A Novel Design of the Device for Measuring Draw and Plug Forces

2012 ◽  
Vol 542-543 ◽  
pp. 1029-1032
Author(s):  
Ye Hu ◽  
Zhao Jun Yang ◽  
Ming Jun Xiang ◽  
Zi Chen Qiu ◽  
Chuan Gui Yang ◽  
...  
Keyword(s):  
Data Conversion ◽  
Memory Module ◽  
Novel Device ◽  
Working Principle ◽  
Tool Shank ◽  
Novel Design

The purpose of this paper is to present a novel device for measuring draw and plug forces, which is composed chiefly of a pull stud, a top modified tool shank, a middle modified tool shank, a down modified tool shank, and an end cover. The modified tool shank structure is proposed, and the working principle of the device for measuring draw and plug forces is demonstrated. Also, the data conversion and memory module and the circuit principle are investigated.

scholarly journals Investigation of an Autofocusing Method for Visible Aerial Cameras Based on Image Processing Techniques

2016 ◽  
Vol 2016 ◽  
pp. 1-12
Author(s):  
Zhichao Chen ◽  
Tao Zhang
Keyword(s):  
Image Processing ◽  
Image Processing Techniques ◽  
Accuracy Requirement ◽  
Aerospace Applications ◽  
Evaluation Functions ◽  
Focus Depth ◽  
Practical Engineering ◽  
Working Principle ◽  
Processing Techniques ◽  
Novel Design

In order to realize the autofocusing in aerial camera, an autofocusing system is established and its characteristics such as working principle and optical-mechanical structure and focus evaluation function are investigated. The reason for defocusing in aviation camera is analyzed and several autofocusing methods along with appropriate focus evaluation functions are introduced based on the image processing techniques. The proposed autofocusing system is designed and implemented using two CMOS detectors. The experiment results showed that the proposed method met the aviation camera focusing accuracy requirement, and a maximum focusing error of less than half of the focus depth is achieved. The system designed in this paper can find the optical imaging focal plane in real-time; as such, this novel design has great potential in practical engineering, especially aerospace applications.

scholarly journals A Decoupling Design with T-Shape Structure for the Aluminum Nitride Gyroscope

Micromachines ◽  
2019 ◽  
Vol 10 (4) ◽  
pp. 244
Author(s):  
Yang ◽  
Si ◽  
Han ◽  
Zhang ◽  
Ning ◽  
...  
Keyword(s):  
Aluminum Nitride ◽  
Microelectromechanical Systems ◽  
Sense Mode ◽  
Drive Mode ◽  
Aln Film ◽  
Shape Structure ◽  
Mems Gyroscopes ◽  
Sense Electrode ◽  
Working Principle ◽  
Novel Design

This paper reports a novel design for the decoupling of microelectromechanical systems (MEMS) gyroscopes. The MEMS gyroscope is based on piezoelectric aluminum nitride (AlN) film, and the main structure is a mass hung by T-shape beams. A pair of parallel drive electrodes are symmetrically placed on the surface of the vertical bar for driving the oscillating mass. A serpentine sense electrode is placed on the lateral bar. When the gyroscope is oscillating in drive mode, charges with equal quantity and opposite sign will be polarized and distributed symmetrically along the lateral bar. These charges neutralize each other at the sense electrode. Therefore, no coupling signals can be detected from the sense electrode. This design can realize the decoupling between the drive mode and sense mode. In this work, the T-shape decoupled structure was designed as the key component of an AlN piezoelectric gyroscope and the whole structure was simulated by COMSOL Multiphysics 5.2a. The working principle of the decoupling is described in detail. Electrical properties were characterized by the dynamic signal analyzer. According to the test results, the drive mode and the sense mode are decoupled. The coefficient of orthogonal coupling is 1.55%.

Design and Performance Analysis of Application Specific Integrated Circuit for Internet of Things Application

2020 ◽  
Vol 18 (1) ◽  
pp. 31-38
Author(s):  
Vivek Pogra ◽  
Santosh Kumar Vishvakarma ◽  
Balwinder Raj
Keyword(s):  
Internet Of Things ◽  
Integrated Circuit ◽  
Direct Memory Access ◽  
Electronic Systems ◽  
Memory Module ◽  
Iot Platform ◽  
Application Specific Integrated Circuit ◽  
And Performance ◽  
Application Specific ◽  
Novel Design

This paper proposes a novel design of application specific integrated circuit (ASIC) which is capable of connecting sensor network and other electronic systems to the Internet. The transfer of data between different networks and internet of things (IoT) platform is controlled by IoT platform with the help of instruction sent to ASIC. ASIC will act as serial peripheral interface (SPI) master to all connected networks and data will be transferred serially between them. The different ASIC modules are SPI module, control module, memory module and data/instruction decoder with additional modules built-in self-test (BIST) and direct memory access (DMA). The proposed ASIC will consume less power as compared to conventional microcontroller/microprocessor due to the fact that it is designed for IoT applications. It is described in VHDL at RTL level and simulation is done on the Vivado 2016.2.

