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Journal Article
Robust Position Control for an Electrical Automatic Transmission under Gear-Shifting Link Friction
- Authors
- Junghyun Kim, Jung Hyun Choi
- Issue Date
- 2023-11
- Citation
- ELECTRONICS, v.12, no.21, pp.1-13
- ISSN
- 2079-9292
- Publisher
- MDPI
- Language
- English
- Type
- Journal Article
- Abstract
- The automotive industry is evolving, with software becoming a vital part of vehicles. Conventional automakers are shifting to software-centric entities, embracing over-the-air (OTA) updates and service-centric models. To move software-driven vehicles, the vehicle must also be electrified. Several automobile manufacturers are electrifying vehicle parts, and recently, a gear shift selector for automatic transmissions was adapted from mechanical to electronic. However, as conventional mechanical systems are modified to electrical systems, problems such as shift delay and accuracy emerge. This study addresses these problems that emerge in the electronic system type of automatic transmission, including a gear shift selector developed to electrify automobiles. Accordingly, we first analyze the structure of automatic transmission systems, then define the operation sequence. Next, a novel position control algorithm based on a disturbance observer is proposed to reduce shift delay and increase accuracy. The proposed algorithm operates harmoniously with the vehicle control unit (VCU). To verify the proposed algorithm, a hardware-in-the-loop simulation (HILS) was developed to experiment with vehicle shifting using a commercial electronic gear shift selector. Moreover, the proposed control algorithm for gear shifting in an automatic transmission was analyzed using experimental results obtained by assuming a specific driving situation in the HILS.
- KSP Keywords
- Automatic transmission, Automotive Industry, Electrical systems, Electronic systems, Gear Shifting, Hardware-In-the-Loop simulation, Over-the-air(OTA), System type, Transmission system, Vehicle control unit, automobile manufacturers
This work is distributed under the term of Creative Commons License (CCL)
(CC BY)
(CC BY)
