPS system.

Keywords: permanent magnet synchronous motor (PMSM); electric power steering (EPS); current control; performance recovery (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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