SENSOR PVDF DENGAN POLARISASI PERMUKAAN SEBAGAI PENDETEKSI GAYA POTONG PADA MESIN GURDI

PVDF sensor is a sensor that is often used to measure force, strain, vibration and heat. In this study, PVDF sensors with surface polarization are used to detect cutting forces on the machine. The PVDF sensor that has been polarized on the surface is placed in the chuck part of the engine. Measuring instrumen for testing and calibrating PVDF sensors is oscilloscope with increased loading and reduced axial and tangential directions. After the calibration process, the PVDF sensor was used to measure cutting force on drilling machine, and then the results were compared with the PCB piezotronics force sensor. The PVDF sensor output signal is measured and studied for its voltage using an oscilloscope, where the output signal is compared to the weight given to the PVDF sensor. From the results of these tests indicate that the maximum deviation in axial loading is 0.32V while the tangential loading is 0.31VKeywords. PVDF sensor, Surface polarization, Drilling machine, Cutting force

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Development of a Wearable Mouth Guard Device for Monitoring Teeth Clenching during Exercise

Sensors ◽

10.3390/s21041503 ◽

2021 ◽

Vol 21 (4) ◽

pp. 1503

Author(s):

Rio Kinjo ◽

Takahiro Wada ◽

Hiroshi Churei ◽

Takehiro Ohmi ◽

Kairi Hayashi ◽

...

Keyword(s):

Force Sensor ◽

Tolerance Test ◽

Sensor Output ◽

Sports Performance ◽

Teeth Grinding ◽

Exercise Tolerance Test ◽

Sensor Position ◽

Video Motion Analysis ◽

Teeth Clenching ◽

The Relationship

Teeth clenching during exercise is important for sports performance and health. Recently, several mouth guard (MG)-type wearable devices for exercise were studied because they do not disrupt the exercise. In this study, we developed a wearable MG device with force sensors on both sides of the maxillary first molars to monitor teeth clenching. The force sensor output increased linearly up to 70 N. In four simple occlusion tests, the trends exhibited by the outputs of the MG sensor were consistent with those of an electromyogram (EMG), and the MG device featured sufficient temporal resolution to measure the timing of teeth clenching. When the jaw moved, the MG sensor outputs depended on the sensor position. The MG sensor output from the teeth-grinding test agreed with the video-motion analysis results. It was comparatively difficult to use the EMG because it contained a significant noise level. Finally, the usefulness of the MG sensor was confirmed through an exercise tolerance test. This study indicated that the developed wearable MG device is useful for monitoring clenching timing and duration, and the degree of clenching during exercise, which can contribute to explaining the relationship between teeth clenching and sports performance.

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Cutting force sensor based on digital image correlation for segmented chip formation analysis

Journal of Materials Processing Technology ◽

10.1016/j.jmatprotec.2016.07.016 ◽

2016 ◽

Vol 238 ◽

pp. 466-473 ◽

Cited By ~ 11

Author(s):

Thomas Baizeau ◽

Sébastien Campocasso ◽

Frédéric Rossi ◽

Gérard Poulachon ◽

François Hild

Keyword(s):

Digital Image Correlation ◽

Cutting Force ◽

Digital Image ◽

Chip Formation ◽

Force Sensor ◽

Image Correlation ◽

Segmented Chip

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Development of a Robotic End-Effector for Apple Tree Pruning

Transactions of the ASABE ◽

10.13031/trans.13729 ◽

2020 ◽

Vol 63 (4) ◽

pp. 847-856 ◽

Cited By ~ 1

Author(s):

Azlan Zahid ◽

Long He ◽

Lihua Zeng ◽

Daeun Choi ◽

James Schupp ◽

...

Keyword(s):

Cutting Force ◽

Apple Tree ◽

Field Tests ◽

Force Sensor ◽

Pneumatic Cylinder ◽

List Type ◽

End Effector ◽

Wide Range ◽

Simulation Results ◽

Tree Pruning

HighlightsAn end-effector with two degrees of freedom (2R) was developed for pruning apple trees.A rational 2×2 relationship (R2 = 0.93) was found for ‘Fuji’ apple tree branch diameter and cutting force.Simulation showed that the cutter can be aligned in a wide range of orientations in a spherical workspace.The developed end-effector was able to cut branches up to 12 mm in diameter.Abstract. Robotics and automation technologies are now used extensively in agriculture, while production operations for tree fruit crops still largely depend on manual labor. Manual pruning is a labor-intensive and costly task in apple production. Robotic pruning is a potential solution, but it involves several challenges due to the unstructured work environment. This study focused on designing an end-effector prototype for pruning considering the maneuvering, spatial, mechanical, and horticultural requirements. Branch cutting force was measured with a thin force sensor to provide guidelines for the end-effector design. The test results indicated the relationship between the force required to cut different diameter branches with an R2 value of 0.93. The end-effector was developed using two rotary motors, a pneumatic cylinder, and a pair of bypass shear blades. A three-directional linear manipulator system and a control system were built for moving the end-effector to targeted locations. A mathematical model was developed for simulation of the workspace utilization and reachable points of the end-effector. The simulation results indicated that the end-effector can be aligned in a wide range of orientations of the cutter. Field tests were conducted for validation of the simulation results and performance assessment of the end-effector. The results indicated that the end-effector with the current parameter settings successfully cut branches up to 12 mm in diameter and was able to cut branches in a wide range of possible orientations in a given 3D space. The robotic end-effector developed in this study is a core component of an automated pruning system for fruit trees. In future work, an integrated manipulator system will be developed for branch accessibility with collision-free trajectories. Keywords: Malus × domestica (Borkh.), Pruning end-effector, Reachable-points simulation, Tree pruning.

