Experimental study on the ride comfort of a crawler power chassis scale model based on the similitude theory

Zhao, Junqing; Wang, Fengchen; Yu, Bin; Tong, P; Chen, Kui-Fu

doi:10.3901/cjme.2015.0306.024

Cited by 7 publications

(3 citation statements)

References 11 publications

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“…IRI normalizes the integration interval to 1 km irrespective of the real interval, so its integration mechanism uses an average operator. Root mean square (RMS) [23] values of frequency weighted acceleration and average absorbed power (AAP) [24] also adopt this average logic. Griffin [25] suggested that using an average operator in the time zone is oversimplistic because it can result in excessive estimation for short durations or apparently unreasonably low estimation for long durations; periods containing different magnitudes, transients, and shocks in varying vibration exposure must be defined.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of passenger comfort with road field test multi-axis vibration

Xu¹,

Chen²,

Liang³

et al. 2020

J. vibroeng.

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Using objective vibration evaluation to produce results highly consistent with real road ride comfort is challenging. The deficiencies in traditional evaluation indices, adopting an average operator, maximum operator, or cumulative operator as the main vibration information integration logic, are reported here through 19 designed road field tests in which major vibration information distribution covers all axes and vibration information is distributed in spacetime in various patterns. A new evaluation index which adopted a combination of maximum and cumulative operator is proposed to overcome these deficiencies and an interactive mechanism which standardized the process of selecting vibration information distributed among axes and spacetime is devised between the localized major vibrations. The results show that the proposed road ride comfort evaluation index is more consistent and accurate than the evaluation indices proposed by ISO 2631-1 and can be used more generally.

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Section: Introductionmentioning

confidence: 99%

Evaluation of passenger comfort with road field test multi-axis vibration

Xu¹,

Chen²,

Liang³

et al. 2020

J. vibroeng.

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show abstract

“…Crawler is a typical off-road vehicle walking type with high traction efficiency, and it also has promising performance on passing, ground adhering and working in severe off-road environments (Zhao et al, 2014, 2015). Thus, the crawler vehicle is ubiquitously adopted in construction machinery, agricultural machinery and robotics (Inoue et al, 2004; Solgi et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Intelligent optimal control for the crawler vehicle with semi-active suspension using modified staged continuous tabu search algorithm

Wang

Sun

et al. 2017

Transactions of the Institute of Measurement and Control

Self Cite

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This paper proposes a novel intelligent optimal control strategy for crawler vehicles with semi-active suspension. The proposed control strategy aims at improving vehicle ride comfort by addressing contradictory suspension properties requirements of ride comfort and handling stability simultaneously. After establishing seven degrees of freedom dynamic model of the crawler vehicle, a comprehensive evaluation index is developed to trade off among various vehicle performances, which include ride comfort, damper thermal reliability, elastic element fatigue and handling stability. Then, using modified staged continuous tabu search (MSCTS) algorithm, the optimal control efforts of semi-active suspension, damping ratios, are determined by minimizing the cost function defined by the comprehensive evaluation index. Demonstrated by simulations with triangle convex block and random ground roughness excitations, MSCTS control strategy can successfully improve ride comfort performance and achieve the optimal comprehensive performance as well.

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“…Efficient high-precision machining has become an important issue. Technical statistics show that 20%-60% machining errors of the thin-walled parts are caused by the clamping deformation [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Applied Research of the Microstructure Replication Technology

Chen

Zhang

et al. 2013

AMR

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The thin-walled components of aero industries in general have complex structures whose machining accuracy is very difficult to be guaranteed because of the weak rigidness. To resolve the problem of the thin-walled disc clamping deformation, one novel clamping approach with flexible clamping capability is proposed in this paper. The surface morphology measuring systems (SMMS) and fast servo cutting system (FSCS) are developed, and its microstructure morphology duplicating accuracy is experimentally proved to be about 1μm under working environment. The clamping deformation is clarified weaker via flexible clamping approach which makes thin-walled disc morphology uniformly adaptive to the clamp.

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Experimental study on the ride comfort of a crawler power chassis scale model based on the similitude theory

Cited by 7 publications

References 11 publications

Evaluation of passenger comfort with road field test multi-axis vibration

Evaluation of passenger comfort with road field test multi-axis vibration

Intelligent optimal control for the crawler vehicle with semi-active suspension using modified staged continuous tabu search algorithm

Applied Research of the Microstructure Replication Technology

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