Topic Editors

Mechanical and Electrical Engineering College, Hainan University, Haikou 570228, China
Department of Physics, School of Science and Technology, University of Evora, 7000-671 Evora, Portugal

Micro-Mechatronic Engineering

Abstract submission deadline
closed (31 August 2024)
Manuscript submission deadline
31 October 2024
Viewed by
15213

Topic Information

Dear Colleagues,

The 25th International Conference of Fluid Power and Mechatronic Control Engineering (ICFPMCE, https://2024.icfpmce.cn/) will be held on 17-20 July 2024, in China, and will provide a multidisciplinary forum in the fields of hydraulics, mechanics and electrical engineering, ranging from the latest fundamental research to industrial applications. This Topic is expected to include high-quality papers presented at ICFPMCE 2024 regarding micro-mechatronic engineering. Papers that have not been presented at ICFPMCE are also welcome. We invite you to share your novel ideas and achievements by contributing original research articles or comprehensive review papers to this Topic.

Dr. Teng Zhou
Dr. Antonio F. Miguel
Topic Editors

Keywords

  • micro/nano-fluidics
  • additive manufacturing technology
  • fluid power research
  • artificial intelligence
  • hydraulics
  • aerodynamics
  • fluid–solid coupling
  • mechatronics
  • thermal/fluid mechanics
  • intelligent manufacturing and control
  • robots and their application
  • intelligent hydraulic components
  • energy saving and environmental protection
  • noise and vibration control
  • transmission and control

Participating Journals

Journal Name Impact Factor CiteScore Launched Year First Decision (median) APC
Applied Sciences
applsci
2.5 5.3 2011 17.8 Days CHF 2400 Submit
Electronics
electronics
2.6 5.3 2012 16.8 Days CHF 2400 Submit
Fluids
fluids
1.8 3.4 2016 22.1 Days CHF 1800 Submit
Micromachines
micromachines
3.0 5.2 2010 17.7 Days CHF 2600 Submit
Processes
processes
2.8 5.1 2013 14.4 Days CHF 2400 Submit
Inventions
inventions
2.1 4.8 2016 21.2 Days CHF 1800 Submit
Machines
machines
2.1 3.0 2013 15.6 Days CHF 2400 Submit

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Published Papers (9 papers)

