A 2-D PVDF force sensing system for micro-manipulation and micro-assembly

2003 ◽  
Author(s):  
C.K.M. Fung ◽  
I. Elhajj ◽  
W.J. Li ◽  
Ning Xi
Keyword(s):  
Force Sensing ◽  
Micro Assembly ◽  
Sensing System

Flexible and Wearable GRF and EMG Sensors Enabled Locomotion Mode Recognition for IoHT Based In-home Rehabilitation

2020 ◽  
Author(s):  
Chaoming Fang ◽  
Yixuan Wang ◽  
Shuo Gao
Keyword(s):  
Sensitive Element ◽  
Small Volume ◽  
Peak Stress ◽  
Higher Learning ◽  
Force Sensing ◽  
Sensing System ◽  
Mode Recognition ◽  
Locomotion Mode ◽  
Stress Sensing ◽  
Manipulation Process

In order to quantify the manipulation process of acupuncture, in this article, a piezoelectric glove based wearable stress sensing system is presented. Served as the sensitive element with small volume and high tensile resistance, PVDF greatly meet the need of quantitative analysis. Through piezoelectric force sensing glove, the system is capable of detecting both perpendicular stress as well as shear stress. Besides, key parameters including peak stress at needle are detected and extracted, potentially allowing for a higher learning efficiency hence advancing the development of acupuncture.

Fiber Bragg Grating Force Sensing System with Temperature Compensation Scheme

2013 ◽  
Vol 711 ◽  
pp. 486-490 ◽  
Author(s):  
Min Yuan Hsieh ◽  
Chia Chin Chiang ◽  
Jian Cin Chao
Keyword(s):  
Fiber Bragg Grating ◽  
Temperature Compensation ◽  
Force Sensing ◽  
Bragg Grating ◽  
Modulation Scheme ◽  
Fiber Grating ◽  
Average Temperature ◽  
Long Period ◽  
Sensing System ◽  
Period Fiber Grating

Current study presented a simple, temperature-insensitive fiber Bragg grating (FBG) force sensing system. It is based on an optical intensity modulation scheme with a corrugated long-period fiber grating (CLPFG) filter. The temperature effect of signal variation is about 6%. Through FBG temperature compensating scheme the average temperature sensitivity is improved obviously (0.06 mV/°C).

Overview of Micro-Force Sensing Methods

2013 ◽  
Vol 462-463 ◽  
pp. 25-31 ◽  
Author(s):  
Chao Zhe Ma ◽  
Jin Song Du ◽  
Yi Yang Liu ◽  
Yun Kai Chu
Keyword(s):  
Basic Principle ◽  
Automatic Processing ◽  
Paper Analysis ◽  
Force Sensing ◽  
Detection Accuracy ◽  
Important Research ◽  
High Quality ◽  
Micro Assembly ◽  
Processing Level

At present, reliable micro-force sensing is one of the most important research for micromanipulation and micro-assembly. Six kinds of methods to detect micro-force are described in this paper. Analysis of the basic principle and detection accuracy of each sensing method, and applications in micro-assembly and micromanipulation are briefly introduced. The purpose of this paper is to be useful to provide some references for scholars engaging in the micro-force sensing, which in turn promotes automatic processing level of micro-assembly and micromanipulation to reliably manufacture micro devices of high quality.

scholarly journals Electromechanical gripper with force sensing system

2019 ◽  
Vol 62 (1) ◽  
pp. 93-96
Author(s):  
A.A. Margun ◽  
D.N. Bazylev ◽  
K.A. Zimenko ◽  
P.D. Vakhviyanova
Keyword(s):  
Force Sensing ◽  
Sensing System

scholarly journals Electromagnetic Modeling and Structure Optimization of a Spherical Force Sensing System

Sensors ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 552
Author(s):  
Liang Yan ◽  
Yinghuang Liu ◽  
Zongxia Jiao
Keyword(s):  
Analytical Model ◽  
Structure Optimization ◽  
Experimental Result ◽  
Force Sensing ◽  
Control Force ◽  
Direct Drive ◽  
Force Output ◽  
Cogging Torque ◽  
Sensing System ◽  
Output Performance

Force sensing system (FSS) is widely used to simulate the control force of aircrafts for pilots. Conventional FSS employs multiple single-axis motors and complex transmission mechanisms to achieve multiple degree-of-freedom (DOF) force output of joystick, which may cause mismatched inertia and affect the output performance of FSS significantly. Therefore, one novel FSS with multiple DOF direct-drive spherical actuator is proposed in this paper to reduce the simulator’s extra inertia. To analyze its output performance systematically, a hybrid modeling method is proposed to formulate both Ampere torque and cogging torque mathematically. Equivalent current method along with Ampere force law is used to obtain the Ampere torque due to irregular structure of magnet and coil poles. The cogging torque is then obtained from airgap flux density via Maxwell stress method. From the derived analytical model, an adaptive particle swarm optimization (PSO) algorithm based on expectation (the average value of minimum errors) is proposed for multiple-parameter structure optimization. It can avoid local optimization effectively. The study shows that the optimized value greatly helps to improve the torque generation. Then, one research prototype and one testbed is developed. The comparison between experimental result and analytical model shows that the two sets of data fit with each other well. Therefore, the analytical model could be employed for motion control of the system at the next stage.

scholarly journals Biocompatible Cantilevers for Mechanical Characterization of Zebrafish Embryos using Image Analysis

Sensors ◽  
2019 ◽  
Vol 19 (7) ◽  
pp. 1506 ◽  
Author(s):  
Yuji Tomizawa ◽  
Krishna Dixit ◽  
David Daggett ◽  
Kazunori Hoshino
Keyword(s):  
Image Analysis ◽  
Mechanical Characterization ◽  
Size Range ◽  
Strain Gauges ◽  
Force Sensing ◽  
Zebrafish Embryos ◽  
Microscopic Image ◽  
Sensing System ◽  
Micrometer Scale

We have developed a force sensing system to continuously evaluate the mechanical elasticity of micrometer-scale (a few hundred micrometers to a millimeter) live tissues. The sensing is achieved by measuring the deflection of force sensitive cantilevers through microscopic image analysis, which does not require electrical strain gauges. Cantilevers made of biocompatible polydimethylsiloxane (PDMS) were actuated by a piezoelectric actuator and functioned as a pair of chopsticks to measure the stiffness of the specimen. The dimensions of the cantilevers were easily adjusted to match the size, range, and stiffness of the zebrafish samples. In this paper, we demonstrated the versatility of this technique by measuring the mechanical elasticity of zebrafish embryos at different stages of development. The stiffness of zebrafish embryos was measured once per hour for 9 h. From the experimental results, we successfully quantified the stiffness change of zebrafish embryos during embryonic development.

Investigating chorion softening of zebrafish embryos with a microrobotic force sensing system

2005 ◽  
Vol 38 (6) ◽  
pp. 1359-1363 ◽  
Author(s):  
Deok-Ho Kim ◽  
Yu Sun ◽  
Seok Yun ◽  
Sang Ho Lee ◽  
Byungkyu Kim
Keyword(s):  
Force Sensing ◽  
Zebrafish Embryos ◽  
Sensing System
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