A Study on the Modelling and Simulation of Part Motion in Vibratory Feeding

2010 ◽  
Vol 34-35 ◽  
pp. 2006-2010
Author(s):  
L. Han ◽  
J.X. Gao
Keyword(s):  
Mathematical Model ◽  
Computer Simulation ◽  
Modelling And Simulation ◽  
Experimental Results ◽  
Feeding System ◽  
Assembly Automation ◽  
Simulation Results ◽  
Part Motion ◽  
Vibratory Feeding

It is known that vibratory feeders are the most versatile of all hopper feeding devices for small engineering parts and play a key role in assembly automation. This work develops a mathematical model of the part motion in vibratory feeding, from which how the part works can be better known. A computer simulation programmed with MATLAB has been made to predict the conveying velocity of the parts in vibration feeding system, and furthermore, experiments have been carried out for verification purpose. The experimental results show that the simulation results are reasonable, and hence can be used to improve the design of vibratory feeding system.

Modelling and Simulation of Forward Kinematics for Planar 3-DOF Parallel Robot Based on Simulink

2013 ◽  
Vol 397-400 ◽  
pp. 1552-1557 ◽  
Author(s):  
Xiao Zheng Dang ◽  
Liang Sheng Zhou ◽  
Ling Ping Liao ◽  
Dong Liang
Keyword(s):  
Mathematical Model ◽  
Stress State ◽  
Analytical Approach ◽  
Theoretical Foundation ◽  
Parallel Robot ◽  
Parallel Robots ◽  
Modelling And Simulation ◽  
Forward Kinematics ◽  
Machine System ◽  
Simulation Results

Parallel robots are widely used in the machinery industry. In this paper, a planar 3-RRR parallel robot is researched. The forward kinematics mathematical model is established for this kind of mechanism. On the basis of it, a relevant simulation is carried out through MATLAB/Simulink. Thus, the motion rules and stress state for all parts of the mechanism are described vividly The simulation results show that this method is much more effective and efficient when the simulation is implemented for a certain machine system. Meanwhile, it provides a theoretical foundation and a better analytical approach of simulation for the design and analysis of complex multi-linkage mechanisms in the future.

The effect of fractionality nature in differences between computer simulation and experimental results of a chaotic circuit

Open Physics ◽  
2013 ◽  
Vol 11 (6) ◽  
Author(s):  
Salman Faraji ◽  
Mohammad Tavazoei
Keyword(s):  
Computer Simulation ◽  
Experimental Results ◽  
Chaotic Circuit ◽  
Chaotic Circuits ◽  
Simulation Results

AbstractIn practice, some differences are usually observed between computer simulation and experimental results of a chaotic circuit. In this paper, it is tried to obtain computer simulation results having more correlation with those obtained in practice by using more realistic models for chaotic circuits. This goal is achieved by considering the fractionality nature of electrical capacitors in the model of a chaotic circuit.

scholarly journals Computer Simulation of Noise Effects of the Neighborhood of Stimulus Threshold for a Mathematical Model of Homeostatic Regulation of Sleep-Wake Cycles

Complexity ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Wuyin Jin ◽  
Qian Lin ◽  
An Wang ◽  
Chunni Wang
Keyword(s):  
Mathematical Model ◽  
Computer Simulation ◽  
Regulatory Mechanism ◽  
Sine Function ◽  
Homeostatic Regulation ◽  
External Current ◽  
Noise Effects ◽  
Falling Asleep ◽  
Current Input ◽  
Simulation Results

The noise effects on a homeostatic regulation of sleep-wake cycles’ neuronal mathematical model determined by the hypocretin/orexin and the local glutamate interneurons spatiotemporal behaviors are studied within the neighborhood of stimulus threshold in this work; the neuronal noise added to the stimulus, the conductance, and the activation variable of the modulation function are investigated, respectively, based on a circadian input skewed in sine function. The computer simulation results suggested that the increased amplitude of external current input will lead to the fact that awakening time is advanced but the sleepy time remains the same; for the bigger conductance and modulation noise, the regulatory mechanism of the model sometimes will be collapsed and the coupled two neurons of the model show very irregular activities; the falling asleep or wake transform appears at nondeterminate time.

