Pressure control of an electro-hydraulic actuated clutch via novel hysteresis model

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作   者：

Jung, Sanghun;  Choi, Seibum B.;  Ko, Youngho;  Kim, Jinsung;  Lee, Hoyoung; 

作者机构：

Res & Dev Div;  150 Hyundaiyeonguso Ro;  Hyundai Motor Grp;  South Korea;  Dept Mech Engn;  Korea Adv Inst Sci & Technol;  Daejeon 34141;  Hwaseong Si 18280;  Gyeonggi Do;  291 Daehak Ro; 

关键词：

Wet clutch control;  Pressure control;  Electro-hydraulic actuator;  Hysteresis; 

期刊名称：

Control engineering practice

i s s n：

0967-0661

年卷期：

2019 年 91 卷

页   码：

摘   要：

This paper mainly focuses on the development of pressure tracking control logic of electro-hydraulic actuators for vehicle application. This is done to improve and ensure the performance of a precise lower-level controller for evolving modern shift control logic. The required performance is obtained by hysteresis model-based feed-forward control and additional feedback control. The hysteresis and the time delay, which adversely affect pressure control, are well known nonlinear behaviors in electro-hydraulic actuators. In order to cope with the hysteresis, a novel hysteresis model is proposed based on a physical phenomenon. A mathematical model based on a characteristic curve obtained in preliminary experiments is presented using only one tuning parameter, and this model can be inverted easily to construct a feed-forward controller. In addition, a feedback controller is designed considering the stability margin of a time delay system. The feedback control inputs ensure compensation of the feed-forward errors caused by model error and uncertainty. The proposed controller is designed to lower computational cost considering applicability for production vehicles. As a result, the developed pressure controller is applied to a transmission control unit of a production vehicle and verified experimentally for various driving scenarios.