Inertia Parameters Identification of Motor Assembly for Electric Vehicles Based on Modal Test Method

He, Li Zhao; Yu, Peng; Zhang, Tong; Guo, Rong

doi:10.4028/www.scientific.net/amm.470.534

Cited by 4 publications

(1 citation statement)

References 4 publications

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“…[15][16][17] For electric driveline, most researches merely consider the linear dynamic model to compensate the traction motor to alleviate the severe vibration caused by the lower torsional stiffness of the electric driveline. [18][19][20] However, the influence the gear play backlash is seldom considered when designed the active controller of the driveline, which is important for drive comfort improvement in real vehicles. 21 The active damping controllers designed for driveline backlash traversing compensation needs high precise measurements of the torsional angle of the half shaft, which is cost and complicated for productive cars.…”

Section: Introductionmentioning

confidence: 99%

Active oscillation control of electric vehicles with two-speed transmission considering nonlinear backlash

Zhang

Chai

2019

Proceedings of the Institution of Mechanical Engineers, Part K:

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The nonlinear backlash can influence the driveability of the electric driveline due to the lack of the traditional clutches and torsional damper devices. During the stand-start, regenerative braking and gear shift process of the electric drive system equipped with two-speed transmission, the request of transient traction motor change will transverse the powertrain backlash, which will excite the driveline oscillations coupled to the first rigid mode of the entire powertrain, referred as shuffle or shunt. These vibrations are transmitted to the chassis, causing deterioration in passenger comfort. In this paper, the nonlinear driveline model including the traction motor, half shaft, driveline backlash, and car wheel are developed. Then, dual extended Kalman filter method is employed to estimate vehicle mass and half shaft torsional angle of the proposed driveline. Based on the estimated information, a hierarchical architecture of the active oscillation compensation is proposed to alleviate the vibration in both contact and backlash mode. The experimental results show that the estimation method is effective and the vehicle shuffle can be significantly decreased by the developed control algorithm.

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Section: Introductionmentioning

confidence: 99%

Active oscillation control of electric vehicles with two-speed transmission considering nonlinear backlash

Zhang

Chai

2019

Proceedings of the Institution of Mechanical Engineers, Part K:

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In-process monitoring in electrical machine manufacturing: A review of state of the art and future directions

Tiwari

Farnsworth

Zhang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part B:

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Manual operations feature prominently in the manufacture of many electrical machines. Even though high-volume electrical machine manufacture is dominated by automation, several manufacturing operations continue to involve manual intervention because of the complexity of such operations makes them heavily reliant on high dexterity manual skills and experience. However, quality can be variable due to human involvement. Currently, in order to maintain a high precision of control and required tolerances of the final machine, inspection is performed at various steps during manufacturing and assembly. Detecting a defect at these end-of-line tests can result in significant wasted time and costs due to rework or scrappage. The solution to this problem lies in in-process monitoring particularly for error prone manual operations. This paper presents a literature review of the state-of-the-art available techniques and limitations in process monitoring within the context of electrical machine manufacturing. To quantify the degree of manual activities in process monitoring within electrical machine manufacture, a structured survey of UK based companies was conducted, identifying specific error prone manual processes to target, and gaps in inspection. The survey identified that a significant proportion of activities in electrical machine manufacture are manual, or semi-automated with manual interventions. However, literature review revealed only a limited research in in-process monitoring of manual operations in this area. Finally, two case studies are presented where case study 1 presents a framework for digitisation of a variety of manual manufacturing tasks, and case study 2 demonstrates real-time capture, modelling and analysis of deformable linear objects in electrical machine manufacturing.

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Optimization of EV Mounting System Considering Power Train Torsion Control

Zhang

et al. 2015

SAE Technical Paper Series

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Inertia Parameters Identification of Motor Assembly for Electric Vehicles Based on Modal Test Method

Cited by 4 publications

References 4 publications

Active oscillation control of electric vehicles with two-speed transmission considering nonlinear backlash

Active oscillation control of electric vehicles with two-speed transmission considering nonlinear backlash

In-process monitoring in electrical machine manufacturing: A review of state of the art and future directions

Optimization of EV Mounting System Considering Power Train Torsion Control

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