Article
Engineering, Industrial
Ziqi Chen, Qian Yu, Keita Shimada, Peng Liu, Yupeng He, Yao Hu, Xibin Wang, Tianfeng Zhou, Masayoshi Mizutani
Summary: This paper proposes an ultrasonic-assisted ultra-precision planing (UAUP) method for the fabrication of blazed gratings. The relationship between processing parameters and grating characteristic dimensions was established, and the feasibility of the UAUP method was verified.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2023)
Article
Engineering, Industrial
Yang Yang, Jinqian Xiang, Zejia Zhao
Summary: This paper proposes a novel nano-grating generation mechanism that incorporates the combined effect of shearing-based material removal and compressive forming-based deformation in elliptical vibration texturing. The dynamic cutting force model reveals the transient cutting mechanics and is validated through experiments. The relationship between cutting force characteristics and nano-grating topography is analyzed to guide optimal trajectory designs for high-quality nano-gratings and smaller cutting forces.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2023)
Article
Engineering, Multidisciplinary
Huawen Zhang, Pingfa Feng, Feng Feng, Jianfu Zhang, Chunjin Wang, Jianjian Wang
Summary: This study utilizes nanoindentation technique to fabricate 2D nanostructures on metallic surfaces, and successfully produces pyramid-type nanostructures. Based on the unique diffraction characteristic of these 2D nanostructures, a high-decoupling optical variable device is fabricated. Furthermore, a structural color-based bidirectional strain sensor is developed by transferring the 2D nanostructures onto a flexible polymer, and its potential application in wireless measurement of mechanical deformation is verified.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2023)
Article
Optics
Jianjian Wang, Yaoke Wang, Jianfu Zhang, Volker Schulze, Ping Guo
Summary: This study proposes new strategies to develop highly decoupled OVDs through vibration-assisted diamond texturing for fast patterning of blazed gratings. A unique surface generation mechanism and orientation of blazed gratings allow flexible control of the concentration direction of diffracted light. By designing orthogonal-type and in-plane-type OVDs, it is possible to encode two images in different cutting directions successfully.
Article
Engineering, Industrial
Naresh Kumar Maroju, Xiaoliang Jin
Summary: This paper presents a new mechanics model of elliptical vibration-assisted machining (EVAM) and quantitatively determines the effect of the horizontal speed ratio on the shear angle, friction reversal, and instantaneous cutting forces in EVAM. The model is validated through experiments on aluminum alloy and Zirconium-based bulk metallic glass, and finite element simulations.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Senbin Xia, Ziqiang Yin, Cheng Huang, Yawen Guo, Chao Zhang
Summary: Elliptical vibration-assisted cutting (EVAC) is an advanced micromachining method that enables results not possible with traditional machining. This study investigates the cutting characteristics of EVAC with variations in tilt angle of the elliptical locus. The effects of tilt angle on cutting forces, chip formation, defects, and surface roughness are observed and analyzed. The experimental results show that the tilt angle has a significant effect on the cutting performance of EVAC.
Article
Engineering, Manufacturing
Jianzhong Chen, Mingming Lu, Jieqiong Lin, Jiakang Zhou, Xifeng Fu, Xiaoqin Zhou
Summary: This paper proposes a grating coloring manufacturing method based on three-dimensional elliptical vibration cutting and non-resonant piezoelectric actuator, and establishes an effective cutting depth model. The nonlinear interaction of machining parameters on the geometry of the grating was analyzed, and experimental results were in agreement with the theory.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2021)
Article
Chemistry, Physical
Dinh-Quan Doan, Te-Hua Fang, Tao-Hsing Chen
Summary: The study revealed that both strain and stress are concentrated at the contact area between the workpiece and cutting tool, as well as at the grain boundaries, under both conventional cutting and ultrasonic elliptical vibration-assisted cutting. Molecular dynamics simulation showed that the temperature of the workpiece is significantly higher under UEVAC, which can facilitate phase transformation and make the cutting process easier. Additionally, the deformation behavior of polycrystalline materials is strongly influenced by grain boundaries, and the cutting force under UEVAC decreases with increasing vibration frequency and amplitude ratio.
