Transmission Error Analysis of a Parallel Symmetric Geared Linkage Mechanism

1992 ◽  
Author(s):  
Ji-Hou Yang
Keyword(s):  
Error Analysis ◽  
Power Transmission ◽  
Transmission Error ◽  
Force Transmission ◽  
Linkage Mechanism ◽  
Design And Manufacturing ◽  
Actual Use ◽  
Low Efficiency ◽  
Two Sides ◽  
Input Torque

Abstract Many machine systms consist of parallel symmetric mechanisms, but-the unsymmetric force transmission between two sides may often happen, due to the dimentional errors of mechanism and the clearences in the kinematic pairs. This makes a machine of low efficiency and bad power transmission capacity. In this work, as a model of a punch press, a parallel symmetric geared crank and slider mechanism is analyzed about the unsymmetric input torque and the reactions in the kinematic pairs between two sides due to the errors of input angle and radius of crank. The behavior of journal clearences during the force transmitting process are also considered. The analyzed results are well suit to the experimental results and hence have actual use to the design and manufacturing of machine.

Modeling and Analysis of the Transmission Characteristics of a Geared Linkage Mechanism

2011 ◽  
Vol 311-313 ◽  
pp. 1475-1480
Author(s):  
Wei Yang Zhang ◽  
Cun Yun Pan ◽  
Hao Deng ◽  
Hai Jun Xu ◽  
Hu Chen
Keyword(s):  
Power Transmission ◽  
Force Transmission ◽  
Linkage Mechanism ◽  
Transmission Characteristics ◽  
Modeling And Analysis ◽  
Rotation Direction ◽  
Transmission Equipment ◽  
Torque Transmission ◽  
Transmission Angle ◽  
Output Component

Twin-rotor piston engine is exceedingly compact, and several times more power dense than conventional IC engines. It is necessary to analyze the transmission characteristics of the special geared linkage mechanism which is used for the power transmission equipment of the engine. Transmission angle is mainly adopted in order to obtain the transmission characteristics. Firstly, the force transmission behavior of one end of the output component is derived through the force analysis of the planet gear. Secondly, the torque transmission angle is proposed based on the multi-point force situation. Lastly, the torque transmission angle is depicted and analyzed in detail through the equivalent composite force graphical method. The result shows that the geared linkage mechanism will not produce counteractive torque to the rotation direction and has no dead point.

Force Transmission Error Analysis for a High-Pressure Single-Sinker Magnetic Suspension Densimeter

2010 ◽  
Vol 31 (4-5) ◽  
pp. 698-709 ◽  
Author(s):  
Diego E. Cristancho ◽  
Ivan D. Mantilla ◽  
Saquib Ejaz ◽  
Kenneth R. Hall ◽  
Gustavo A. Iglesias-Silva ◽  
...  
Keyword(s):  
High Pressure ◽  
Error Analysis ◽  
Transmission Error ◽  
Magnetic Suspension ◽  
Force Transmission

scholarly journals Density Measurements of an Air-Like Binary Mixture over the Temperature Range from 100 K to 298.15 K at Pressures up to 8.0 MPa

2021 ◽  
Vol 42 (9) ◽  
Author(s):  
Nils von Preetzmann ◽  
Reiner Kleinrahm ◽  
Philipp Eckmann ◽  
Giuseppe Cavuoto ◽  
Markus Richter
Keyword(s):  
Binary Mixture ◽  
Saturated Vapor ◽  
Saturation Pressure ◽  
Transmission Error ◽  
Magnetic Suspension ◽  
Mixture Component ◽  
Liquid Region ◽  
Force Transmission ◽  
Temperature Range ◽  
Combined Uncertainty

