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Study on a novel configuration switchable hydraulically interconnected suspension system under nonlinear model predictive control
Vehicle System Dynamics ( IF 3.6 ) Pub Date : 2021-08-04 , DOI: 10.1080/00423114.2021.1961002
Tong Chen 1, 2 , Minyi Zheng 1 , Nong Zhang 1, 2 , Liang Luo 2 , Pengfei Liu 1, 2 , Weimin Zhong 1, 2
Affiliation  

This paper is a study on a novel configuration switchable hydraulically interconnected suspension (CSHIS) system based on nonlinear model predictive control (NMPC). The proposed CSHIS system has significant improvements in stability and performance than the existing CSHIS systems. The CSHIS system uses a direction valve for configuration switching, and improves the overall vehicle dynamic performances. The developed NMPC algorithm enhances system stability and the actuator control process by predicting system states, and consequently improves dynamic performances and power consumption of the vehicle. A nonlinear CSHIS model is firstly established and discretised to predict system states which are used in the NMPC algorithm. Next, the NMPC-based controller is designed to optimise the actuator control process via two weighting factors which are related to dynamic performance and power consumption, respectively. Finally, numerical simulation and experiments on test bench are conducted to validate the proposed CSHIS system. The simulation results show that the proposed CSHIS system simultaneously improves anti-pitch and anti-roll properties compared with a conventional suspension system by 39.5% and 17.81%, respectively. The experiment results illustrate that the CSHIS system remains stable during and after the configuration switching and optimises the actuator control process by the weighting factors.



中文翻译:

非线性模型预测控制下新型构型可切换液压互联悬挂系统研究

本文研究了一种基于非线性模型预测控制(NMPC)的新型配置可切换液压互连悬架(CSHIS)系统。与现有的 CSHIS 系统相比,拟议的 CSHIS 系统在稳定性和性能方面有显着改进。CSHIS系统采用换向阀进行配置切换,提升整车动力性能。开发的 NMPC 算法通过预测系统状态来增强系统稳定性和执行器控制过程,从而提高车辆的动态性能和功耗。首先建立非线性 CSHIS 模型并对其进行离散化以预测 NMPC 算法中使用的系统状态。下一个,基于 NMPC 的控制器旨在通过分别与动态性能和功耗相关的两个加权因子来优化执行器控制过程。最后,在测试台上进行了数值模拟和实验,以验证所提出的 CSHIS 系统。仿真结果表明,与传统悬架系统相比,所提出的 CSHIS 系统同时提高了抗俯仰和抗侧倾性能,分别提高了 39.5% 和 17.81%。实验结果表明,CSHIS系统在配置切换期间和之后保持稳定,并通过加权因子优化执行器控制过程。仿真结果表明,与传统悬架系统相比,所提出的 CSHIS 系统同时提高了抗俯仰和抗侧倾性能,分别提高了 39.5% 和 17.81%。实验结果表明,CSHIS系统在配置切换期间和之后保持稳定,并通过加权因子优化执行器控制过程。仿真结果表明,与传统悬架系统相比,所提出的 CSHIS 系统同时提高了抗俯仰和抗侧倾性能,分别提高了 39.5% 和 17.81%。实验结果表明,CSHIS系统在配置切换期间和之后保持稳定,并通过加权因子优化执行器控制过程。

更新日期:2021-08-04
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