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Simulation Modeling of Neural-Based Method of Multi-Sensor Output Signal Recognition

2006 IEEE Instrumentation and Measurement Technology Conference Proceedings ◽

10.1109/imtc.2006.236685 ◽

2006 ◽

Author(s):

I. Turchenko

Keyword(s):

Output Signal ◽

Simulation Modeling ◽

Signal Recognition ◽

Sensor Output

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Experimental Study on PCB Micro Drilling Force

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.246-247.1017 ◽

2012 ◽

Vol 246-247 ◽

pp. 1017-1021 ◽

Cited By ~ 1

Author(s):

Feng Gong ◽

Bai Qiang Chen ◽

Ji Bin Li

Keyword(s):

Experimental Study ◽

Cutting Force ◽

Printed Circuit Board ◽

Circuit Board ◽

Drilling Machine ◽

Drilling Force ◽

Printed Circuit ◽

Market Competitiveness ◽

Pcb Design ◽

Micro Drilling

With the development of high density, multi-functions, miniaturization and multi-layer on printed circuit board (PCB) design, great challenges have been presented to the miniaturization of drilling on PCB. In order to meet the hole precision, quality and improve the performance, efficiency of mechanical drilling, further research should be done on the cutting state. Kistler high-precision micro-force platform was used in this paper to test and analyze the cutting force, investigate the general laws of micro drilling, and optimize the parameters for HANS PCB drilling machine. Thereby, to improve the efficiency and precision of the drilling, range of processing, and increasing market competitiveness.

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Hall Sensor Output Signal Fault-Detection & Safety Implementation Logic

MATEC Web of Conferences ◽

10.1051/matecconf/20165901007 ◽

2016 ◽

Vol 59 ◽

pp. 01007 ◽

Cited By ~ 1

Author(s):

SangHun Lee ◽

HongSeuk Oh

Keyword(s):

Fault Detection ◽

Output Signal ◽

Hall Sensor ◽

Sensor Output

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Sensorless Cutting Force Monitoring Using Parallel Disturbance Observer

International Journal of Automation Technology ◽

10.20965/ijat.2009.p0415 ◽

2009 ◽

Vol 3 (4) ◽

pp. 415-421 ◽

Cited By ~ 12

Author(s):

Daisuke Kurihara ◽

◽

Yasuhiro Kakinuma ◽

Seiichiro Katsura ◽

Keyword(s):

Robust Control ◽

Cutting Force ◽

Disturbance Observer ◽

Force Sensor ◽

Force Estimation ◽

Machining Processes ◽

Current Reference ◽

Velocity Response ◽

Force Monitoring

Measuring cutting force is effective in monitoring machining processes, but requires that a force sensor be installed on the tool table. The parallel disturbance observer we propose in table control using velocity response and current reference realizes both robust control and cutting force estimation without additional sensors. Performance of this method was evaluated through simulation and experiments.

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The Measurement of Dynamic Cutting Force Data and its Application to the Prediction of Chatter

Journal of Mechanical Engineering Science ◽

10.1243/jmes_jour_1982_024_027_02 ◽

1982 ◽

Vol 24 (3) ◽

pp. 139-145

Author(s):

M. Burdekin ◽

S. E. Kilic

Keyword(s):

Machine Tool ◽

Cutting Force ◽

Orthogonal Cutting ◽

Cutting Conditions ◽

Cutting Force Coefficients ◽

Regenerative Chatter ◽

Dynamic Cutting Force ◽

Force Data ◽

Cut Surface ◽

Tangential Directions

A method and the related equipment to obtain dynamic cutting force coefficients under simulated regenerative chatter conditions are described. The coefficients in both thrust (normal to the cut surface) and the main cutting (tangential) directions for orthogonal cutting are presented for various cutting conditions. An algorithm which is developed to predict chatter instability by combining the receptance of a machine tool with the dynamic cutting data is also presented. Comparison of experimentally-determined stability charts of a centre lathe with the predicted ones is made to evaluate the reliability of the method.

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