《工程科学学报》录用稿，htps:/doi.org/10.13374/i.issn2095-9389.2021.04.25.002©北京科技大学2020 工程科学学报DO: 一种新型液电式互联馈能悬架的特性分析 秦博男，杨珏四，罗维东，张文明 北京科技大学机械工程学院，北京100083 ☒通信作者，E-mail:yangjue(@ustb.cdu.cn 摘要本文提出了一种可回收车辆振动能量的新型液电式互联馈能悬架系统(Energy-harvesting Hydraulically Interconnected Suspension,EH-HS),并对其垂向、侧倾、俯仰工作模式进行了原理分桁。 基实系统流量关系和压降 原理建立了液电式互联馈能悬架的数学模型，并通过台架试验对仿真模型进行了验途。通过谐波激励下的仿真测试， 对系统的阻尼特性与馈能特性进行了分析，验证了液电式互联馈能悬架的阻尼特性具备非对称性和可调节性，可以 满足大部分乘用车辆的许用范围。当负载电阻从5n增加到25Ω时，相应的等效阻尼系数从7558Nsm降低至 3134Nsm'。馈能特性分析显示当负载电阻等于电机内阻时，系统馈能功率将达到最高值，在2Hz30mm的激励下， 系统平均馈能功率可以达到875.9W。 关键词车辆悬架：互联悬架：非对称阻尼：阻尼系数： 分类号U463.1 能回V Characteristic analysis of energy-harvesting hydraulically interconnected suspension OIN Bo-nan,YANG Jue,LUO Wei-dong,ZHANG Wen-ming School of Mechanical Engineering.University of cience Technology Beijing,Beijing 100083,China Corresponding author,E-mail:yangjue ustb educn ABSTRACT The vehicle suspension system is not only used to consume the vibration energy transmitted from the ground to the vehicle body but also provides good handling stability for the vehicle.This can be a challenging trade-off,especially for vehicles with a high center of gravity and heavy loads,such as trucks and SUVs.These vehicles are prone to large load deviations during emergency steering.causing the vehicle to roll over.The emergence of hydraulically interconnected suspension(HIS)could effectively maintain the vehicle body's stability.As a unique hydro-pneumatic suspension,the HIS system has prominent nonlinear damping characteristics and can decouple the bounce motion and roll motion of the vehicle. It increases the vehicle's roll stiffness without affecting the vertical rigidity of the vehicle,thereby significantly reducing the possibility of follover accidents.This paper introduces a novel energy-harvesting hydraulically interconnected suspension (EH-HIS),which has the dynamic characteristics of the HIS and even can harvest the vibration energy traditionally dissipated into heat by the oil shock absorbers.The working principles of bounce motion,roll motion and pitch motion of the EH-HIS system have been analyzed.A mathematical model of the system was established based on the pressure drop principle and validated by the bench test.The damping characteristics and energy harvesting capability are studied by the simulations.The results show that the EH-HIS has significant asymmetric and tunable damping characteristics,which can meet the allowable range of most passenger vehicles.When the external resistance increases from 5 n to 25 n,the corresponding equivalent damping coefficient decreases from 7558 Ns-m to 3134 Ns-m1.The analysis of energy harvesting capability shows that when the external resistance is equal to the internal resistance,the energy harvesting power achieves the maximum. Furthermore,the average harvesting power can reach 875.9 W under the excitation of 2 Hz 30 mm.工程科学学报 DOI: 一种新型液电式互联馈能悬架的特性分析 秦博男，杨珏，罗维东，张文明 北京科技大学机械工程学院，北京 100083  通信作者，E-mail: yangjue@ustb.edu.cn 摘 要 本文提出了一种可回收车辆振动能量的新型液电式互联馈能悬架系统（Energy-harvesting Hydraulically Interconnected Suspension, EH-HIS），并对其垂向、侧倾、俯仰工作模式进行了原理分析。基于系统流量关系和压降 原理建立了液电式互联馈能悬架的数学模型，并通过台架试验对仿真模型进行了验证。通过谐波激励下的仿真测试， 对系统的阻尼特性与馈能特性进行了分析，验证了液电式互联馈能悬架的阻尼特性具备非对称性和可调节性，可以 满足大部分乘用车辆的许用范围。当负载电阻从 5 Ω增加到 25 Ω时，相应的等效阻尼系数从 7558 Ns·m-1 降低至 3134 Ns·m-1。馈能特性分析显示当负载电阻等于电机内阻时，系统馈能功率将达到最高值，在 2 Hz 30 mm 的激励下， 系统平均馈能功率可以达到 875.9 W。 关键词 车辆悬架；互联悬架；非对称阻尼；阻尼系数；能量回收 分类号 U463.1 Characteristic analysis of a novel energy-harvesting hydraulically interconnected suspension QIN Bo-nan, YANG Jue, LUO Wei-dong, ZHANG Wen-ming School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China  Corresponding author, E-mail: yangjue@ustb.edu.cn ABSTRACT The vehicle suspension system is not only used to consume the vibration energy transmitted from the ground to the vehicle body but also provides good handling stability for the vehicle. This can be a challenging trade-off, especially for vehicles with a high center of gravity and heavy loads, such as trucks and SUVs. These vehicles are prone to large load deviations during emergency steering, causing the vehicle to roll over. The emergence of hydraulically interconnected suspension (HIS) could effectively maintain the vehicle body's stability. As a unique hydro-pneumatic suspension, the HIS system has prominent nonlinear damping characteristics and can decouple the bounce motion and roll motion of the vehicle. It increases the vehicle's roll stiffness without affecting the vertical rigidity of the vehicle, thereby significantly reducing the possibility of rollover accidents. This paper introduces a novel energy-harvesting hydraulically interconnected suspension (EH-HIS), which has the dynamic characteristics of the HIS and even can harvest the vibration energy traditionally dissipated into heat by the oil shock absorbers. The working principles of bounce motion, roll motion and pitch motion of the EH-HIS system have been analyzed. A mathematical model of the system was established based on the pressure drop principle and validated by the bench test. The damping characteristics and energy harvesting capability are studied by the simulations. The results show that the EH-HIS has significant asymmetric and tunable damping characteristics, which can meet the allowable range of most passenger vehicles. When the external resistance increases from 5 Ω to 25 Ω, the corresponding equivalent damping coefficient decreases from 7558 Nsꞏm-1 to 3134 Nsꞏm-1. The analysis of energy harvesting capability shows that when the external resistance is equal to the internal resistance, the energy harvesting power achieves the maximum. Furthermore, the average harvesting power can reach 875.9 W under the excitation of 2 Hz 30 mm. 《工程科学学报》录用稿，https://doi.org/10.13374/j.issn2095-9389.2021.04.25.002 ©北京科技大学 2020 录用稿件，非最终出版稿