A method to eliminate unsprung adverse effect of in-wheel motor-driven vehicles

Nie, Shida; Zhuang, Ye; Chen, Fan; Wang, Yong; Liu, Shu

doi:10.1177/1461348418767096

Cited by 25 publications

(18 citation statements)

References 34 publications

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“…The sum of influences of each of the parameters (A, B, C, D) at all four possible levels (1. . .4) on the result quality η is 0, by (6). The influences of three parameter levels can vary and the influence of the fourth parameter level is adjusted for preservation of the sum of the four different influences at 0.…”

Section: ) Low Ss Err Fisher Factors and Confidence Intervalmentioning

confidence: 99%

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Modeling of Insulation Paper Damage in the Assembly of a Solid Slot Winding

Stefe¹,

Jenko

2020

IEEE Access

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Tight assembly of stator windings with no insulation paper damage is a manufacturing challenge. We evaluate different sets of parts according to the following parameters: magnet wire thickness, stator slot smoothness, length of the straight magnet wire after the slot end, and type and amount of insulation cap at the end of the slot. These parameters have discrete values with small differences between them. The damage criterion is the decrease of the insulation paper breakdown voltage after assembly/disassembly of parts, assembled in a small set of designed experiments. Parameter values, i.e., levels at individual experiments are set by an orthogonal experiment matrix. Repetition of each experiment provides statistical significance. Data analysis shows that the additive model alone is not sufficient due to the high correlation of the parameters' influences. We extend the model to include interparameter influences, which we model by adding a virtual parameter. The extended additive model generates parameter values that do not degrade the insulation paper breakdown voltage within the manufacturing process. These values are verified by repetitions of the control experiment. INDEX TERMS Analysis of variance, breakdown voltage, design for experiments, design for manufacture, dielectrics and electrical insulation, extended additive model, insulation paper damage, insulation testing, interparameter influence, in-wheel motor reliability, matrices, metal-insulator structures, orthogonal matrix experiments, permanent magnet motors, stators.

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Section: ) Low Ss Err Fisher Factors and Confidence Intervalmentioning

confidence: 99%

“…The most relevant obstacle for the widespread use of in-wheel motors is its unsprung mass [6]. Motors with some tens of kilograms of mass cannot qualify [7], but they can work perfectly elsewhere.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Insulation Paper Damage in the Assembly of a Solid Slot Winding

Stefe¹,

Jenko

2020

IEEE Access

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“…In another study by Nie and Zhuang 16 , the authors proposed a composed vehicle suspension and a TMD, which are both controlled by a semi-active sliding mode controller aiming to eliminate the unsprung adverse effect as well as improve the ride comfort across the whole frequency spectrum. The results indicated a significant reduction of a car body acceleration response in terms of RMS by 31.2% under sliding mode controller treatment.…”

Section: Introductionmentioning

confidence: 99%

Implementation of an Electromagnetic Regenerative Tuned Mass Damper in a Vehicle Suspension System

2020

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High cost and significant power absorption do not allow exploiting modern active control strategies for improving vehicle suspension performance. Meanwhile, the semi-active control policies are not able to overcome a weighted unsprung adverse effect, which represents a cornerstone of the implementation in-wheel motors for a new type of electric vehicle. This paper discusses and analyses the implementation of a proposed energy-harvesting based tuned mass damper (TMD) to be implemented in electric vehicles. In this manner, a full vehicle suspension model embedded with four TMDs was created to simultaneously enhance the car comfort and road-holding responses with a corresponding large-scale energy harvesting. In the proposed 11-DOFs (degrees-of-freedom) vehicle model, the full-vehicle body was suspended using suspension systems, including the compacted back-iron based design of an electromagnetic TMD. The performed simulations indicated the considerable advantage and potentialities of using the TMDs based suspension. In terms of the RMS (root-mean-square), the car body acceleration was reduced by 21.7%, while the road-holding was enhanced by 5.7%. Moreover, the proposed regenerative electromagnetic tuned mass damper (ETMD) allows for harvesting vibration energy up to 58 W for a vehicle driven on a road class D and a speed of 30 m/s. INDEX TERMS Electromagnetic tuned mass damper, large-scale energy harvesting, random vibrations, vehicle suspension.

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“…Thus, in order to derive the visible performance of the passive TMD applied on the vehicle body, the greater mass of a TMD is required, which leads to an unacceptable for vehicles weighted system. Nie et al 31 proposed a new method to eliminate the unsprung adverse effect of the IEV, which is utilizing a sliding mode controller for both the suspension and the TMD. It was inferred based on the simulations under random road profile that the current approach allows to improve the ride comfort by 31% and road handling by 2.2%.…”

Section: Introductionmentioning

confidence: 99%

“…Nie et al. 31 proposed a new method to eliminate the unsprung adverse effect of the IEV, which is utilizing a sliding mode controller for both the suspension and the TMD. It was inferred based on the simulations under random road profile that the current approach allows to improve the ride comfort by 31% and road handling by 2.2%.…”

Section: Introductionmentioning

confidence: 99%

Back-iron design-based electromagnetic regenerative tuned mass damper

Kopylov

Chen

Abdelkareem

2020

Proceedings of the Institution of Mechanical Engineers, Part K:

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Implementation of tuned mass dampers is the commonly used approach to avoid excessive vibrations in civil engineering. However, due to the absence of the compact dimension, there are still no practical applications of the tuned mass dampers in automotive industry. Meanwhile, recent investigations showed the benefit of utilizing a tuned mass damper in a vehicle suspension in terms of driving comfort and road holding. Thus, the current investigation aimed to explore a novel compact dimension tuned mass damper, which can provide both sufficient vibration mitigation and energy harvesting. This paper presents a prototype of a back-iron-based design of an electromagnetic regenerative tuned mass damper. The mathematical model of the tuned mass damper system was developed and has been validated by the experimental results of the tuned mass damper prototype implemented in a protected mass test-bench. The indicated results concluded that the attenuation performance dramatically deteriorated under random excitations and a reduction in the root-mean-square acceleration of 18% is concluded compared to the case with undamped tuned mass damper. Under harmonic excitations, the designed tuned mass damper prototype is able to reduce the peak acceleration value of the protected structure by 79%. According to the experimental results, the designed tuned mass damper prototype revealed a peak regenerative power of 0.76 W under a harmonic excitation of 8.1 Hz frequency [Formula: see text]m amplitude. Given the simulated random road profiles from C to E, the back-iron electromagnetic tuned mass damper indicated that root-mean-square harvested power from 0.6 to 6.4 W, respectively.

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A method to eliminate unsprung adverse effect of in-wheel motor-driven vehicles

Cited by 25 publications

References 34 publications

Modeling of Insulation Paper Damage in the Assembly of a Solid Slot Winding

Modeling of Insulation Paper Damage in the Assembly of a Solid Slot Winding

Implementation of an Electromagnetic Regenerative Tuned Mass Damper in a Vehicle Suspension System

Back-iron design-based electromagnetic regenerative tuned mass damper

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