Article
Green & Sustainable Science & Technology
Sangjin Maeng, Hiroaki Ito, Yasuhiro Kakinuma, Sangkee Min
Summary: Machining of steel-based alloy and tungsten carbide is challenging due to their hardness. Texturing on the rake face of the tool and ultrasonic elliptical vibration cutting (UEVC) can prolong tool life by reducing wear. This study investigates the cutting performance and tool wear in machining die materials with textured polycrystalline diamond tools under UEVC. The experiments show that UEVC reduces cutting force and improves tool life.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Afifah Z. Juri, Yanzhong Zhang, Andrei Kotousov, Ling Yin
Summary: This study investigates the response of zirconia materials to edge chipping damage induced in conventional and ultrasonic vibration-assisted diamond machining. The results show that the scale of edge chipping damage is influenced by vibration amplitude, and ultrasonic machining can significantly reduce damage caused by brittle fracture.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Engineering, Mechanical
Yang Yang, Jian Wen, Yangkun Zhang
Summary: This paper presents a novel piezoelectrically-driven XZ workpiece vibration generator (WVG) for machining hierarchical micro/nano-structured surfaces. The WVG utilizes a double symmetric configuration and integrates flexural lever mechanisms and a Z-shaped mechanism for dual-stage displacement amplification and motion modulation. Experimental assessments show a positioning resolution less than 20 nm and the capability of delivering various motion trajectories. The developed WVG is integrated into a cooperative vibration cutting system and demonstrates the accuracy and robustness of the mechanism for machining hierarchical grating structures.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Engineering, Manufacturing
Seyyed Sajjad Ahmadpoor, Mohsen Khajehzadeh, Mohammad Reza Razfar
Summary: This study investigates ultrasonic elliptical vibration-assisted turning (UEAT) through experimental study and three-dimensional finite element simulation. The study also compares this process with ultrasonic-assisted turning (UAT) and conventional turning (CT). The effects of elliptical vibrations on cutting forces, friction coefficient, and residual stresses are examined using both experimental tests and finite element simulations. The results show that applying elliptical vibrations in UEAT can significantly increase the compressive nature of machining residual stresses.
MACHINING SCIENCE AND TECHNOLOGY
(2022)
Article
Automation & Control Systems
Zhengjian Wang, Xichun Luo, Haitao Liu, Fei Ding, Wenlong Chang, Liang Yang, Jianguo Zhang, Andrew Cox
Summary: This study focuses on the design and performance analysis of a non-resonant EVC device to overcome the challenge of low operational frequency, achieving a high operating frequency of up to 5 kHz. Experimental tests showed acceptable levels of cross-axis coupling ratio and heat generation in the prototype, demonstrating the machining flexibility and accuracy of the device in generating high-precision microstructures with different wavelengths and heights through tuning operational frequency and input voltage.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Yan Gu, Yishuo Zhang, Jieqiong Lin, Huibo Zhao, Haihang Ma, Hongwei Yao, Mingshuo Kang, Bin Fu, Silin Liu
Summary: In this study, a piezoelectric-driven vibration-assisted UV nanoimprint method was proposed to improve the performance of diffraction gratings. It was found that introducing one-dimensional lateral vibrations with low frequency and low amplitude improved surface quality and filling rate of the grating. The effects of grating properties and vibration parameters were investigated, and a novel asymmetric vibration stage was designed. The method was verified to accurately fabricate diffraction gratings with superior performance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Automation & Control Systems
Qian Su, Guosheng Su, Xuehui Shen, Baolin Wang, Jin Du, Peirong Zhang
Summary: This study proposes an eccentric cone ultrasonic elliptical vibration cutting (UEVC) tool based on mechanical vibration theory, and optimizes its dimensions through finite element analysis (FEA) to achieve low machined surface roughness and low tool wear.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Zhongpeng Zheng, Jianfu Zhang, Pingfa Feng, Jianjian Wang