AbstractDensities of an air-like binary mixture (0.2094 oxygen + 0.7906 nitrogen, mole fractions) were measured along six isotherms over the temperature range from 100 K to 298.15 K at pressures up to 8.0 MPa, using a low-temperature single-sinker magnetic suspension densimeter. The measurements were carried out at T = (100, 115, and 130) K in the homogeneous gas and liquid region, and at T = (145, 220, and 298.15) K in the supercritical region (critical temperature TC = 132.35 K); in total, we present results for 52 (T, p) state points. The relative expanded combined uncertainty (k = 2) of the experimental densities was estimated to be between 0.03 % and 0.13 %, except for four values near the critical point. The largest error is caused by the magnetic suspension coupling in combination with the mixture component oxygen, which is strongly paramagnetic; the resulting force transmission error is up to 1.1 %. However, this error can be corrected with a proven correction model to an uncertainty contribution in density of less than 0.044 %. Due to a supercritical liquefaction procedure and the integration of a special VLE-cell, it was possible to measure densities in the homogeneous liquid phase without changing the composition of the liquefied mixture. Moreover, saturated liquid and saturated vapor densities were determined at T = (100, 115, and 130) K by extrapolation of the experimental single-phase densities to the saturation pressure. The new experimental results were compared with the mixture model of Lemmon et al. for the system (nitrogen + argon + oxygen) and the GERG-2008 equation of state.

scholarly journals Transmission Error Analysis of Conical Involute Gears

2012 ◽  
Vol 78 (791) ◽  
pp. 2624-2634 ◽  
Author(s):  
Kunihiko MORIKAWA ◽  
Masaharu KOMORI ◽  
Masanori NAGATA ◽  
Izumi UEDA ◽  
Zhonghou WANG
Keyword(s):  
Error Analysis ◽  
Transmission Error ◽  
Involute Gears

Transmission error analysis of cycloidal pinwheel meshing pair based on rolling–sliding contact

2021 ◽  
Vol 43 (7) ◽  
Author(s):  
Jian Huang ◽  
Chaoyang Li ◽  
Ye Zhang ◽  
Yanhua Wang ◽  
Bingkui Chen
Keyword(s):  
Error Analysis ◽  
Transmission Error ◽  
Sliding Contact

Design and Implement of Cable Tunnel Monitoring System based on Environmental Engineering

2020 ◽  
Vol 51 (4) ◽  
pp. 01-02
Author(s):  
Thương Liễu
Keyword(s):  
Monitoring System ◽  
Power Transmission ◽  
Cutting Edge ◽  
Environmental Engineering ◽  
Force Transmission ◽  
Tunnel Monitoring ◽  
Taking Care

At present, the quick advancement of intensity flexibly has carried incredible difficulties to the protected activity of the link and the counteraction of mishaps in power transmission. In any case, utilizing customary manual strategies to keep up the link doesn't satisfy the current need. Accordingly, dealing with the activity of the links by means of cutting edge PC innovation is critical for the force transmission. In this paper, we build up a natural designing based observing framework for link passage to give the ongoing checking just as the mishap taking care of for link activity. It is another answer for the administration of links activity. The paper breaks down the structure of the framework, expounds on the execute, shows the use of the framework lastly makes the end.

scholarly journals Evaluation of the Coordination of Structural Layers in the Design of Asphalt Pavement

2020 ◽  
Vol 10 (9) ◽  
pp. 3178
Author(s):  
Hao Li ◽  
Naren Fang ◽  
Xuancang Wang ◽  
Chuanhai Wu ◽  
Yang Fang
Keyword(s):  
Structural Design ◽  
Asphalt Pavement ◽  
Material Design ◽  
Evaluation Index ◽  
Area Index ◽  
Test Road ◽  
Actual Use ◽  
Pavement Structure ◽  
Low Efficiency ◽  
Structural Layer

