Electromagnetic hybrid active-passive vehicle suspension system

Martins, I.; Esteves, M.; Silva, F. Pina da; Verdelho, P.

doi:10.1109/vetec.1999.778470

Cited by 46 publications

(37 citation statements)

References 4 publications

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“…Martins et al [17] have demonstrated that for a hybrid vehicle suspension system, 5 to 1 is a good choice for the ratio of peak passive damping force to peak electromagnetic active force. Based on this ratio, the peak passive damping force and the peak electromagnetic active force are obtained as 1650 and 350 N, respectively.…”

Section: Damping Force Requirementsmentioning

confidence: 99%

A hybrid electromagnetic shock absorber for active vehicle suspension systems

Ebrahimi

Bolandhemmat

Khamesee

et al. 2011

Vehicle System Dynamics

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The use of electromagnetic dampers (ED) in vehicle active suspension systems has drawn considerable attention in the past few years, attributed to the fact that active suspension systems have shown superior performance in improving ride comfort and road handling of terrain vehicles, compared with their passive and semi-active counterparts. Although demonstrating superb performance, active suspensions still have some shortcomings that must be overcome. They have high energy consumption, weight, and cost and are not fail-safe in case of a power breakdown. The novel hybrid ED, which is proposed in this paper, is a potential solution to the above-mentioned drawbacks of conventional active suspension systems. The proposed hybrid ED is designed to inherit the high-performance characteristics of an active ED with the reliability of a passive damper in a single package. The eddy current damping effect is utilised as a source of the passive damping. First, a prototype ED is designed and fabricated. The prototype ED is then utilised to experimentally establish the design requirements for a real-size active ED. This is accomplished by comparing its vibration isolation performance in a 1-DOF quarter-car test rig with that of a same-class semi-active damper. Then, after a real-size active ED is designed, the concept of hybrid damper is introduced to the damper design to address the drawbacks of the active ED. Finally, the finite-element method is used to accurately model and analyse the designed hybrid damper. It is demonstrated that by introducing the eddy current damping effect to the active part, a passive damping of approximately 1570 Ns/m is achieved. This amount of passive damping guarantees that the damper is fail-safe and reduces the power consumption more than 70%, compared with an active ED in an automotive active suspension system.

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Section: Damping Force Requirementsmentioning

confidence: 99%

A hybrid electromagnetic shock absorber for active vehicle suspension systems

Ebrahimi

Bolandhemmat

Khamesee

et al. 2011

Vehicle System Dynamics

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“…The simulation parameters are gathered from varies sources such as [12], [15] Figure.9 shows the instantaneous force from the active suspension. This simulation was carried out with an assumption that the road disturbance is a 5mm sine wave with a frequency of 10Hz.…”

Section: System Simulation and Resultsmentioning

confidence: 99%

“…The dynamic model of one wheel suspension system can be expressed by differential equations [12] https://doi. …”

Section: Simulation Tools and Hydrogen Vehiclesmentioning

confidence: 99%

Development of Energy Saving Mechanism for Renewable Hydrogen Vehicles

Thanapalan¹,

Zhang²,

Procter³

et al. 2024

RE&PQJ

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This paper describes the development of energy saving mechanisms for renewable hydrogen vehicles, thereby providing extended range and improved efficiency. Simulation studies of configuration setup and analysis for better energy management strategies are carried out using simulation tools developed by the University of Glamorgan (UoG), Faculty of Advanced Technology (FAT). The simulation tools are used to analyze the effect of operating conditions and energy demand of a hybrid vehicle. A dynamic model of onboard hydrogen production employing electrolysis energized by electricity recovered from the vehicle's suspension sub-system, is implemented in MATLAB/Simulink™ and integrated with a fuel cell vehicle model. The entire system model is then parameterized to represent a renewable hydrogen fuel cell vehicle for simulation analyses. Simulation results show that by using recovered energy normally lost in damping, appreciable benefits might be accrued from hydrogen production on-board.

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“…While this allows for direct application of the control algorithms to the system, it also requires the active element in the damper to have much higher power requirements than an active system with a spring element. In [24] it is noted that the power consumption for an active hydraulic damper, without a spring element, is 3500W r.m.s. This power consumptions make the use of a damper with a spring element a more attractive proposition than a system without a spring.…”

Section: A Active Em Suspensionsmentioning

confidence: 99%

Electromagnetic damper control strategies for light weight electric vehicles

Fow

Duke

2016

2016 IEEE 14th International Workshop on Advanced Motion Control (AMC)

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Abstract-An investigation is conducted into the performance of passive, semi-active and active electromagnetic dampers. Theoretical models are constructed of the dampers and these are included in two degree of freedom models of the suspension. The passive and semi-active electromagnetic dampers are significantly heavier than commercial hydraulic dampers. In the case of active electromagnetic damper, the reduction in passenger acceleration is 88 percent when compared to passive damper and 61 percent when compared to a semi-active damper. The power consumption is similar to a magnetorheological semi-active damper.

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Electromagnetic hybrid active-passive vehicle suspension system

Cited by 46 publications

References 4 publications

A hybrid electromagnetic shock absorber for active vehicle suspension systems

A hybrid electromagnetic shock absorber for active vehicle suspension systems

Development of Energy Saving Mechanism for Renewable Hydrogen Vehicles

Electromagnetic damper control strategies for light weight electric vehicles

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