scholarly journals Simplified Method of Microcontact Force Measurement by Using Micropressure Sensor

Micromachines ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 515
Author(s):  
Huamin Zhu ◽  
Fuzhong Zheng ◽  
Huiwen Leng ◽  
Cheng Zhang ◽  
Kun Luo ◽  
...  
Keyword(s):  
Output Voltage ◽  
Microelectromechanical Systems ◽  
Force Measurement ◽  
Low Cost ◽  
Rapid Development ◽  
Complex Structure ◽  
Force Output ◽  
Simulation Results ◽  
Contact Position ◽  
The Relationship

Microcontact force measurement is widely applied in micro/nano manufacturing, medicine and microelectromechanical systems. Most microcontact force measurements are performed by using mass comparators, nano-indenter and precision electronic balance, and weighing sensors. However, these instruments have a complex structure and high cost. Nevertheless, the rapid development of microsensor technology provides a new, simple and low-cost approach for microcontact force measurement. In this study, we present a method of microcontact force measurement by using micropressure sensors and study the relationship amongst the microcontact force, output voltage and contact position of the sensor. We use a microcapacitance pressure sensor as an example, then we perform a simulation calculation and construct a microcontact force experiment system to verify the simulation results. The experimental and simulation results are consistent. In addition, an equation that describes the relationship amongst the microcontact force, output voltage and contact position of the sensor is obtained. Based on this simple and low-cost method, we build a micro-manipulation system, which indicates that the micropressure sensors can be used to measure microcontact force in various applications easily and cost-effectively. Furthermore, it is considerably relevant to research and application in this field.

Design and Analysis of Constantan Thin Films Sensor for Monitoring Cutting Force

2014 ◽  
Vol 635-637 ◽  
pp. 882-885
Author(s):  
Yun Ping Cheng ◽  
Wen Ge Wu ◽  
Xiao Jun Du ◽  
Gui Ling Qiao
Keyword(s):  
Thin Film ◽  
Cutting Force ◽  
Output Voltage ◽  
Manufacturing Processes ◽  
Film Sensor ◽  
Thin Film Sensor ◽  
Finite Element Software ◽  
Input And Output ◽  
Simulation Results ◽  
The Relationship

Cutting force is one of important parameters for manufacturing processes. The traditional dynamometer is limited by size, machining environments, and so on. This paper introduces a new constantan thin film sensor which embedded on the holder of external turning tool to measure cutting force. The relationship between force and output voltage are deduced from theory. By using the finite element software, the analyses on induction and linearity capability of thin film sensor are simulated, and the influences of the location and thickness of film on the output voltage are analyzed. The results show that the linearity of input and output is good and the deviation between the calculated value and simulation results is identical. As the result, the constantan thin film sensor unit can be used to measure the cutting forces.

scholarly journals Design of Z Source Inverter based VSWECS with Improved PWM Control

2019 ◽  
Vol 8 (10) ◽  
pp. 1402-1407
Keyword(s):  
Output Voltage ◽  
Rapid Development ◽  
Voltage Gain ◽  
Variable Speed ◽  
Output Current ◽  
Wind Energy Conversion ◽  
Wind Energy Conversion Systems ◽  
Capacitor Voltage ◽  
Energy Conversion Systems ◽  
Simulation Results

With rapid development in Wind Energy Conversion Systems (WECS), various methods have been used to increase power generation from wind. In order to reach voltage gain as maximum in a variable speed WECS, an improved PWM method through varying shoot through time for Impedance source inverter is implemented in this paper. For a given modulation index, the correlation of voltage gain with capacitor voltage, and the device stress are analyzed in detail. For ‘various shoot through time ,the simulation results of voltage across capacitor, current through inductor ,output current and output voltage are obtained by using Simpower system tool in MATLAB/ Simulink and compared. The results have been confirmed for the developed experimental model

scholarly journals High-Efficiency Wavelet Compressive Fusion for Improving MEMS Array Performance

Sensors ◽  
2020 ◽  
Vol 20 (6) ◽  
pp. 1662 ◽  
Author(s):  
Siyuan Liang ◽  
Weilong Zhu ◽  
Feng Zhao ◽  
Congyi Wang
Keyword(s):  
Real Time ◽  
High Efficiency ◽  
Microelectromechanical Systems ◽  
Inertial Sensor ◽  
Low Cost ◽  
Rapid Development ◽  
Experimental Results ◽  
Zero Bias ◽  
Real Time Processing ◽  
Application Range

