International Journal of Precision Engineering and Manufacturing
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A Gain-Adaptive Intelligent Nonlinear Control for an Electrohydraulic Rotary Actuator
International Journal of Precision Engineering and Manufacturing - Tập 19 - Trang 665-673 - 2018
This paper introduces an effective approach for trajectory-tracking control of an electrohydraulic rotary actuator (EHRA). The key feature of this control approach is to utilize a gain-adaptive fuzzy sliding mode control technique to realize the control objective wherein the mathematical model of the system dynamics does not need to be known exactly. Firstly, a state space form of the system model......
Laser and arc manufacturing processes: A review
International Journal of Precision Engineering and Manufacturing - Tập 17 - Trang 973-985 - 2016
Manufacturing can be defined as the transformation of raw materials into desired products by various processes, such as machining, welding and coating. Today, laser and arc heat sources are largely used as the means for processing raw materials. The laser is one of the most widely used non-contact thermal energy sources in various processes, and the development of laser processes and devices for e......
Thermo-Mechanical Coupling Modeling of Active Phased Array Antennas
International Journal of Precision Engineering and Manufacturing - - 2019
Development of a flexible direct photosynthetic/metabolic biofuel cell for mobile use
International Journal of Precision Engineering and Manufacturing - Tập 10 Số 1 - Trang 75-78 - 2009
We have developed a direct photosynthetic/metabolic biofuel cell (DPBFC) without a mediator, based on the extraction of electrons directly from bacteria using a polyaniline electrode. Since previous developments of this nature are rigid, they are not suitable for use on curved or soft surfaces. Our DPBFC has a flexible structure due to its flexible components: a membrane electrode assembly made of......
Comparison of gait and cognitive function among the elderly with Alzheimer’s Disease, Mild Cognitive Impairment and Healthy
International Journal of Precision Engineering and Manufacturing - Tập 12 - Trang 169-173 - 2011
The purpose of this study was to compare gait pattern and cognitive function among elderly patients with Alzheimer’s Disease (AD), elderly people with Mild Cognitive Impairment (MCI), and Healthy Controls (HC). Twenty three elderly patients participated: 10 AD (77.2±6.84 yrs), 7 MC I(72.9±6.28 yrs), and 6 HC (71.6±5.78 yrs). Gait and Cognitive function were collected using an accelerometer attache......
Development of the end-effector measurement system for a 6-axis welding robot
International Journal of Precision Engineering and Manufacturing - Tập 11 - Trang 519-526 - 2010
We develop a new measurement system which can measure position and orientation of the end-effector of a six-axis welding robot. The developed measurement system consists of five digital probes. The measurement values from the digital probes are transformed into position and orientation of the end-effector with consideration of measurement system kinematics. Calibration procedure is applied to the ......
Analysis of the Partial Axial Load of a Very Thin-Walled Spur-Gear (Flexspline) of a Harmonic Drive
International Journal of Precision Engineering and Manufacturing - Tập 21 Số 7 - Trang 1333-1345 - 2020
Harmonic drives are the core components to enable movement in industrial robots. Unfortunately, the deformation of flexspline causes obvious partial axial load on gear engagement. This synthetic error leads to a series of additional problems, such as the deterioration of transmission quality, and the reduction of both precision and fatigue life. This study focuses on a harmonic drive with a double......
Iterative Generation Method of Arc Length Parameterized Curve Tool Path for Surface Machining from Short-Line Tool Path
International Journal of Precision Engineering and Manufacturing - Tập 24 - Trang 1821-1833 - 2023
To improve the application of the parametric curve tool path in surface machining, a method for generating arc-length parameterized toolpaths based on short-line toolpaths is proposed. The method first uses commercial CAM software to plan the short-line tool path. Then, the machining tool path with smooth continuous features is extracted. The smooth and continuous features are determined according......
A study on the laser preheating effect of inconel 718 specimen with rotated angle with respect to 2-axis
International Journal of Precision Engineering and Manufacturing - Tập 15 - Trang 189-192 - 2014
Lately, LAM(Laser Assisted Machining) is a newly developed method for processing of difficult-to-cut material. LAM is a processing method which softens the difficult-to-cut material by laser preheating. The purpose of this research is to study the laser preheating effect of Inconel 718 specimen with rotated angle with respect to 2-axis in LAM. A specimen with rotated angle with respect to 1-axis i......
FEM analysis for laser bending process of DP980 steel sheet
International Journal of Precision Engineering and Manufacturing - Tập 16 - Trang 315-321 - 2015
Laser bending of metal sheet is a complex process that is achieved by introducing thermal stress into a metal sheet through irradiation using a defocused laser beam. In a single scanning process, it is important to know the effects of the engineering parameters on the final bending angle, such as the laser power, laser beam diameter, and scanning speed. Furthermore, it is important to investigate ......
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