Summary: Rotary ultrasonic milling is a new and efficient fabrication method for surface microstructures. However, conventional rotary ultrasonic milling suffers from the interference of secondary back-cutting, resulting in poor controllability of the surface geometries. In this study, oblique rotary ultrasonic milling (ORUM) is proposed to improve the process controllability by eliminating secondary back-cut interference. The efficacy of ORUM is verified through experimental results and its potential for industrial applications is demonstrated by fabricating fish-scale microstructures on freeform surfaces.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Mechanical
Hanjie Xiao, Tianrun Li, Liang Zhang, Wei-Hsin Liao, Ting Tan, Zhimiao Yan
Summary: Piezoelectric energy harvesting technology using acoustic metamaterials improves sound energy density and conversion efficiency. A fully coupled electromechanical model is crucial for accurate prediction and optimization of sound energy harvesting based on acoustic metamaterials.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Instruments & Instrumentation
Bao Zhao, Shiyi Liu, Wei-Hsin Liao, Junrui Liang
Summary: The introduction of a switched-mode bidirectional energy conversion circuit (BECC) enables the development of integrated and energy-efficient piezoelectric devices. This study investigates the structural effect and quantifies the damping and energy conversion efficiency of a piezoelectric structure using the BECC. The results demonstrate the tunable damping capability of BECC and its potential for adaptive dynamic control of piezoelectric structures with high energy efficiency.
SMART MATERIALS AND STRUCTURES
(2023)
Article
Multidisciplinary Sciences
Yang Liu, Shiguo Peng, Jiajun Zhang, Kan Xie, Zhuoyi Lin, Wei-Hsin Liao
Summary: This paper proposes a feedforward-feedback hybrid control strategy of sliding mode impulsive control with gravity and friction compensation for lower limb rehabilitation exoskeleton robots (LLRERs), aiming to reduce the adverse effects on gait tracking accuracy caused by gravity and friction, periodic ground shock force, and human-exoskeleton interaction force. Constraints on controller parameters are deduced to achieve high-precision gait tracking with bounded error. The Zeno behavior of impulsive event triggers is excluded through the analysis of three different cases of triggering time sequence. The effectiveness of the proposed hybrid controller is verified through numerical simulation, demonstrating complete gait tracking with bounded error and excellent dynamic performance under constraints.
Article
Neurosciences
Huan Zhao, Junxiao Xie, Yangquan Chen, Junyi Cao, Wei-Hsin Liao, Hongmei Cao
Summary: This study examines the distinctive gait differences of neurodegenerative diseases by extracting various features from vertical ground reaction force and time intervals. Comparative analysis using violin plot and Kruskal-Wallis test reveals the differences and regularities among Parkinson's disease, amyotrophic lateral sclerosis, and Huntington's disease. The classification results show that the refined Lempel-Ziv complexity can significantly enhance the diagnosis accuracy when combined with basic features.
COGNITIVE NEURODYNAMICS
(2023)
Article
Engineering, Manufacturing
Kang Zhang, Xiyao Zhang, Qiang Gao, Meishan Chan, Shilong Zhang, Jifan Li, Wei-Hsin Liao
Summary: In this study, a novel strategy for making ultrahigh energy-dissipation auxetic foam inspired by balloon art was reported. Through finite element analysis, it was found that spherical balloons will turn to reentrant shape when compressed uniaxially in polymer matrix with large Poisson's ratio. By utilizing this knowledge, auxetic silicone foam (ASF) was successfully developed through a well-designed foaming-compression-curing process. ASF exhibits ultrahigh energy dissipation capability of about 2000 kJ/m(3), which is over 80 times higher than conventional auxetic polyurethane foams. It also possesses low water absorption, high chemical and temperature resistance, and thermal responsiveness.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Acoustics
Shitong Fang, Keyu Chen, Bao Zhao, Zhihui Lai, Shengxi Zhou, Wei-Hsin Liao
Summary: Vibration is a sustainable energy source for wireless sensor nodes, but it can have detrimental effects. The simultaneous energy harvesting and vibration isolation at low frequencies is still an open issue. In this study, a novel device with a quasi-zero-stiffness support and multiple nonlinear monostable piezoelectric energy harvesters is proposed. Simulation results show that the proposed device has improved power generation and energy harvesting frequency bandwidth compared to its linear counterpart.