scholarly journals THERMOELECTRICAL PROCESSES SIMULATION IN RESISTIVE SUPERCONDUCTING FAULT CURRENT LIMITER

2014 ◽  
pp. 100-106
Author(s):  
Dmytro Fedasyuk ◽  
Pavlo Serdyuk
Keyword(s):  
Mathematical Model ◽  
Computer Simulation ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Electrical Behaviour ◽  
Superconducting Fault Current Limiter ◽  
Current Limiter ◽  
Simulation Results ◽  
The Mathematical Model

Simulations of superconducting fault current limiter (SFCL) include modelling of thermal and electrical behaviour of the limiter. In this paper the mathematical model for the analysis of thermoelectrical processes in resistive superconducting fault current limiter for microelectronics devices protection is presented. An effective and fast halfanalytical computer simulation of the model is presented. Simulation results are presented.

Simulation Study of the Interaction between Respiration and the Cardiovascular System

1997 ◽  
Vol 36 (04/05) ◽  
pp. 261-263 ◽  
Author(s):  
Jing Bai ◽  
Hongli Lu ◽  
Jupeng Zhang ◽  
Xiaoqiang Zhou
Keyword(s):  
Mathematical Model ◽  
Computer Simulation ◽  
Cardiovascular System ◽  
Simulation Study ◽  
External Pressure ◽  
Respiratory Pattern ◽  
Simulation Studies ◽  
Simulation Results ◽  
Thoracic And Abdominal ◽  
Physiological Systems

Abstract.Many studies have been done on the respiratory and the cardiovascular system. Among them, only a few are on the interaction of these two physiologic systems. To explore the mechanism of the integration of these two physiological systems, computer simulation has been done; we report the preliminary results obtained in our laboratory. In this study, a mathematical model of the cardiovascular system integrated with the respiratory mechanical system has been established. The model is based on our previous work on cardiovascular modeling. The previous lumped lungi model has been replaced by a multielement model with more detail. Inter- thoracic and abdominal pressures are modeled as external pressure sources on the related cardiovascular elements. Using this model, a sequence of simulation studies have been carried out. Different respiratory modes have been simulated and the different effects are observed in the simulation results. The results indicate that by following a certain respiratory pattern, the circulation status can be improved. These results agree with clinical observations.Keywords: Mathematical Model, Respiration Mode, Cardiovascular System, Computer Simulation, Interaction

Simulation of reciprocating gas compressors with automatic reed valves

SIMULATION ◽  
1967 ◽  
Vol 8 (4) ◽  
pp. 209-214 ◽  
Author(s):  
M.W. Wambsganss ◽  
Donald Coates ◽  
Raymond Cohen
Keyword(s):  
Mathematical Model ◽  
Computer Simulation ◽  
Steady State ◽  
Dynamic Behavior ◽  
High Speed ◽  
Experimental Results ◽  
The Other ◽  
Reciprocating Compressor ◽  
Trial And Error ◽  
State Tests

The simulation of high-speed reciprocating refrigeration compressors was motivated by the needs of design engi neers. In this paper a mathematical model describing the dynamic behavior of a reciprocating compressor is pre sented. The model is semianalytic in that two types of empirical factors are required to relate phenomena not yet analytically predictable. One type is obtained from steady- state tests and the other by trial and error based on com parison with experimental results. Both analog and digital computers were considered as means of simulating the model. Due to nonlinearities in the model, the digital com puter, using Fortran IV, was selected. To evaluate the sim ulation, a one-quarter horsepower 3600-rpm stock com pressor was modified and used as a laboratory vehicle. A typical correlation between the computer simulation and experimental results is given. In general, good correlation was achieved.

Steady-State Operation Analysis for a Three-Winding Single-Phase Capacitor Motor

2015 ◽  
Vol 713-715 ◽  
pp. 1027-1030
Author(s):  
Jin Hui Zeng ◽  
Jian Guo Deng
Keyword(s):  
Mathematical Model ◽  
Steady State ◽  
Power Supply ◽  
Single Phase ◽  
Experimental Results ◽  
Calculation Formula ◽  
Voltage Unbalance ◽  
Operation Analysis ◽  
Steady State Operation ◽  
Simulation Results

The steady-state mathematical model of Smith-connection three-winding single-phase capacitor motor is established, and the capacitance calculation formula in minimum voltage unbalance condition is deduce .Based on this, by MATLAB simulated program, a operation simulation of Smith single phase capacitor motor that in single-phase 220V power supply and in single-phase 380V power supply is developed. The simulation results agree with the experimental results.