A Novel Cupped Solid-State Wave Gyroscope

2011 ◽  
Vol 110-116 ◽  
pp. 715-722
Author(s):  
Tao Yi ◽  
Xue Zhong Wu ◽  
Ding Bang Xiao ◽  
Xiang Xi ◽  
Ying Qi Tan
Keyword(s):  
Solid State ◽  
Piezoelectric Effect ◽  
Structural Features ◽  
Mode Frequency ◽  
The Novel ◽  
Q Factor ◽  
Design Scheme ◽  
State Wave ◽  
Working Principle ◽  
Novel Design

Aiming at improving the Q-factor and simplifying the fabricating process of the cupped solid-state wave Gyroscope, a novel cupped solid-state wave gyroscope based on piezoelectric effect is presented in this paper. The sensor has a novel cupped metallic resonator comprises of a cone shell and eight thin flat beams. The working principle of the gyroscope is validated by FEM. Compared with conventional solid-stated gyroscopes, the novel structural features improve the Q-factor and simplify the fabricating process of the gyroscope. The prototypal gyroscope is fabricated and tested, the work mode frequency is about 3979Hz, and the Q-factor is over 8000 in atmosphere. The side-lobes in the output signal’s FFT curve validate the novel design scheme.

scholarly journals Vibrating barrier: a novel device for the passive control of structures under ground motion

2015 ◽  
Vol 471 (2179) ◽  
pp. 20150075 ◽  
Author(s):  
P. Cacciola ◽  
A. Tombari
Keyword(s):  
Ground Motion ◽  
Passive Control ◽  
Structural Response ◽  
Harmonic Excitation ◽  
The Novel ◽  
Closed Form Solutions ◽  
Novel Device ◽  
Adjacent Structures ◽  
Working Principle ◽  
Propagation Of Waves

A novel device, called vibrating barrier (ViBa), that aims to reduce the vibrations of adjacent structures subjected to ground motion waves is proposed. The ViBa is a structure buried in the soil and detached from surrounding buildings that is able to absorb a significant portion of the dynamic energy arising from the ground motion. The working principle exploits the dynamic interaction among vibrating structures due to the propagation of waves through the soil, namely the structure–soil–structure interaction. The underlying theoretical aspects of the novel control strategy are scrutinized along with its numerical modelling. Closed-form solutions are also derived to design the ViBa in the case of harmonic excitation. Numerical and experimental analyses are performed in order to investigate the efficiency of the device in mitigating the effects of ground motion waves on the structural response. A significant reduction in the maximum structural acceleration of 87% has been achieved experimentally.

Pump Design for a Portable Renal Replacement System

2010 ◽  
Author(s):  
Jane Kang ◽  
Tamera Scholz ◽  
Jason Weaver ◽  
David N. Ku ◽  
David W. Rosen
Keyword(s):  
Flow Rate ◽  
Blood Clotting ◽  
Manufacturing Cost ◽  
Pump Design ◽  
Working Principle ◽  
Replacement System ◽  
Reliable Design ◽  
Flexible Tubes ◽  
Novel Design

This work proposes a small, light, valve-less pump design for a portable renal replacement system. By analyzing the working principle of the pump and exploring the design space using an analytical pump model, we developed a novel design for a cam-driven finger pump. Several cams sequentially compress fingers, which compress flexible tubes, thus eliminating valves. Either changing the speed of the motor or size of the tube can control the flow rate. In vitro experiments conducted with whole blood using the pump measured Creatinine levels over time, and the results verify the design for the portable renal replacement system. The proposed pump design is smaller than 153 cm3 and consumes less than 1W while providing a flow rate of more than 100ml/min for both blood and dialysate flows. The smallest pump of a portable renal replacement system in the literature uses check valves, which considerably increase the overall manufacturing cost and possibility of blood clotting. Compared to that pump, the proposed pump design achieved reduction in size by 52% and savings in energy consumption by 89% with the removal of valves. This simple and reliable design substantially reduces the size requirements of a portable renal replacement system.

Pump Design for a Portable Renal Replacement System

2011 ◽  
Vol 5 (3) ◽  
Author(s):  
Jane Kang ◽  
Tamera Scholz ◽  
Jason D. Weaver ◽  
David N. Ku ◽  
David W. Rosen
Keyword(s):  
Flow Rate ◽  
Manufacturing Cost ◽  
Pump Design ◽  
Valveless Pump ◽  
Working Principle ◽  
Replacement System ◽  
Reliable Design ◽  
Flexible Tubes ◽  
Novel Design

This work proposes a small, light, valveless pump design for a portable renal replacement system. By analyzing the working principle of the pump and exploring the design space using an analytical pump model, we developed a novel design for a cam-driven finger pump. Several cams sequentially compress fingers, which compress flexible tubes; thus eliminating valves. Changing the speed of the motor or size of the tube controls the flow rate. In vitro experiments conducted with whole blood using the pump measured Creatinine levels over time, and the results verify the design for the portable renal replacement system. The proposed pump design is smaller than 153 cm3 and consumes less than 1 W while providing a flow rate of more than 100 ml/min for both blood and dialysate flows. The smallest pump of a portable renal replacement system in the literature uses check valves, which considerably increase the overall manufacturing cost and possibility of blood clotting. Compared to that pump, the proposed pump design achieved reduction in size by 52% and savings in energy consumption by 89% with the removal of valves. This simple and reliable design substantially reduces the size requirements of a portable renal replacement system.