JOURNAL OF SOUND AND VIBRATION
(2023)
Article
Nanoscience & Nanotechnology
Xuewen Gong, Yu-Chun Kuo, Guodong Zhou, Wen-Jong Wu, Wei-Hsin Liao
Summary: In this study, a 1-axis piezoelectric MEMS accelerometer based on aerosol deposition is designed for low-noise applications such as structural health monitoring. The suitability of the design for SHM is confirmed through simulation. The performance measurement shows that the designed accelerometer has good sensitivity and low noise level, making it feasible for real applications.
MICROSYSTEMS & NANOENGINEERING
(2023)
Article
Engineering, Manufacturing
Jingchao Jiang, Xiaoya Zhai, Kang Zhang, Liuchao Jin, Zhichao Shen, Wei-Hsin Liao
Summary: Additive manufacturing has significantly developed, and low-melting point alloys (LMPAs) are becoming more attractive due to their favorable electrical/thermal conductivities and mechanical strengths. However, LMPA additive manufacturing is still in its infancy. This paper presents a novel strategy using extrusion additive manufacturing with two nozzles to fabricate complex and/or multifunctional LMPA components, enabling the use of LMPAs in various applications.
ADDITIVE MANUFACTURING
(2023)
Article
Engineering, Civil
Qiang Gao, Wenbin Li, Yan Shi, Wei-Hsin Liao, Guodong Yin, Junwei Li, Chengyang Wang, Rongxian Qiu
Summary: This paper proposes a rotating auxetic vibration energy harvester (RAVEH) as a new solution for battery-free technology for intelligent tires. The RAVEH adjusts itself at different vehicle speeds through centrifugal force generated by rotational motion. A dynamic model is established and experimentally verified to predict the energy harvesting performances of RAVEH. A comparison with traditional rotating flat energy harvester is conducted and the effects of geometric parameters are discussed. The results show that RAVEH can significantly increase the voltage, power, bandwidth, and power range compared to a flat energy harvester. The designed RAVEH is capable of powering the sensors for intelligent tires and achieving battery-free technology.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
Jingchao Jiang, Xiaoya Zhai, Liuchao Jin, Kang Zhang, Jun Chen, Qitao Lu, Wei-Hsin Liao
Summary: This paper presents a new manufacturing method called reversed additive manufacturing (RAM), discusses the design process and parameter settings of RAM, and demonstrates its feasibility through experiments. The findings of this study have significant implications for improving the design efficiency of RAM.
JOURNAL OF ENGINEERING DESIGN
(2023)
Proceedings Paper
Engineering, Multidisciplinary
Keyu Chen, Wei-Hsin Liao
Summary: In this paper, a new auxetic nonlinear piezoelectric energy harvester is designed and experimentally validated for broad working bandwidth and high power output. It combines a clamped-clamped beam with multiple rotating square unit cells. The structural parameter of the square rotating unit cell is adjusted to obtain desired broad working bandwidth and the number of unit cells is increased to improve power output with minimal influence on the working bandwidth. The proposed energy harvester demonstrates an increase of 14% in working bandwidth and 268% in power output compared to conventional nonlinear energy harvesters under 0.3g base acceleration.
