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Article
Engineering, Mechanical
Fangxin Chen et al.
Summary: This article presents a piezo-actuated microgripper characterized by large amplification ratio and compact structure size. The microgripper is actuated by a piezo-stack actuator that is integrated with a two-stage displacement amplifier to achieve large travel range. A new design methodology flexure hinge individualized design (FHID) was proposed to realize large amplification ratio. The developed microgripper was modeled and evaluated through kinematics, finite element analysis, and experimental studies.
JOURNAL OF MECHANICAL DESIGN
(2022)
Article
Engineering, Mechanical
Zekui Lyu et al.
Summary: This paper presents the design, modeling, optimization, simulation, and experimental study of a new asymmetric flexible microgripper driven by a piezoelectric actuator. The gripper design is guided by a new guideline and features a consistent working mode and non-dense mode of resonance. The gripper mechanism consists of a three-stage flexure amplification mechanism which achieves friction-free and clearance-free displacement amplification. The performance of the flexure hinge is optimized and the kinematic, static, and dynamic models of the gripper are derived. Simulations and experiments verify the working stroke, clamping force, and resonant frequency of the designed gripper.
MECHANISM AND MACHINE THEORY
(2022)
Article
Engineering, Multidisciplinary
Zheng Gong et al.
Summary: This paper introduces a Lorentz force fast tool servo system with advanced PID control and sliding mode control algorithms. The effectiveness of the system is verified through Simulink simulation models. The results show that this method has reliable performance and high efficiency in precision machining.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2022)
Article
Engineering, Mechanical
Mingxiang Ling et al.
Summary: This paper reports a new type of fast amplified piezoelectric actuator (APA) with enhanced resonance frequency based on a hybrid compliant amplifying mechanism. By synthesizing lever-type and semi bridge-type compliant mechanisms, a two-stage displacement flexure amplifier is proposed, achieving a good tradeoff between displacement amplification ratio and dynamic bandwidth. Experimental evaluation shows that this APA has high resonance frequency, displacement amplification ratio, and response speed, with a compact size. Additionally, a comprehensive two-port dynamic stiffness model is developed to predict the static and dynamic behaviors of the compliant amplifier.
Article
Engineering, Mechanical
Zheng Gong et al.
Summary: This paper presents a novel long-stroke fast tool servo system with counterbalance and its application to the diamond machining of microstructured surfaces. The system achieves high accuracy and improved surface quality through a hybrid control algorithm and symmetric counterbalance arrangement.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Engineering, Multidisciplinary
Kuo-Ming Chang et al.
Summary: Non-axisymmetric aspheric machining is becoming increasingly important in the photoelectric industry. This study uses a piezoelectric device to perform the machining process and explores various control methods, including PID, sliding mode control, non-singular terminal sliding mode control, and adaptive NTSMC. The simulation and experimental results show that the NTSMC and adaptive NTSMC have excellent control performance in achieving non-axisymmetric aspheric machining. The implementation of these controllers demonstrates their effectiveness on a workpiece of oxygen-free copper.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2022)
Article
Engineering, Manufacturing
Zheng Gong et al.
Summary: In this paper, advanced PID control algorithm and hybrid control algorithm are compared and tested on a Lorentz force FTS. The hybrid control demonstrates better robustness and form accuracy compared to the advanced PID control.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Engineering, Mechanical
Fangxin Chen et al.
Summary: This paper presents the design, modelling, analysis, and test of a piezo-actuated dual-drive linear motion system capable of achieving millimeter stroke and nanometer resolution. Through optimization of structural parameters and the use of stiffness distribution method, a large amplification ratio and efficient system design are achieved. The proposed system shows remarkable superiority in performance compared to other similar works, making it highly valuable for practical applications.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Engineering, Multidisciplinary
Hongcheng Li et al.
Summary: This paper proposes a novel 3-DOF piezo-actuated FTS mechanism with high natural frequency and decoupling property, and verifies its performance through finite element analysis and multiple tests.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2021)
Article
Chemistry, Analytical
Chia-Nan Wang et al.
Summary: The study designed compliant mechanism flexure hinges using grey relational analysis, with experiment results confirming high consistency with predictions. Design dimensions significantly affected equivalent stress and displacement, with an obtained displacement amplification ratio of 65.36 times compared to the initial design.
Article
Chemistry, Analytical
Zelong Li et al.
Summary: An advanced FTS system was designed with a high natural frequency flexure hinge servo turret and a composite control algorithm to address hysteresis and phase delay issues. Experimental results demonstrated that the tracking error of the designed FTS system was less than 10% across the full frequency range (0-1000 Hz).
Article
Engineering, Industrial
Zhen Tong et al.
CIRP ANNALS-MANUFACTURING TECHNOLOGY
(2020)
Article
Engineering, Manufacturing
Peng Huang et al.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2020)
Article
Engineering, Multidisciplinary
Ye Tao et al.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2020)
Article
Engineering, Industrial
Zhiwei Zhu et al.
CIRP ANNALS-MANUFACTURING TECHNOLOGY
(2019)
Article
Automation & Control Systems
Fujun Wang et al.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2019)
Article
Computer Science, Artificial Intelligence
Chun-Fei Hsu et al.
APPLIED SOFT COMPUTING
(2016)
Article
Automation & Control Systems
Fujing Tian et al.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2016)
Article
Engineering, Manufacturing
Dan Wu et al.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2007)