With the rapid development of microelectromechanical systems (MEMS) technology, low-cost MEMS inertial devices have been widely used for inertial navigation. However, their application range is greatly limited in some fields with high precision requirements because of their low precision and high noise. In this paper, to improve the performance of MEMS inertial devices, we propose a highly efficient optimal estimation algorithm for MEMS arrays based on wavelet compressive fusion (WCF). First, the algorithm uses the compression property of the multiscale wavelet transform to compress the original signal, fusing the compressive data based on the support. Second, threshold processing is performed on the fused wavelet coefficients. The simulation result demonstrates that the proposed algorithm performs well on the output of the inertial sensor array. Then, a ten-gyro array system is designed for collecting practical data, and the frequency of the embedded processor in our verification environment is 800 MHz. The experimental results show that, under the normal working conditions of the MEMS array system, the 100 ms input array data require an approximately 75 ms processing delay when employing the WCF algorithm to support real-time processing. Additionally, the zero-bias instability, angle random walk, and rate slope of the gyroscope are improved by 8.0, 8.0, and 9.5 dB, respectively, as compared with the original device. The experimental results demonstrate that the WCF algorithm has outstanding real-time performance and can effectively improve the accuracy of low-cost MEMS inertial devices.

Mobile Ordering System Based on Android

2013 ◽  
Vol 336-338 ◽  
pp. 2099-2102
Author(s):  
Hui Xin Ning
Keyword(s):  
Characteristic Function ◽  
Low Cost ◽  
Rapid Development ◽  
Mobile Internet ◽  
Internet Technology ◽  
Requirement Analysis ◽  
Simple Operation ◽  
Catering Industry ◽  
Android System ◽  
The Relationship

With the Rapid Development of Mobile Internet Technology, People Hope Access to Internet to get Information and Service Anywhere and Anytime Urgently. Catering Industry also Hopes to Expand the Scope of Business to Network. in this Paper, through the Requirement Analysis, Using the Currently Popular Android System as the Platform, the Authors Study the Mobile Ordering System Based on Android with the Help of Mobile Internet Technology. the System was Considered the Relationship between the Customers and the Sellers, had Established a Perfect Management Mode and Comprehensive Ordering Function, and Realized the Characteristic Function Based on Google Service. the System is Low Cost, Simple Operation, and Mobility. it Solves the Catering Industry’s Problems of High Cost on Manpower and Inconvenient Online Ordering.

30 Years of Progress in Viscometers and Rheometers

1999 ◽  
Vol 9 (2) ◽  
pp. 69-76 ◽  
Author(s):  
Howard A. Barnes ◽  
Harry Schimanski ◽  
Derek Bell
Keyword(s):  
Force Measurement ◽  
Low Cost ◽  
Rapid Development ◽  
Storage Device ◽  
Complex Flow ◽  
Newtonian Viscosity ◽  
Computing Power ◽  
History Of ◽  
Analyse Data ◽  
Constant Improvement

Abstract The history of commercial viscometry and rheometry over the last thirty years is summarised. In terms of those instruments that have established themselves in a lasting position in the field, we highlight the importance of a sound original idea, good marketing, and constant improvement as technology advances. Instruments in this area fall into three categories: simple, low-cost instruments to measure viscosity or at least an equivalent Newtonian viscosity; multi-speed instruments often able to record data on another display or storage device, and rheometers, i.e. instruments capable of a rotational shearing action, as well as one of the following: oscillation, creep and normal force measurement to give some measure of viscoelasticity. The advances in technology in many areas over the past 30 years have all fuelled the rapid development of instruments that has been nothing short of astonishing. Of especial importance has been the continuous developments of electric motors, and transducers, as well as the increases in speed and memory and reductions in price of digital processors and microprocessors. With this increased computing power perhaps with instruments using complex flow regimes it may be as easy to analyse data as with simple shearing now. There will always be, however, those who want to go to higher frequencies, lower deformations, etc., to meet those challenges of measuring the rheology of materials at the limits.

scholarly journals A Force Measurement Method Based on Flexible PDMS Grating

2020 ◽  
Vol 10 (7) ◽  
pp. 2296 ◽  
Author(s):  
Chengyu Jin ◽  
Cui Ma ◽  
Zhile Yang ◽  
Hui Lin
Keyword(s):  
High Performance ◽  
Measurement Method ◽  
Force Measurement ◽  
Low Cost ◽  
Rapid Development ◽  
Testing Machine ◽  
Light Spot ◽  
Curing Temperature ◽  
Line Spacing ◽  
Tension Testing