ACTIVE AND PASSIVE SMART STRUCTURES AND INTEGRATED SYSTEMS XVII
(2023)
Proceedings Paper
Engineering, Aerospace
Fei Gao, Gaoyu Liu, Fengyan Liang, Wei-Hsin Liao
Summary: In this paper, an IMU-based locomotion mode identification (LMI) system for ankle-foot prostheses is proposed. The IMU sensor is mounted on the heel to collect dynamic information of the foot during walking. The method accurately predicts/identifies the locomotion mode by estimating the foot trajectory and calculating the inclination grade of the terrain.
SENSORS AND SMART STRUCTURES TECHNOLOGIES FOR CIVIL, MECHANICAL, AND AEROSPACE SYSTEMS 2023
(2023)
Article
Automation & Control Systems
Qiang Gao, Yaping Lu, Yan Shi, Wei-Hsin Liao, Guodong Yin, Junwei Li, Fujun Xiao, Rongxian Qiu
Summary: In this article, a novel piezoelectric energy harvester based on hierarchical auxetic structures is proposed to improve power output. The auxetic structure allows for simultaneous stretching of the piezoelectric element in two directions due to the negative Poisson's ratio, resulting in more energy harvesting. The hierarchical auxetic structure produces a smaller negative Poisson's ratio and deforms more sufficiently, leading to improved energy harvesting efficiency. A numerical model is established and validated with experimental results, and an optimization framework based on machine learning and multiobjective genetic algorithm optimization is developed to further enhance energy harvesting performance. The proposed hierarchical auxetic energy harvester shows great potential for battery-free sensors in various engineering fields.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Mechanical
Guoyuan Xia, Qitao Lu, Mingjing Cai, Xin Li, Daxing Zhang, Congsi Wang, Wei-Hsin Liao
Summary: This paper proposes an adaptive kinetic energy reallocation (AKER) mechanism to stabilize the output power of wearable energy harvesters. The AKER manipulates the kinetic energy transfer to enhance system response, thereby achieving power stability.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
Article
Engineering, Multidisciplinary
Junichi Kouguchi, Hayato Yoshioka
Summary: A new monitoring method for milling process using signal analysis of acceleration sensors is proposed in this research, which can solve the difficulty in estimating cutting forces for small diameter tools.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Weijie Wang, Yanling Tian, Zhao Zhang, Zhilai Lu, Fujun Wang, Dawei Zhang
Summary: This paper proposes a comprehensive model for predicting the cutting depth and contact area in nanoscratching. The model takes into account the geometric shape of the indenter and elastic recovery, reducing prediction errors. The study also analyzes the influence of the indenter geometry on the contact area, with the face angle of the pyramid identified as a key factor.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Qiaolin Li, Yuki Shimizu, Xiaohao Wang, Xinghui Li, Wei Gao
Summary: This paper introduces a stitching linear scan method for roundness and diameter measurement of small cylinders, using a ruby ball stylus as hardware filtering to eliminate the influence of high-frequency data. Experimental results show that the repeatability of the ruby ball stylus is better than the diamond stylus.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Chaturaporn Kerdkaew, Surasak Kaewpho, Sakchai Chomkokard, Theera Yaemglin, Ittipon Cheowanish, Noparit Jinuntuya, Wiwat Wongkokua
Summary: A new calibration standard for a CMOS-based autocollimator using an optical angle generator with a submillimeter strip reflector (OAG-SSR) is proposed. This method provides angular values along the measuring range of the autocollimator without any mechanical movement, enabling a faster calibration process, which is suitable for integration with production lines.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Haohao Tao, Tongjie Li, Feng Chen, Jinwei Fan, Ri Pan
Summary: In this paper, a novel OTA method is proposed that considers the relationship between tolerance of machine tools' key parts and volumetric error. A volumetric error prediction model is established based on the bridge between geometric error and tolerance. Additionally, a Processing Simplicity Index (PSI) is introduced to replace manufacturing cost and a tolerance-PSI model is established. An OTA model is formulated to minimize volumetric error and maximize PSI. The feasibility and effectiveness of the method are validated through simulations and experiments.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Xiumin Zhang, Jianhua Liu, Huanxiong Xia, Xiaohui Ao, Jiechen Zhou, Zhihao Fu