scholarly journals Some Remarks on Modelling and Simulation of Physical Phenomena

1997 ◽  
Vol 28 (3-4) ◽  
pp. 151-165 ◽  
Author(s):  
H. J. Bunge
Keyword(s):  
Mathematical Model ◽  
Computer Simulation ◽  
Mathematical Modelling ◽  
Modelling And Simulation ◽  
Theoretical Physics ◽  
Texture Formation ◽  
First Case ◽  
Non Linear ◽  
Non Linear Operator ◽  
Physical Phenomena

Mathematical modelling and computer simulation of physical phenomena is a rapidly growing field of work in all areas of pure and applied sciences. In principle, mathematical modelling of physical phenomena has been the field of theoretical physics from the very beginning of physics although the computer has increased the potentials of this method by many orders of magnitude. Modelling and simulation are often used as synonyms. It may, however, be meaningfull to distinguish the development of a mathematical model from its use in computer simulation. Also, a mathematical model in this sense must be distinguished from mathematical expressions interpolating experimental data. In the field of textures, models of texture formation, models of materials properties, as well as the combination of the two are being used. In this connection it is important whether a texture formation model is linear or non-linear. In the first case the texture formation operator can be reduced to the orientation space whereas a non-linear operator operates in the full texture space.

Study on Mechanics Properties of Shifting Impact of Overrunning AMT

2012 ◽  
Vol 252 ◽  
pp. 134-139
Author(s):  
Jian Jun Hao ◽  
Shuai Shuai Ge ◽  
Xi Hong Zou ◽  
Xiao Hui Ding
Keyword(s):  
Mathematical Model ◽  
Computer Simulation ◽  
Dynamic Model ◽  
Structural Characteristics ◽  
Transmission System ◽  
Separation Process ◽  
Force Analysis ◽  
Long Time ◽  
Simulation Results ◽  
The Mathematical Model

Aiming at the problem of long time power interruption and clutch master-slave friction plates wore seriously which greatly shorten the life of clutch during shifting process of AMT, a overrunning AMT without separation process of clutch when shifting is designed. This paper has analyzed structural characteristics and shift principle of overrunning AMT. Through force analysis on the jointing process of roller overrunning clutch, the mathematical model and dynamic model of transmission system are established. Finally, the shifting impact of shifting process is analyzed based on computer simulation. The simulation results indicate that vehicle longitudinal degree of jerk meets the requirement of vehicle comfort.

scholarly journals Modeling for Pyrolysis of Solid Biomass

2019 ◽  
Vol 64 (2) ◽  
pp. 192-204
Author(s):  
Biljana Miljkovic ◽  
Branislava Nikolovski ◽  
Dejan Mitrović ◽  
Jelena Janevski
Keyword(s):  
Heat Transfer ◽  
Mathematical Model ◽  
Weight Loss ◽  
Degradation Mechanism ◽  
Volatile Matter ◽  
Point Of View ◽  
Experimental Results ◽  
Pyrolysis Kinetics ◽  
Heating Rates ◽  
Simulation Results

In comparison to coal, biomass is characterized by a higher content of volatile matter. It is a renewable source of energy which has many advantages from an ecological point of view. Understanding the physical phenomena of pyrolysis and representing them with a mathematical model is the primary step in the design of pyrolysis reactors. In the present study, an existing mathematical model is used to describe the pyrolysis of a single solid particle of biomass. It couples the heat transfer equations with the chemical kinetics equations. A finite difference method is used for solving the heat transfer equation and the two-step pyrolysis kinetics equations. The model equation is solved for a slab particle of equivalent dimension 0.001 m and temperature ranging from 300 to 923 K. An original numerical model for the pyrolysis of wood chips is proposed and relevant equations solved using original program realized in MATLAB.To check the validity of the numerical results, experimental results of pyrolysis of woody biomass in laboratory facility was used. The samples were heated over a range of temperature from 300 to 923 K with three different heating rates of 21, 32 and 55 K/min, and the weight loss was measured. The simulation results as well as the results obtained from thermal decomposition process indicate that the temperature peaks at maximum weight loss rate change with the increase in heating rate. The experimental results showed that the simulation results are in good agreement and can be successfully used to understand the degradation mechanism of solid reaction.

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