Nonlinear control of direct-drive pump-controlled clutch actuator in consideration of pump efficiency map

Abstract Pump-controlled hydraulic system, compared with the valve-controlled one, has simplified structure and increased efficiency, but the dynamic response is poor. This paper presents a high precision, fast dynamic response, and computational low-cost controller for a novel direct-drive pump-controlled hydraulic system. Firstly, the pump efficiency map is proposed to consider the nonlinear characteristic of the pump due to the time-varying friction and leakage, which makes the control design a challenging task. Then, a triple-step control strategy is proposed to deal with this design difficulty, considering the friction and leakage. Finally, the designed controller is evaluated through simulation and experimental tests. The results show that the settling time is 0.25 s without overshoot and the steady error is within ± 0.1 mm, which are hardly achieved by the traditional control method. The outstanding performance of the proposed system will extend the applications of the pump-controlled hydraulic system, such as to the clutch actuation system of Automated Manual Transmission.

[1]  Tuna Balkan,et al.  Pressure prediction on a variable-speed pump controlled hydraulic system using structured recurrent neural networks , 2014 .

[2]  Darko Lovrec,et al.  Pressure control in hydraulic systems with variable or constant pumps? , 2007 .

[3]  Andreas Kugi,et al.  Nonlinear Model Predictive Control of Axial Piston Pumps , 2017 .

[4]  Li Chen,et al.  Torque Coordination Control During Mode Transition for a Series–Parallel Hybrid Electric Vehicle , 2012, IEEE Transactions on Vehicular Technology.

[5]  Walter Lhomme,et al.  Switched Causal Modeling of Transmission With Clutch in Hybrid Electric Vehicles , 2006, IEEE Transactions on Vehicular Technology.

[6]  M Maarten Steinbuch,et al.  Fast and smooth clutch engagement control for dual-clutch transmissions , 2014 .

[7]  Ping Wang,et al.  Design of a Data-Driven Predictive Controller for Start-up Process of AMT Vehicles , 2011, IEEE Transactions on Neural Networks.

[8]  Maurizio Cirrincione,et al.  Multiple Constrained MPC Design for Automotive Dry Clutch Engagement , 2015, IEEE/ASME Transactions on Mechatronics.

[9]  Mario Pisaturo,et al.  A survey on modeling and engagement control for automotive dry clutch , 2018, Mechatronics.

[10]  Mitja Kastrevc,et al.  Electro-hydraulic load sensing with a speed-controlled hydraulic supply system on forming-machines , 2009 .

[11]  Hong Chen,et al.  Triple-step method to design non-linear controller for rail pressure of gasoline direct injection engines , 2014 .

[12]  Andrew Plummer,et al.  Performance analysis of a new energy-efficient variable supply pressure electro-hydraulic motion control method★ , 2017 .

[13]  Eduardo M. A. M. Mendes,et al.  Hybrid modeling and identification of dry friction systems, application to a clutch actuator , 2010 .

[14]  Hassan K. Khalil,et al.  Singular perturbation methods in control : analysis and design , 1986 .

[15]  W. Scott,et al.  Comparison of an external gear pump wear model with test data , 1996 .

[16]  Shu Wang,et al.  Numerical modelling and analysis of external gear pumps by applying generalized control volumes , 2011 .

[17]  A. Kugi,et al.  Mathematical Modeling and Nonlinear Controller Design for a Novel Electrohydraulic Power-Steering System , 2007, IEEE/ASME Transactions on Mechatronics.

[18]  Miroslav Krstic,et al.  Nonlinear and adaptive control de-sign , 1995 .

[19]  Warren P. Seering,et al.  Preshaping Command Inputs to Reduce System Vibration , 1990 .

[20]  Bingzhao Gao,et al.  Low-Speed Control for Permanent-Magnet DC Torque Motor Using Observer-Based Nonlinear Triple-Step Controller , 2017, IEEE Transactions on Industrial Electronics.

[21]  Andreas Kugi,et al.  Mathematical Modeling and Analysis of a Hydrostatic Drive Train , 2015 .

[22]  Simos A. Evangelou,et al.  Hybrid electric vehicle fuel minimization by DC-DC converter dual-phase-shift control , 2017 .

[23]  Shu Wang,et al.  The Optimal Design in External Gear Pumps and Motors , 2011, IEEE/ASME Transactions on Mechatronics.

[24]  Monika Ivantysynova,et al.  An Investigation of Swash Plate Control Concepts for Displacement Controlled Actuators , 2005 .

[25]  Long Quan,et al.  Review of energy efficient direct pump controlled cylinder electro-hydraulic technology , 2014 .

[26]  Long Quan,et al.  Reduced-order model based active disturbance rejection control of hydraulic servo system with singular value perturbation theory. , 2017, ISA transactions.

[27]  Andreas Kugi,et al.  Nonlinear pressure control of self-supplied variable displacement axial piston pumps , 2010 .

[28]  Xiangyu Wang,et al.  Hierarchical Control of Dry Clutch for Engine-Start Process in a Parallel Hybrid Electric Vehicle , 2016, IEEE Transactions on Transportation Electrification.

[29]  Qifang Liu,et al.  Position Control of Electric Clutch Actuator Using a Triple-Step Nonlinear Method , 2014, IEEE Transactions on Industrial Electronics.

[30]  Xiangyu Wang,et al.  Automatic Clutch Control Based on Estimation of Resistance Torque for AMT , 2016, IEEE/ASME Transactions on Mechatronics.