With the rapid development of flexible materials, various high-performance biocompatible flexible sensors have been proposed for specific measurement applications. Among these materials, polydimethylsiloxane (PDMS) is one of the most popular polymers by curing the mixture of pre-polymer (base) and cross-linker (curing agent). In this paper, a force measurement method based on PDMS grating is introduced. The PDMS grating is cast from a commercial master grating, which is precise, low-cost, and easy to follow. The elastic modulus can be controlled by the curing temperature and the mixing ratio. The PDMS grating is tested using a tension testing machine. As the stretching force increases, the grating line-spacing simultaneously increases and the diffraction light spot shifts. By capturing the light spot shift using a camera, the relationship between light spot position and stretching force is established and evaluated. Experimental results show that the linearity (R2) of the proposed method is better than 0.998, adding that the sensitivity is ~0.5–0.7N/mm and the accuracy is up to 0.05N.

Study and design of dual stator permanent magnet machine with spoke-type configurations using phase-group concentrated-coil windings

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1381-1389
Author(s):  
Dezhi Chen ◽  
Chengwu Diao ◽  
Zhiyu Feng ◽  
Shichong Zhang ◽  
Wenliang Zhao
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnets ◽  
Low Cost ◽  
Dynamic Performance ◽  
Torque Ripple ◽  
Permanent Magnet Machine ◽  
Torque Density ◽  
Phase Group ◽  
High Torque ◽  
Simulation Results

In this paper, a novel dual-stator permanent magnet machine (DsPmSynM) with low cost and high torque density is designed. The winding part of the DsPmSynM adopts phase-group concentrated-coil windings, and the permanent magnets are arranged by spoke-type. Firstly, the winding structure reduces the amount of copper at the end of the winding. Secondly, the electromagnetic torque ripple of DsPmSynM is suppressed by reducing the cogging torque. Furthermore, the dynamic performance of DsPmSynM is studied. Finally, the experimental results are compared with the simulation results.

scholarly journals A Multi-Loop Vehicle-Counting Method under Gray Mode and RGB Mode

2021 ◽  
Vol 11 (15) ◽  
pp. 6831
Author(s):  
Yue Chen ◽  
Jian Lu
Keyword(s):  
Intelligent Transportation Systems ◽  
High Efficiency ◽  
Road Traffic ◽  
Low Cost ◽  
Rapid Development ◽  
Intelligent Transportation ◽  
Transportation Systems ◽  
Counting Method ◽  
Moving Vehicle ◽  
Available Information

With the rapid development of road traffic, real-time vehicle counting is very important in the construction of intelligent transportation systems (ITSs). Compared with traditional technologies, the video-based method for vehicle counting shows great importance and huge advantages in its low cost, high efficiency, and flexibility. However, many methods find difficulty in balancing the accuracy and complexity of the algorithm. For example, compared with traditional and simple methods, deep learning methods may achieve higher precision, but they also greatly increase the complexity of the algorithm. In addition to that, most of the methods only work under one mode of color, which is a waste of available information. Considering the above, a multi-loop vehicle-counting method under gray mode and RGB mode was proposed in this paper. Under gray and RGB modes, the moving vehicle can be detected more completely; with the help of multiple loops, vehicle counting could better deal with different influencing factors, such as driving behavior, traffic environment, shooting angle, etc. The experimental results show that the proposed method is able to count vehicles with more than 98.5% accuracy while dealing with different road scenes.

A novel adaptable isometric strength analysis and exercise development system design

2021 ◽  
pp. 095441192110155
Author(s):  
Murat Fidan ◽  
Alper Bayrak ◽  
Umid Karli
Keyword(s):  
System Design ◽  
Lower Cost ◽  
Electronic Circuit ◽  
Force Measurement ◽  
Low Cost ◽  
Computer Software ◽  
Isometric Strength ◽  
Strength Analysis ◽  
Strength Measurement ◽  
Development System

In this study, a low-cost and adaptable isometric strength measurement and exercise development system are described. The implemented system consists of mechanical structure, force measurement sensor, electronic circuit, and computer software. Isometric-isotonic (via spring resistance) strength analysis and various exercise programs can be applied with the system. The developed system has a lower cost compared to its counterparts in the literature and has a structure that can be adapted to different machines and measuring methods. The operability and reliability of the isometric strength measurement and exercise development system have been proven by calibration tests.

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