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17 pages, 6915 KiB  
Article
Simulation and Experimental Study on Stress Relaxation Response of Polycrystalline γ-TiAl Alloy under Nanoindentation Based on Molecular Dynamics
by Junye Li, Chunyu Wang, Jianhe Liu, Xiwei Dong, Jinghe Zhao and Ying Chen
Micromachines 2024, 15(8), 1020; https://doi.org/10.3390/mi15081020 - 9 Aug 2024
Viewed by 644
Abstract
This study employed nano-indentation technology, molecular dynamics simulation, and experimental investigation to examine the stress relaxation behaviour of a polycrystalline γ-TiAl alloy. The simulation enabled the generation of a load-time curve, the visualisation of internal defect evolution, and the mapping of stress distribution [...] Read more.
This study employed nano-indentation technology, molecular dynamics simulation, and experimental investigation to examine the stress relaxation behaviour of a polycrystalline γ-TiAl alloy. The simulation enabled the generation of a load-time curve, the visualisation of internal defect evolution, and the mapping of stress distribution across each grain during the stress relaxation stage. The findings indicate that the load remains stable following an initial decline, thereby elucidating the underlying mechanism of load change during stress relaxation. Furthermore, a nano-indentation test was conducted on the alloy, providing insight into the load variation and stress relaxation behaviour under different loading conditions. By comparing the simulation and experimental results, this study aims to guide the theoretical research and practical application of γ-TiAl alloys. Full article
(This article belongs to the Topic Micro-Mechatronic Engineering)
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22 pages, 30187 KiB  
Article
Development of Multi-Motor Servo Control System Based on Heterogeneous Embedded Platforms
by Mingrui Gou, Bangji Wang and Xilin Zhang
Electronics 2024, 13(15), 2957; https://doi.org/10.3390/electronics13152957 - 26 Jul 2024
Viewed by 617
Abstract
Multi-motor servo systems are widely used in industrial control. However, the single-core microprocessor architecture based on the microcontroller unit (MCU) and digital signal processor (DSP) is not well suited for high-performance multi-motor servo systems due to the inherent limitations in computing performance and [...] Read more.
Multi-motor servo systems are widely used in industrial control. However, the single-core microprocessor architecture based on the microcontroller unit (MCU) and digital signal processor (DSP) is not well suited for high-performance multi-motor servo systems due to the inherent limitations in computing performance and serial execution of code. The bus-based distributed architecture formed by interconnecting multiple unit controllers increases system communication complexity, reduces system integration, and incurs additional hardware and software costs. Field programmable gate array (FPGA) possesses the characteristics of high real-time performance, parallel processing, and modularity. A single FPGA can integrate multiple motor servo controllers. This research uses MCU + FPGA as the core to realize high-precision multi-axis real-time control, combining the powerful performance of the MCU processor and the high-speed parallelism of FPGA. The MCU serves as the central processor and facilitates data interaction with the host computer through the controller area network (CAN). After data parsing and efficient computation, MCU communicates with the FPGA through flexible static memory controller (FSMC). A motor servo controller intellectual property (IP) core is designed and packaged for easy reuse within the FPGA. A 38-axis micro direct current (DC) motor control system is constructed to test the performance of the IP core and the heterogeneous embedded platforms. The experimental results show that the designed IP core exhibits robust functionality and scalability. The system exhibits high real-time performance and reliability. Full article
(This article belongs to the Topic Micro-Mechatronic Engineering)
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13 pages, 6763 KiB  
Article
Evaluation of an Active Disturbance Rejection Controller for Ophthalmic Robots with Piezo-Driven Injector
by Qiannan Tao, Jianjun Liu, Yu Zheng, Yang Yang, Chuang Lin and Chenhan Guang
Micromachines 2024, 15(7), 833; https://doi.org/10.3390/mi15070833 - 27 Jun 2024
Viewed by 1231
Abstract
Retinal vein cannulation involves puncturing an occluded vessel on the micron scale. Even single millinewton force can cause permanent damage. An ophthalmic robot with a piezo-driven injector is precise enough to perform this delicate procedure, but the uncertain viscoelastic characteristics of the vessel [...] Read more.
Retinal vein cannulation involves puncturing an occluded vessel on the micron scale. Even single millinewton force can cause permanent damage. An ophthalmic robot with a piezo-driven injector is precise enough to perform this delicate procedure, but the uncertain viscoelastic characteristics of the vessel make it difficult to achieve the desired contact force without harming the retina. The paper utilizes a viscoelastic contact model to explain the mechanical characteristics of retinal blood vessels to address this issue. The uncertainty in the viscoelastic properties is considered an internal disturbance of the contact model, and an active disturbance rejection controller is then proposed to precisely control the contact force. The experimental results show that this method can precisely adjust the contact force at the millinewton level even when the viscoelastic parameters vary significantly (up to 403.8%). The root mean square (RMS) and maximum value of steady-state error are 0.32 mN and 0.41 mN. The response time is below 2.51 s with no obvious overshoot. Full article
(This article belongs to the Topic Micro-Mechatronic Engineering)
