期刊
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
卷 172, 期 -, 页码 -出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ymssp.2022.108998
关键词
Energy recovery; Ride performance; Parameter sensitivity; Hydraulic integrated interconnected; regenerative suspension (HIIRS); Vehicle dynamics
资金
- National Natural Science Foundation of China [51905394]
- Natural Science Foundation of Hubei Province [2019CFB202]
- Scientific Research Foundation of Wuhan University of Technology [40120551]
This study investigates an innovative hydraulic integrated interconnected regenerative suspension system, which can harvest suspension vibration energy and enhance vehicle handling performance simultaneously. The mode-decoupling problem of the system is studied, a hydraulic model is built and numerical experiments are conducted to demonstrate the system's capability in mode decoupling and its impact on vehicle dynamics and energy harvesting performance.
An innovative hydraulic integrated interconnected regenerative suspension system (HIIRS), which can simultaneously harvest suspension vibration energy and enhance the vehicle handling performance, is studied in this paper. One big challenge for the HIIRS is the mode-decoupling problem among the four vehicle vibration modes, namely bounce, roll, pitch, and warp modes. This paper comprehensively studied why and how the HIIRS could decouple the four modes. Specifically, the nonlinear fluidic model of the HIIRS was built and integrated with a 14DOF nonlinear vehicle model. Based on the model, the damping range and the coupling effects between the damping and the stiffness of the HIIRS were investigated. The roll and pitch stiffness of the HIIRS were calculated, where a novel piecewise-linearizing method was proposed to determine the analytic expression of the stiffness. Numerical experiments were conducted to demonstrate the mode-decoupling capability of the HIIRS and the influence of its parameters on the vehicle dynamics and the energy harvesting performances. In addition, the anti-roll, anti-pitch, and energy harvesting performances of the HIIRS were also studied and compared with a conventional off-road vehicle. The roll angle in a double lance change scenario and the pitch angle in a straight-line braking scenario could be respectively reduced by 34.42% and 28.91% when the initial system pressure in the HIIRS was 40 bar and the load resistance was 10 Omega. The corresponding regenerative power was 87.69 W and 147.86 W for the two cases.
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