Summary: A comprehensive finite-element model was developed in this paper to study the evolution of surface figure in high-precision bonded mirrors. The cure kinetics and mechanical behaviors of the optical adhesive were experimentally examined and modeled, and the effects of environmental factors on the surface-figure accuracy and stability were further investigated.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Peng Wang, Bin Chen, Jian Li, Jianwei Wang, Yingjie Zhang, Kai Feng
Summary: This paper proposes an aerostatic bearing with damper modules to suppress vibration on the bearing surface. The stiffness and damping characteristics can be adjusted by changing the thickness of the sheets, resulting in effective vibration suppression.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Lei Yang, Xiaoguang Guo, Renke Kang, Xianglong Zhu, Yufan Jia, Hao Wang
Summary: This paper develops an analytical model that takes into account the pad surface morphology to predict the evolution of the workpiece surface shape. The model considers the cross-scale relationship between the formation of lapped surface shape and the scratching process of a single abrasive grain. The simulated and experimental results validate the correctness and validity of the model, providing new ideas for controlling the workpiece surface.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Gabriele Piscopo, Alessandro Salmi, Eleonora Atzeni
Summary: This paper proposes an artifact for the LP-DED process and evaluates its dimensional accuracy and geometrical tolerances. The findings show that the tolerances of the LP-DED process are comparable to sand casting, lower than LB-PBF technologies, but similar to EB-PBF technologies.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Liang Xue, Ningsong Qu
Summary: This study focuses on the key issues of improving material removal rate and surface quality in macro-electrolyte jet machining. By introducing a novel tool with the rear-end tilted, the current density of the workpiece surface can be increased, leading to improved machining performance. Experimental results show that the tool with a rear-end tilt angle of 15 degrees significantly enhances the material removal rate and reduces surface roughness compared to the standard tool.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Ping Yang, Kaixin Luo, Runxi Wu
Summary: This article proposes a new calibration device to measure the spatial errors of a six-axis serial robot. The device compensates for errors by modifying angles and identifying stiffness parameters, and experiments verify its effectiveness.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Shilei Wu, Mingxiang Ling, Yingbin Wang, Tao Huang
Summary: This paper studies the electromechanical behavior of elliptical APAs by analyzing the multi-domain dynamics of piezoelectric stacks and compliant mechanisms using a novel electro-mechanical transfer matrix method. An analytical electro-elasto transfer matrix of piezoelectric stacks operating at the d33 mode is derived in the form of Taylor's series. The dynamic response spectrum of displacement and impedance for elliptical APAs is accurately captured by this electro-mechanical model, and different topologies of elliptical APAs are compared to suggest the optimal configuration.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Lei Meng, Yusheng Liu, Ying Yan, Dongming Guo, Ping Zhou
Summary: This study explores electrochemically induced chemical etching (ECICE) as a method to achieve nanogram-level, low-cost, stress-free, and stable material removal of fused quartz. The key factors affecting removal minimum and stability are revealed through modeling analysis and testing. A proposed method achieves precision stable removal with satisfactory results at the nanogram level.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Hong Yao, Hai Bi, Junjie Wei, Shuo Zhan, Fangxin Chen, IEEE
Summary: This paper presents a dual-loop control syringe-based picoliter-scale injection system for high-precision microinjection. The system utilizes an inner pneumatic servo loop and an outer position servo loop to achieve precise control. The experimental results demonstrate that the system can regulate the smallest droplet size to within 0.25 pL.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Jinchun Yuan, Jiasheng Li, Ye Ding
Summary: In this paper, a simple and effective internal model control (IMC) system is proposed to attenuate thrust ripples in ultraprecision air-bearing linear feed systems, based on a modified modeling and identification method of permanent magnet linear synchronous motors (PMLSMs). The performance of the proposed method in overcoming nonlinearity and achieving smooth velocities in steady states is demonstrated through analysis and experiments.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