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16 pages, 6490 KiB  
Article
Effects of the Wall Temperature on Rarefied Gas Flows and Heat Transfer in a Micro-Nozzle
by Shurui Zhang, Yong Li, Xudong Wang, Songcai Lu, Yusong Yu and Jun Yang
Micromachines 2024, 15(1), 22; https://doi.org/10.3390/mi15010022 - 22 Dec 2023
Viewed by 1100
Abstract
When the satellite is in orbit, the thruster will experience drastic temperature changes (100–1000 K) under solar radiation, which will affect the rarefied gas flow state in the micro-nozzle structure of the cold gas micro-thruster. In this study, the effect of different wall [...] Read more.
When the satellite is in orbit, the thruster will experience drastic temperature changes (100–1000 K) under solar radiation, which will affect the rarefied gas flow state in the micro-nozzle structure of the cold gas micro-thruster. In this study, the effect of different wall temperatures on the rarefied flow and heat transfer in the micro-nozzle is investigated based on the DSMC method. The micro-nozzle structure in this paper has a micro-channel with a large length-to-diameter ratio of 10 and a micro-scale needle valve displacement (maximum needle valve displacement up to 4 μm). This leads to more pronounced multiscale flow characteristics in the micro-nozzle, which is more influenced by the change in wall temperature. At wall temperatures ranging from 100 K to 1000 K, the spatial distribution of local Kn distribution, slip velocity distribution, temperature, and wall heat flux distribution in the micro-nozzle were calculated. The slip flow region is located in the flow channel and transforms into transition flow as the slip velocity reaches approximately 50 m/s. The spatial distribution of the flow pattern is dominated by the wall temperature at small needle valve opening ratios. The higher the wall temperature, the smaller the temperature drop ratio in the low-temperature region inside the micro-nozzle. The results of the study provide a reference for the design of temperature control of micro-nozzles in cold gas micro-thrusters. Full article
(This article belongs to the Topic Micro-Mechatronic Engineering)
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16 pages, 14896 KiB  
Article
An Inspection Technique Using Fit Clearance Based on Microscopic Vision in Precision Assembly
by Yawei Li, Yi Luo and Xiaodong Wang
Micromachines 2023, 14(10), 1852; https://doi.org/10.3390/mi14101852 - 27 Sep 2023
Viewed by 1117
Abstract
Inspection is a crucial process to ensure product quality. In the precision assembly of an optic-mechanical device, a part with micro multi-section arcs needs to be inspected and assembled into another part. Actually, because of machining errors, including dimensional and geometric shapes, can [...] Read more.
Inspection is a crucial process to ensure product quality. In the precision assembly of an optic-mechanical device, a part with micro multi-section arcs needs to be inspected and assembled into another part. Actually, because of machining errors, including dimensional and geometric shapes, can lead to complex deformation modes for parts with micro multi-section arcs, posing challenges to their inspection. Furthermore, inconsistencies in feature images in microscopic vision may complicate the extraction of the Region of Interest (ROI). To address these issues, this paper proposes an ROI extraction method based on the CAD model for rough positioning of feature points and connected region detection for refinement. Subsequently, based on feature points, the CAD model is used again to obtain the ROI. For inspection purposes, this paper proposes a method suitable for micro multi-section arcs based on assembly fit requirements. Experimental testing was performed on parts with eight-section arcs and mirrors to verify the effectiveness of the proposed method. This method provides a suitable solution for the inspection of micro multi-section arcs in precision assembly with the potential to improve the accuracy of the inspection results. Full article
(This article belongs to the Topic Micro-Mechatronic Engineering)
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13 pages, 3419 KiB  
Article
Design and Processing of Gas Turbine Blades Based on Additive Manufacturing Technology
by Xuan Liu, Xingguo Han, Guofu Yin, Xiaohui Song and Lixiu Cui
Micromachines 2023, 14(9), 1675; https://doi.org/10.3390/mi14091675 - 27 Aug 2023
Cited by 2 | Viewed by 2776
Abstract
Aiming at the problems of the complex shape, difficult three-dimensional (3D) digital modeling and high manufacturing quality requirements of gas turbine blades (GTB), a method of fitting the blade profile line based on a cubic uniform B-spline interpolation function was proposed. Firstly, surface [...] Read more.
Aiming at the problems of the complex shape, difficult three-dimensional (3D) digital modeling and high manufacturing quality requirements of gas turbine blades (GTB), a method of fitting the blade profile line based on a cubic uniform B-spline interpolation function was proposed. Firstly, surface modeling technology was used to complete the fitting of the blade profile of the GTB, and the 3D model of the GTB was synthesized. Secondly, the processing parameters of the additive manufacturing were set, and the GTB model was printed by fused deposition technology. Then, the rapid investment casting was completed with the printed model as a wax model to obtain the GTB casting. Finally, the blade casting was post-processed and measured, and it was found to meet the requirements of machining accuracy and surface quality. Full article
(This article belongs to the Topic Micro-Mechatronic Engineering)
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17 pages, 5536 KiB  
Article
Variable-Structure Proportional–Integral–Derivative Laser Solder Joint Temperature Intelligent Control Method with Adjustable Power Upper Limit
by Mingchao Li, Pengbin Cao, Cong Zhang, Kuan Yan and Yuquan Zhang