The purpose of asphalt pavement structural design is to get a materially-coordinated and structurally-durable product, and a pavement structure with good road performance by combining the structural layer materials reasonably. However, due to lack of a rational evaluation index on the parameter combinations of structural layer materials, the structural layer materials are poor in terms of coordination, have low efficiency, and the actual use period is much lower than the designed working life. Therefore, it is very important to conduct research evaluating the coordination of the structural layer materials. In this study, the sensitivity of mechanical parameters and equivalent envelope area are proposed as new indexes to evaluate the coordination of material design of asphalt pavement structure layers. Software is developed to calculate the equivalent envelope area that can quantitatively evaluate the coordination among different layers and visualize the mechanical transfer behavior of each structural layer. Based on the equivalent envelope area index, this study incorporates two new steps in the design of pavements, namely the structural form comparison and optimization, and proposes a new structural design process. Finally, the rationality and reliability of the equivalent envelope area index are verified by presenting fatigue life calculation and field verification in a test road. The results propose a clear evaluation index of the coordination of material design of each structural layer, which makes the structural design of the asphalt pavement more scientific and reasonable.

scholarly journals An Adaptive Current Limiting Controller for a Wireless Power Transmission System Energized by a PV Generator

Electronics ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 1648
Author(s):  
Ali Jafer Mahdi ◽  
Shah Fahad ◽  
Wenhu Tang
Keyword(s):  
Resonant Frequency ◽  
Power Transmission ◽  
Renewable Energy Sources ◽  
Transmission System ◽  
Consumer Electronics ◽  
Variable Load ◽  
Wireless Power ◽  
Wireless Power Transmission ◽  
Power Transmission System ◽  
Low Efficiency

The use of a wireless power transmission system (WPTS) in modern applications, such as consumer electronics, renewable energy sources (RESs) and electric vehicles (EVs), can significantly increase the safety and convenience of the power supply. However, low efficiency is a major hurdle to the use of a WPTS in these applications. In this article, an adaptive virtual impedance controller (AVIC) is presented to enhance the wireless power transfer (WPT) efficiency of a photovoltaic generator (PVG) to the load. In the proposed controller, a unique method is employed to adaptively estimate the coefficient of coupling and resonant frequency of the WPTS coils as a function of the distance between the coils. Moreover, a modified incremental conductance (IC) based maximum power tracking (MIC-MPPT) technique is presented to operate the PVG at MPPT mode. The proposed MIC-MPPT is tested via a hardware prototype and the controller validation is carried out in the MATLAB/SIMULINK environment under various uncertainties, such as intermittent irradiance, variable load, and the distance between transmitter (Tx) and receiver (Rx) coils. Finally, a comparative analysis between the proposed controller and the conventional non-adaptive and adaptive resonant frequency controller is presented which confirms the superiority of the proposed controller.

scholarly journals Analysis of the Single Toggle Jaw Crusher Force Transmission Characteristics

2016 ◽  
Vol 2016 ◽  
pp. 1-9
Author(s):  
Moses Frank Oduori ◽  
David Masinde Munyasi ◽  
Stephen Mwenje Mutuli
Keyword(s):  
Mean Value ◽  
Force Transmission ◽  
Transmission Characteristics ◽  
Dead Weight ◽  
Mechanical Advantage ◽  
Jaw Crusher ◽  
Output Torque ◽  
The Mean ◽  
Balance Of Forces ◽  
Input Torque

This paper sets out to perform a static force analysis of the single toggle jaw crusher mechanism and to obtain the force transmission characteristics of the mechanism. In order to obtain force transmission metrics that are characteristic of the structure of the mechanism, such influences as friction, dead weight, and inertia are considered to be extraneous and neglected. Equations are obtained by considering the balance of forces at the moving joints and appropriately relating these to the input torque and the output torque. A mechanical advantage, the corresponding transmitted torque, and the variations thereof, during the cycle of motion of the mechanism, are obtained. The mechanical advantage that characterizes the mechanism is calculated as the mean value over the active crushing stroke of the mechanism. The force transmission characteristics can be used as criteria for the comparison of different jaw crusher mechanism designs in order to select the most suitable design for a given application. The equations obtained can also be used in estimating the forces sustained by the components of the mechanism.

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