Improvement of both handling stability and ride comfort of a vehicle via coupled hydraulically interconnected suspension and electronic controlled air spring

Qi, Hengmin; Chen, Yuanchang; Zhang, Nong; Zhang, Bangji; Wang, Dong; Tan, Bohuan

doi:10.1177/0954407019856538

Cited by 64 publications

(42 citation statements)

References 43 publications

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“…A quarter car dynamic model is built to research the vertical vibration as shown in Figure 11. In the model, the stiffness and damping are considered as constant parameters [36,37]. For different vehicles, they have the same quarter car model but with different parameters.…”

Section: Vertical Vibration Analysismentioning

confidence: 99%

Comparison on Energy Economy and Vibration Characteristics of Electric and Hydraulic in-Wheel Drive Vehicles

et al. 2021

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This paper compares the energy economy and vertical vibration characteristics of in-wheel drive electric vehicles (IEVs), in-wheel drive electric hydraulic hybrid vehicles (IHVs) and centralized drive electric vehicles (CEVs). The dynamic programming (DP) algorithm is used to explore the optimal energy consumption of each vehicle. The energy economy analysis shows that the IEV consumes more energy than the CEV due to its relatively lower electric motor efficiency, even with fewer driveline components. The IHV consumes much more energy than the IEV and CEV because of the energy loss in the hydraulic driveline. The vertical vibration analysis demonstrates that both IEV and IHV degrade the vehicle driving comfort due to increased unsprung mass. Taking the advantage of high power density of the hydraulic motor, IHV have less unsprung mass when compared with the IEV, which helps to mitigate the vibration problems caused by increased unsprung mass.

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Section: Vertical Vibration Analysismentioning

confidence: 99%

Comparison on Energy Economy and Vibration Characteristics of Electric and Hydraulic in-Wheel Drive Vehicles

et al. 2021

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“…In the early studies, time delays were treated as adverse factors, in which investigators usually identified and compensated for the time delay, such as the methods of Pade approximation processing and sliding mode control [ 1 , 2 , 3 , 4 , 5 ]. In engineering practice, Su and Tang et al [ 6 ] studied the damping control of active suspension systems with input delay, and proposed a variable substitution method to convert the active suspension systems with input delay into the systems without formal delay [ 7 , 8 , 9 , 10 , 11 ]. Wu and Zhou et al [ 12 ] conducted a study on the active vibration damping control of a concrete pump car arm frame based on the time-delay compensation method.…”

Section: Introductionmentioning

confidence: 99%

Vibration Control of Time-Varying Delay under Complex Excitation

Ren

Chen

et al. 2021

Micromachines

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The existing available research outcomes on vibration attenuation control for time-delay feedback indicate that, for the delay dynamic vibration absorber with fixed time-delay control parameters, under harmonic excitation, a good vibration attenuation control effect occurs on the vibration of the main system. However, the effect is not obvious for complex excitation. Aiming at the above problems, in a short time interval, a harmonic excitation with the same displacement size as the complex excitation was established. Then, by calculating its equivalent amplitude and equivalent frequency, a harmonic equivalent method for complex excitation was proposed in this paper. The time-delay parameters were adjusted according to the equivalent frequency of harmonic equivalent excitation in real time; therefore, a good vibration attenuation control effect was obtained through the delay dynamic vibration absorber in the discrete time interval. In this paper, research on a time-varying delay dynamic vibration absorber was conducted by taking the two-degree-of-freedom vibration system with a delay dynamic vibration absorber as an example. The simulation results show that the proposed control method can reduce the vibration of the main system by about 30% compared with the passive vibration absorber. This can obviously improve the performance of the time-delay dynamic vibration absorber. It provides a new technical idea for the design of vehicle active frame system.

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“…Lu et al: Study on compliant actuator based on compliance features of flexible hinges method for the micro-displacement amplification module based on the stiffness target. Shen et al (2013) deduced the magnification calculation formula for the multi-stage lever amplification mechanism by considering the offset of the rotation center of the flexible hinge. Li et al (2011) calculated the output displacement and the amplification gain of the bridge micro-displacement amplification compliant mechanism by the matrix method.…”

Section: Introductionmentioning

confidence: 99%

Study on compliant actuator based on compliance features of flexible hinges

Wang

Zhang

2021

Mech. Sci.

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Abstract. In order to improve the key performance of the compliant actuators, it is necessary to parametrically optimize the compliant actuators based on the compliance features of flexible hinges. A new structural parameter λ, the compliance ratio, which could reflect the sensitivity of the main form of the output displacement, was proposed and analyzed in detail. A compliant lever actuator was developed, and it was optimized by making use of the parameter λ. The optimization was also validated by finite element method (FEM) simulation and experiment. The simulation and experiment results both show that the magnification ratio of the compliant actuator could be enlarged effectively based on the compliance features of flexible hinges. Finally, an actual application of the linear positioning platform that was driven by the compliant lever actuator directly was carried out, and the experiment data also show that the platform with the optimized actuator has different degrees of optimization in terms of the key performance, including the resolution, the motion speed, and the working stroke. It is helpful to develop the compliant actuators and apply it into the precision engineering.

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Improvement of both handling stability and ride comfort of a vehicle via coupled hydraulically interconnected suspension and electronic controlled air spring

Cited by 64 publications

References 43 publications

Comparison on Energy Economy and Vibration Characteristics of Electric and Hydraulic in-Wheel Drive Vehicles

Comparison on Energy Economy and Vibration Characteristics of Electric and Hydraulic in-Wheel Drive Vehicles

Vibration Control of Time-Varying Delay under Complex Excitation

Study on compliant actuator based on compliance features of flexible hinges

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