A5076920555- Advanced Surface Polishing Techniques
- Advanced machining processes and optimization
- Advanced Machining and Optimization Techniques
- Cellular and Composite Structures
- Piezoelectric Actuators and Control
- Laser Material Processing Techniques
- Advanced Measurement and Metrology Techniques
- Advanced MEMS and NEMS Technologies
- Force Microscopy Techniques and Applications
- Iterative Learning Control Systems
- Advanced Materials and Mechanics
- Tunneling and Rock Mechanics
- Biomimetic flight and propulsion mechanisms
- Nonlinear Optical Materials Studies
- Structural Analysis and Optimization
- Automotive and Human Injury Biomechanics
- Fluid Dynamics and Turbulent Flows
- Robotic Mechanisms and Dynamics
- Ocular and Laser Science Research
- Tribology and Lubrication Engineering
- Elasticity and Material Modeling
- Acoustic Wave Phenomena Research
- Metamaterials and Metasurfaces Applications
- Diamond and Carbon-based Materials Research
- Laser and Thermal Forming Techniques
Jilin University
2016-2025
Jilin Medical University
2012-2025
People's Hospital of Bishan District
2024
Chongqing Medical University
2024
Xinqiao Hospital
2023
Central South University
2020
Instituto de Gastroenterologia de Goiânia
2018
China Academy of Engineering Physics
2018
University of Shanghai for Science and Technology
2015-2017
University of Science and Technology Beijing
2016
A piezoelectric actuator based on parasitic motion principle is proposed and tested. The explored to simultaneously realize coarse (long stroke) fine (high accuracy) motions using dual-servo control method. working of the discussed, finite-element method adopted. dynamic model LuGre friction simulated <sc xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">matlab</small> /Simulink. prototype manufactured investigate performance. Experimental results...
A piezoelectric-driven actuator based on the lateral motion principle is proposed in this paper, it can achieve large-stroke linear with high resolution. One parallelogram-type flexure hinge mechanism and one piezoelectric stack are used to generate motion. The mechanical structure working discussed. prototype was fabricated a series of experiments were carried out investigate its performance. results indicate that maximum moving speed about 14.25 mm s−1, output force 3.43 N, minimum...
Piezo-driven precision positioning platforms with large stroke are greatly demanded in both scientific research and industrial applications. Although various principles have been proposed to design piezo-driven platforms, the problem of backward motion commonly exists, hindering their To suppress motion, this paper, an idea by generating a forward frictional force balance reversed was proposed. Correspondingly, specific arc-shape flexure hinge designed generate via its elastic recovery....
To achieve high single-step efficiency (SSE), a novel bionic stick-slip piezoelectric actuator inspired by kangaroo's leg mechanics is proposed in this article. The design incorporates an elastic drive mechanism that mimics the tendon and foot function, effectively storing releasing potential energy. By employing single stack, enhances stepping displacement both stick slip phases. forward during phase enhanced coupling amplification principle, while sudden increase characteristics are...
In this paper, a novel pseudo-random diamond turning (PRDT) method is proposed for the fabrication of freeform optics with scattering homogenization by means actively eliminating inherent periodicity residual tool marks. The strategy accurately determining spiral toolpath vibration modulation deliberately explained. Spatial geometric calculation employed to determine in consideration cutting geometries, and an iteration algorithm further introduced enhance computation efficiency. Moreover,...
A piezo-driven linear actuator based on the improved stick–slip principle is developed in this article. With help of two piezo-stacks and flexure hinges, preload force can be changed, so designed realize relatively large ranges output force. The mainly consists mover, stator, piezo-stacks, an adjusting stage base. working theoretical analysis are described. prototype was fabricated a series experiments were carried out to investigate work characteristics it. Experimental results indicate...
The new energetic material 2,6-diamino-3,5-dinitropyrazine-1-oxide (C4H4N6O5, LLM-105) maintains its structural stability under high pressure below 30 GPa at room temperature or in the range from 513 to 5 K with ambient based on cryogenic X-ray diffraction patterns. One phase transition occurs about and is confirmed by pressure-dependent Raman infrared spectra. structure of LLM-105 crystal shows anisotropic compressibility order βb > βa βc thermal expansion αb αc ≈ αa. A Debye 1225 obtained...
The cutting forces will generally suffer massive complex factors, such as material deformation, tool eccentricity and system vibration, which inevitably induce many great difficulties in accurately modeling the force predictions that are very significant to investigate processes. Therefore, genetic algorithm optimized back-propagation particle swarm optimization neural networks be adopted effectively construct prediction models. In these two models, main milling parameters defined into their...
<title>Abstract</title> During magnetorheological microjet polishing (MMJP) of hard and brittle surface materials such as glass, non-uniform material removal often occurs. To address this issue, paper proposes a collaborative control framework integrating dynamic path planning dwell time optimization. First, an 8-direction priority search combined with the A* algorithm is employed to generate full-coverage toolpaths, while dynamically adjusting node attributes (coordinates, status, targets)...
Robot-assisted minimally invasive surgery (RMIS) is promising for improving surgical accuracy and dexterity. As the end effector of robotic arm, remote centre motion mechanism one requisite terms guaranteeing patient safety. The existing mechanisms are complex large in volume, as well high assembly requirement unsatisfactory precise. This paper aimed to present a new solving these problems. A based on RMIS requirements proposed holding laparoscope generating laparoscope. kinematics then...