Modeling and Simulation of the PMSM-Precision Reducer System with Modelica

There is still lack of effective modeling and simulation method for complex electromechanical coupling system. Modelica is a multi-domain unified modeling language to solve the modeling and simulation problems of the complex and heterogeneous physical systems. Dymola is a Modelica-based modeling and simulation platform for the complex physical systems. In this paper, the dynamics model of the permanent magnet synchronous motor (PMSM)-precision reducer system is established using Lagrange-Maxwell equation. The simulation model of this system is set up with Modelica language. The simulation of the system is realized in Dymola. Results show that the system can respond to good static and dynamic characteristics under a given speed for different loads. The dynamics model of the PMSM-precision reducer system can be further used in system control and optimization. The proposed modeling and simulation method based on Modelica may be commonly applied to other complex electromechanical systems.

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A Modeling and Simulation Method for SVPWM

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.548-549.815 ◽

2014 ◽

Vol 548-549 ◽

pp. 815-818

Author(s):

Jia Quan Lin ◽

Xu Yu Cheng ◽

Xin Mu

Keyword(s):

Modeling And Simulation ◽

Vector Function ◽

Simulation Method ◽

Working Time ◽

Time Model ◽

Basic Vector ◽

Wave Symmetry ◽

Simulation Results ◽

Set Up ◽

Working Time Model

The SVPWM technique plays an important role in the DC-AC transform. The modeling and simulation for SVPWM were proposed in this paper. The sector calculating model and basic vector working time model were set up. The effective vector function of time was set up. The triangle wave symmetry modulation was established too. The simulation results show that the model proposed in this paper is effective and has application value.

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Design of Control System for Hydraulically Vibrated Processing Tomato Fruit Seedling Separation Device

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.651-653.693 ◽

2014 ◽

Vol 651-653 ◽

pp. 693-696

Author(s):

Li Hong Wang ◽

Rong Qing Liang ◽

Cheng Song Li ◽

Za Kan ◽

Jin Wei Qin

Keyword(s):

Tomato Fruit ◽

Simulation Software ◽

Signal Frequency ◽

System Control ◽

Frequency Range ◽

Hydraulic Simulation ◽

Separation Device ◽

Processing Tomato ◽

Input Signal Frequency ◽

Set Up

Eccentric style processing tomato fruit seeding separation device exist high machining and assembly precision or other issues. In order to solve this problem, the mode of vibration of hydraulic replaced the eccentric style to drive the fruit seedling separation roller to separate processing tomato effectively. To facilitate adjustment of the hydraulic system, a kind of control circuit PLC as the core was designed according to the actual production requirements. PLC and other elements were selected. The system control signal frequency was initially set up as 1~5 HZ, within the frequency range hydraulic simulation software was used to simulate and analyze the hydraulic vibration system. The result shows that the system rams steady when the input signal frequency range was 1~5HZ.

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Design and High Accuracy Numerical Implementation of Fractional Order PI Controller for a PMSM Speed System

10.1115/detc2021-71115 ◽

2021 ◽

Author(s):

Baokun Wang ◽

Shaohua Wang ◽

Ying Luo

Keyword(s):

Fractional Order ◽

Permanent Magnet Synchronous Motor ◽

High Accuracy ◽

System Control ◽

Numerical Implementation ◽

Implementation Method ◽

Improved Performance ◽

Fractional Order Pi Controller ◽

Discretization Orders ◽

Fopi Controller

Abstract In this paper, a systematic design and high accuracy implementation of fractional order proportional integral (FOPI) controller is proposed for a permanent magnet synchronous motor (PMSM) speed system, and the numerical implementation performance of the fractional order operator is evaluated with comprehensive investigation using different implementation methods. Three commonly used numerical implementation methods of fractional operators are investigated and compared in this paper. Futhermore, for the impulse response invariant method, the effects of different discretization orders on the system control performance are compared. The simulation results show that the high accuracy numerical implementation method of the designed high-order FOPI controller has improved performance over normal accuracy fractional order operation implementation.

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An Efficient Transient Simulation Method for a Volume Dynamics Model

Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy ◽

10.1115/gt2018-75353 ◽

2018 ◽

Cited By ~ 1

Author(s):

Masahiro Kurosaki ◽

Minoru Sasamoto ◽

Kentaro Asaka ◽

Keiko Nakamura ◽

Daiki Kakiuchi

Keyword(s):

Integration Method ◽

Simulation Method ◽

Euler Method ◽

Test Model ◽

Dynamics Model ◽

Engine Operation ◽

Turbine Engine ◽

Engine Model ◽

Influence Coefficients ◽

Transient Simulations

This paper presents an efficient numerical integration method for a volume dynamics model in gas turbine engine transient simulations. It is a modified implicit Euler method that allows a time increment that would not be stable with the explicit Euler method. The Jacobian matrix of a nonlinear engine model is evaluated along the steady state engine operation line and scheduled as a function of the corrected shaft speed in advance, eliminating the necessity of computing during the simulation. The proposed method was applied to transient simulations of a compressor rig test model composed of a compressor, a nozzle with variable geometry and a volume placed between them. The eigenvalues of the simplified volume dynamics were analytically derived. It is shown that they are functions of the characteristic time of the volume defined by mass present in the volume divided by mass flow rate flowing into and out of the volume and dimensionless influence coefficients of nearby components.

