Frontiers of Mechanical Engineering
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A brief review on key technologies in the battery management system of electric vehicles
Frontiers of Mechanical Engineering - Tập 14 - Trang 47-64 - 2018
Batteries have been widely applied in many high-power applications, such as electric vehicles (EVs) and hybrid electric vehicles, where a suitable battery management system (BMS) is vital in ensuring safe and reliable operation of batteries. This paper aims to give a brief review on several key technologies of BMS, including battery modelling, state estimation and battery charging. First, popular ......
Design and analysis of a class of redundant collaborative manipulators with 2D large rotational angles
Frontiers of Mechanical Engineering - Tập 15 - Trang 66-80 - 2019
The parallel spindle heads with high rotational capability are demanded in the area of multi-axis machine tools and 3D printers. This paper focuses on designing a class of 2R1T (R: Rotation; T: Translation) parallel spindle heads and the corresponding collaborative 5-axis manipulators with 2-dimension (2D) large rotational angles. In order to construct 2D rotational degrees of freedom (DOFs), a pl......
Creating technical heritage object replicas in a virtual environment
Frontiers of Mechanical Engineering - Tập 11 - Trang 108-115 - 2016
The paper presents innovative informatics methods for creating virtual technical heritage replicas, which are of significant scientific and practical importance not only to researchers but to the public in general. By performing 3D modeling and animation of aircrafts, spaceships, architectural-engineering buildings, and other technical objects, the process of learning is achieved while promoting t......
Laser sintering of Cu nanoparticles on PET polymer substrate for printed electronics at different wavelengths and process conditions
Frontiers of Mechanical Engineering - Tập 15 - Trang 303-318 - 2019
This study explores the feasibility of different laser systems to sinter screen-printed lines from nonconductive copper nanoparticles (Cu NPs) on polyethylene terephthalate polymer film. These materials are commonly used in manufacturing functional printed electronics for large-area applications. Here, optical and thermal characterization of the materials is conducted to identify suitable laser so......
Buckling optimization of curvilinear fiber-reinforced composite structures using a parametric level set method
Frontiers of Mechanical Engineering - - 2024
Owing to their excellent performance and large design space, curvilinear fiber-reinforced composite structures have gained considerable attention in engineering fields such as aerospace and automobile. In addition to the stiffness and strength of such structures, their stability also needs to be taken into account in the design. This study proposes a level-set-based optimization framework for maxi......
Gained switching-based fuzzy sliding mode control for a discrete-time underactuated robotic system with uncertainties
Frontiers of Mechanical Engineering - Tập 16 - Trang 353-362 - 2021
This study proposes a gained switching-based discrete-time sliding mode control method to address the chattering issue in disturbed discrete-time systems, which suffer from various unknown uncertainties. Through the new structure of the designed reaching law, the proposed method can effectively increase the convergence speed while guaranteeing chattering-free control. The performance of controllin......
Optimum design and preliminary experiments of a novel parallel end traction apparatus for upper-limb rehabilitation
Frontiers of Mechanical Engineering - Tập 16 - Trang 726-746 - 2021
Robot-assisted technology has been increasingly employed in the therapy of post stroke patients to deliver high-quality treatment and alleviate therapists’ burden. This paper introduces a novel parallel end traction apparatus (PETA) to supplement equipment selection. Considering the appearance and performance of the PETA, two types of special five-bar linkage mechanisms are selected as the potenti......
Singularity and workspace analysis of three isoconstrained parallel manipulators with schoenflies motion
Frontiers of Mechanical Engineering - - 2012
On the MHD squeeze flow between two parallel disks with suction or injection via HAM and HPM
Frontiers of Mechanical Engineering - Tập 9 - Trang 270-280 - 2014
An analysis has been performed to study the problem of magneto-hydrodynamic (MHD) squeeze flow of an electrically conducting fluid between two infinite, parallel disks. The analytical methods called Homotopy Analysis Method (HAM) and Homotopy Perturbation Method (HPM) have been used to solve nonlinear differential equations. It has been attempted to show the capabilities and wide-range application......
Vibration characteristics and machining performance of a novel perforated ultrasonic vibration platform in the grinding of particulate-reinforced titanium matrix composites
Frontiers of Mechanical Engineering - Tập 18 - Trang 1-17 - 2023
Ultrasonic vibration-assisted grinding (UVAG) is an advanced hybrid process for the precision machining of difficult-to-cut materials. The resonator is a critical part of the UVAG system. Its performance considerably influences the vibration amplitude and resonant frequency. In this work, a novel perforated ultrasonic vibration platform resonator was developed for UVAG. The holes were evenly arran......
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