Micromachines 2023, 14(8), 1618; https://doi.org/10.3390/mi14081618 - 17 Aug 2023
Cited by 2 | Viewed by 1508
Abstract
Laser soldering is a crucial soldering technique in the realm of electronic assembly. The temperature of the solder joint is intimately connected with the quality of the solder. This paper introduces an adjustable power upper limit variable-structure Proportional–Integral–Derivative (PID) intelligent control method for [...] Read more.
Laser soldering is a crucial soldering technique in the realm of electronic assembly. The temperature of the solder joint is intimately connected with the quality of the solder. This paper introduces an adjustable power upper limit variable-structure Proportional–Integral–Derivative (PID) intelligent control method for regulating the temperature of the solder joint during laser soldering. Distinct laser power limits are employed for workpieces with varying heat capacities. The solder joint temperature is monitored through an infrared thermometer, which enables closed-loop temperature control via a variable-structure PID algorithm. Residual neural network (ResNet) models are utilized to predict key soldering process parameters. This method has been executed and validated on a practical testing platform. Compared to other laser soldering control techniques, the proposed method demonstrates a low overshoot, rapid dynamic response, and swift adjustment capabilities, effectively enhancing the soldering quality and production efficiency. Full article
(This article belongs to the Topic Micro-Mechatronic Engineering)
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16 pages, 1679 KiB  
Review
Review of the Flight Control Method of a Bird-like Flapping-Wing Air Vehicle
by Xiaoqing Fang, Yian Wen, Zhida Gao, Kai Gao, Qi Luo, Hui Peng and Ronghua Du
Micromachines 2023, 14(8), 1547; https://doi.org/10.3390/mi14081547 - 31 Jul 2023
Cited by 2 | Viewed by 2837
Abstract
The Bird-like Flapping-wing Air Vehicle (BFAV) is a robotic innovation that emulates the flight patterns of birds. In comparison to fixed-wing and rotary-wing air vehicles, the BFAV offers superior attributes such as stealth, enhanced maneuverability, strong adaptability, and low noise, which render the [...] Read more.
The Bird-like Flapping-wing Air Vehicle (BFAV) is a robotic innovation that emulates the flight patterns of birds. In comparison to fixed-wing and rotary-wing air vehicles, the BFAV offers superior attributes such as stealth, enhanced maneuverability, strong adaptability, and low noise, which render the BFAV a promising prospect for numerous applications. Consequently, it represents a crucial direction of research in the field of air vehicles for the foreseeable future. However, the flapping-wing vehicle is a nonlinear and unsteady system, posing significant challenges for BFAV to achieve autonomous flying since it is difficult to analyze and characterize using traditional methods and aerodynamics. Hence, flight control as a major key for flapping-wing air vehicles to achieve autonomous flight garners considerable attention from scholars. This paper presents an exposition of the flight principles of BFAV, followed by a comprehensive analysis of various significant factors that impact bird flight. Subsequently, a review of the existing literature on flight control in BFAV is conducted, and the flight control of BFAV is categorized into three distinct components: position control, trajectory tracking control, and formation control. Additionally, the latest advancements in control algorithms for each component are deliberated and analyzed. Ultimately, a projection on forthcoming directions of research is presented. Full article
(This article belongs to the Topic Micro-Mechatronic Engineering)
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14 pages, 6065 KiB  
Article
Rapid Calibration of Nanoliter per Second Flow Rate by Image Processing Technology
by Jiawei Luo, Cheng Yang and Yan Shen
Micromachines 2023, 14(6), 1189; https://doi.org/10.3390/mi14061189 - 2 Jun 2023
Cited by 1 | Viewed by 1370
Abstract
The need for high-precision microflow control is increasingly evident across various fields. For instance, microsatellites employed in gravitational wave detection require flow supply systems with a high accuracy of up to 0.1 nL/s to achieve on-orbit attitude control and orbit control. However, conventional [...] Read more.
The need for high-precision microflow control is increasingly evident across various fields. For instance, microsatellites employed in gravitational wave detection require flow supply systems with a high accuracy of up to 0.1 nL/s to achieve on-orbit attitude control and orbit control. However, conventional flow sensors are unable to provide the necessary precision in the nanoliter per second range, and thus, alternative methods are required. In this study, we propose the use of image processing technology for rapid microflow calibration. Our method involves capturing images of the droplets at the outlet of the flow supply system to rapidly obtain the flow rate, and we used the gravimetric method to verify the accuracy of our approach. We conducted several microflow calibration experiments within the 1.5 nL/s range and demonstrated that image processing technology can achieve the desired accuracy of 0.1 nL/s while saving more than two-thirds of the time required to obtain the flow rate within an acceptable margin of error compared to the gravimetric method. Our study presents an efficient and innovative approach to addressing the challenges of measuring microflows with high precision, particularly in the nanoliter per second range, and has the potential for widespread applications in various fields. Full article
(This article belongs to the Topic Micro-Mechatronic Engineering)
(This article belongs to the Section E:Engineering and Technology)
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