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Robust H∞ Control of STMDs Used in Structural Systems by Hardware in the Loop Simulation Method

Actuators ◽

10.3390/act9030055 ◽

2020 ◽

Vol 9 (3) ◽

pp. 55

Author(s):

Huseyin Aggumus ◽

Rahmi Guclu

Keyword(s):

Natural Frequencies ◽

Experimental Studies ◽

Mr Damper ◽

Simulation Method ◽

Control Element ◽

Structural Systems ◽

Hardware In The Loop ◽

Building Model ◽

Mass Damper ◽

Set Up

This paper investigated the performance of a semi-active tuned mass damper (STMD) on a multi-degree of freedom (MDOF) building model. A magnetorheological (MR) damper was used as a control element that provided semi-activity in the STMD. The Hardware in the Loop Simulation (HILS) method was applied to mitigate the difficulty and expense of experimental studies, as well as to obtain more realistic results from numerical simulations. In the implementation of this method for the STMD, the MR damper was set up experimentally, other parts of the system were modeled as computer simulations, and studies were carried out by operating these two parts simultaneously. System performance was investigated by excitation with two different acceleration inputs produced from the natural frequencies of the MDOF building. Additionally, a robust H ∞ controller was designed to determine the voltage transmitted to the MR damper. The results showed that the HILS method could be applied successfully to STMDs used in structural systems, and robust H ∞ controls improve system responses with semi-active control applications. Moreover, the control performance of the MR damper develops with an increase in the mass of the STMD.

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Dynamic model of an air spring and integration into a vehicle dynamics model

Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering ◽

10.1243/09544070jauto867 ◽

2008 ◽

Vol 222 (10) ◽

pp. 1813-1825 ◽

Cited By ~ 12

Author(s):

F Chang ◽

Z-H Lu

Keyword(s):

Dynamic Model ◽

Vehicle Dynamics ◽

Simulation Method ◽

Heat Transfer Process ◽

Spring Model ◽

Dynamics Model ◽

Air Spring ◽

Full Vehicle ◽

Body Dynamics ◽

Multi Body

It is worthwhile to design a more accurate dynamic model for air springs, to investigate the dynamic behaviour of an air spring suspension, and to analyse and guide the design of vehicles with air spring suspensions. In this study, a dynamic model of air spring was established, considering the heat transfer process of the air springs. Two different types of air spring were tested, and the experimental results verified the effectiveness of the air spring model compared with the traditional model. The key factors affecting the computation accuracy were studied and checked by comparing the results of the experiments and simulations. The new dynamic model of the air spring was integrated into the full-vehicle multi-body dynamics model, in order to investigate the air suspension behaviour and vehicle dynamics characteristics. The co-simulation method using ADAMS and MATLAB/Simulink was applied to integration of the air spring model with the full-vehicle multi-body dynamics model.

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Heat Exchange Calculation of a Regenerative Air Heater with Numerical Simulation Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.860-863.1416 ◽

2013 ◽

Vol 860-863 ◽

pp. 1416-1419

Author(s):

Ri Guang Wei ◽

Zhen Xiao Qu ◽

Jian Qiang Gao

Keyword(s):

Numerical Simulation ◽

Simulation Method ◽

Calculation Model ◽

Design Parameters ◽

Practical Calculation ◽

Air Preheater ◽

Air Heater ◽

Pulverized Coal Boiler ◽

Set Up ◽

Coal Boiler

According to the structure and working principle of rotary air preheater,the heat transfer calculation model is set up with reasonable simplification. Combining with the design parameters of the rotary air preheater of a 400 t/h pulverized coal boiler unit ,the results of practical calculation show that the said thermodynamic calculation method not only has higher precision of calculation,but also can get the temperature distributions of the gas, air and heat surface in each cross-section of the rotary air preheater. The result of numerical simulation calculation tallies well with the original designed data. It can be used for the heat calculation both two-sectorial and three-sectorial air heater; it can be used for performance analysis of the regenerative air heater.

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Electro Hydraulic Control Harmonic Aging Stress Elimination Devices - Modeling and Simulation of the Shock Excitation Part

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.127.439 ◽

2011 ◽

Vol 127 ◽

pp. 439-443

Author(s):

Hui Wang ◽

Meng Li

Keyword(s):

Modeling And Simulation ◽

System Optimization ◽

Hydraulic Control ◽

Shock Excitation ◽

Main Research ◽

Interactive Environment ◽

Development Data ◽

Set Up ◽

High Level ◽

Dynamics Characteristic

The main research is the dynamics characteristic of the shock excitation part of electro hydraulic control harmonic aging stress elimination devices. Use the system dynamics knowledge to set up a dynamics model of the shock excitation part. Analyze the transfer function of system and then use MATLAB to draw graphics under the condition of different parameters. Through the simulation graphic's analysis, we can obtain the influence of various parameters on system model, so as to provide a reference for the system optimization. MATLAB is abbreviation of Matrix Laboratory, which is used for algorithm development, data visualization, data analysis and numerical calculation of high-level technical computing language and interactive environment. It is useful for us in modeling and simulation.

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