A Novel Design of Thermostat Based on Fishing Line Muscles

2016 ◽  
Author(s):  
Lokesh Saharan ◽  
Yonas Tadesse
Keyword(s):  
Large Strain ◽  
Weight Ratio ◽  
Polymeric Materials ◽  
Cost Effective ◽  
Rate Of Change ◽  
Devices And Instruments ◽  
Working Principle ◽  
Soft Actuators ◽  
Opening And Closing ◽  
Novel Design

Recently reported fishing line muscles are soft actuators which can be fabricated by twist insertion in commercially available Nylon 6 monofilament fibers under certain amount of tension. Annealing and Training are needed to retain the twist inserted to complete the fabrication process. These actuators are soft polymeric materials with high stresses, large strain, relatively high power to weight ratio when compared to conventional actuators apart from being cost effective. Though the performance of the muscles is largely dependent on parameters of fabrication, these actuators deform linearly in response to thermal gradient. Actuation can be triggered by varying temperature by any means such as blowing hot fluid or resistive (Joule) heating. The response of the muscles depends on the rate of change of temperature, magnitude of temperature, and applied load. We recognized the potential application of the muscle as a mechanical thermostat as a new design or for use in opening and closing a control valves. Mostly the working range for this muscle is 50–150°C, which is the working range of a wide variety of devices and instruments. This study presents a novel design, fabrication, working principle and preliminary experiments of the thermostat device that is light in weight, simple to manufacture and cost effective.

Design of a measurement system for use in static balancing a two-axis gimbaled antenna

2014 ◽  
Vol 228 (13) ◽  
pp. 2530-2541 ◽  
Author(s):  
WX Yan ◽  
ST Zhan ◽  
ZY Qian ◽  
Z Fu ◽  
YZ Zhao
Keyword(s):  
Measurement System ◽  
High Speed ◽  
Measurement Accuracy ◽  
Key Factors ◽  
Measurement Principle ◽  
Working Principle ◽  
Control Configuration ◽  
Major Factors ◽  
Two Degree Of Freedom ◽  
Novel Design

The two-axis gimbaled antenna’s performance can be greatly improved if it is statically balanced. This paper intends to present a novel design of a measurement system for use in statically balancing a two-axis gimbaled antenna mounted on an aircraft. The details of the measurement system and its working principle are explained, including the dynamics of the two-degree-of-freedom flexure-hinge leverage and the control configuration of the measurement system. The measurement principle is proposed after the theoretical measurement uncertainties estimated and the key factors that determine the measurement accuracy are found. By controlling the uncertainty induced from the major factors, the measurement accuracy can be finally controlled. The measurement result is proved sufficiently accurate by means of High-speed centrifuge method.

Experimental study on the behaviour of an electrorheological double miniature valve

2020 ◽  
pp. 1045389X2096605
Author(s):  
Tobias Bauerochs ◽  
Stephan Ulrich ◽  
Rainer Bruns
Keyword(s):  
Installation Space ◽  
Hydraulic Systems ◽  
Pressure Drops ◽  
Production Methods ◽  
Viscosity Increase ◽  
Macro Scale ◽  
Conventional Production ◽  
Working Principle ◽  
Power Densities ◽  
Novel Design

In many hydraulic systems, actuators are controlled by conventional valves that require a lot of installation space. They consist of many moving parts which make them prone to errors. Miniature valves with high power densities using the electro-rheological technology can help to reduce the space requirement and possible defects. They can generate a local and reversible viscosity increase to realize higher usable pressure drops. Until now, some valves using this working principle are macro-scaled for the use in conventional hydraulics and needed too much space. Others are microvalves for microfluidics and therefore could not generate a sufficiently high pressure drop. Intermediary sizes such as miniature valves combined with conventional hydraulics have not yet been developed satisfactorily. For this reason, a medium-sized valve was designed to be used in conventional hydraulics but requires considerably less space. Furthermore, it is manufacturable using conventional production methods. The proof of function of this new miniature valve confirmed the concept. Experiments showed that the measured ER behaviour is similar to previous results of macro scale ER valves. The valve reproducibly generated pressures of more than 5 bar without any leakage. This proved that a valve with this novel design is usable in conventional hydraulic systems.

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