Reliability Analysis of Door Magnetic Switch under Different Permanent Magnetic Distribution

2012 ◽  
Vol 239-240 ◽  
pp. 328-331
Author(s):  
Xin Hua Yi ◽  
Xiao Min Cheng ◽  
Min Jun Wang
Keyword(s):  
Mathematical Model ◽  
Permanent Magnet ◽  
Reliability Analysis ◽  
Permanent Magnets ◽  
Simulation Method ◽  
Ansys Software ◽  
Reed Switch ◽  
Magnetic Switch ◽  
Magnetic Adsorption ◽  
Simulation Results

In order to improve the reliability and safety of door magnetic switch, a mathematical model of three reed switches was designed to satisfy this requirement under different permanent magnetic distribution. To obtain the same magnetic adsorption force for the magnetic reed switch, this paper uses a simulation method based on ANSYS software to mainly analyze the different distribution of three permanent magnets how to affect the adsorption force of door magnetic switch. The simulation results demonstrate that the adsorption force is different for different layout of permanent magnet and help to obtain the installing position of the reed switch and to improve the reliability.

Permanent Magnet Biased Bearing of Suspension System

2011 ◽  
Vol 383-390 ◽  
pp. 5529-5535
Author(s):  
Ming Zong ◽  
Xiao Kang Wang ◽  
Yang Cao
Keyword(s):  
Magnetic Field ◽  
Mathematical Model ◽  
Permanent Magnet ◽  
Power Amplifier ◽  
Model Simulation ◽  
Simulation Method ◽  
Magnetic Bearing ◽  
Magnetic Bearings ◽  
Active Magnetic Bearing ◽  
Simulation Results

PM (Permanent Magnet) biased magnetic bearing with PM to replace the magnetic field produced by electromagnet an Active Magnetic Bearing generated static bias magnetic field, it can reduce the power consumption of power amplifier to reduce the number of turns of magnet safety, reduce the volume of magnetic bearings, reducing electromagnetic coil operating current, thereby reducing the power amplifier power control system and heat sink size, magnetic bearings significantly reduce power loss, and fundamentally reduce the cost of bearing. In this paper, a kind of PM biased magnetic bearings, describes its structure and working principle, derived a mathematical model of magnetic bearing and magnetic circuit of PM biased magnetic bearings are calculated, given the specific PM biased magnetic bearing size and accordingly calculate the parameters of magnetic bearings. A magnetic model constructed using Simulink simulation method, and constructed using this method, magnetic bearing specific mathematical model simulation results show that the rotor position in the balance, X and Y decoupling between the control winding, while the deviation from equilibrium position time, X and Y control coupling between the windings, the simulation results and the calculation results.

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.

Research on Control System of Gearless Permanent Magnet Synchronous Traction Elevator

2011 ◽  
Vol 383-390 ◽  
pp. 5945-5950
Author(s):  
Yan Hu ◽  
Zhen Guang ◽  
Xiao Yu Wang
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Permanent Magnet ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Control Method ◽  
Modulation Method ◽  
Driving System ◽  
Simulation Results ◽  
The Mathematical Model

A driving system for gearless traction machine plays an very important role in controlling elevator’s running. And its performances have a direct effect on the elevator’s performance. On the basic of the mathematical model of the gearless permanent magnetic synchronous machine (PMSM), id=0 vector control method and space vector pulse width modulation method are used in the control system. Then making a simulation on the system designed by MATLAB/SIMULINK. The simulation results show that the control method is feasible.

A Hydraulic Analogue Model and Analysis of a Micropump Considering the Diaphragm Stiffness

2008 ◽  
Vol 392-394 ◽  
pp. 116-120
Author(s):  
Dan Jiang ◽  
Song Jing Li ◽  
Gang Bao
Keyword(s):  
Mathematical Model ◽  
Finite Element Analysis ◽  
Dynamic Characteristics ◽  
Simulation Method ◽  
Element Analysis ◽  
Analogue Model ◽  
Frequency Calculation ◽  
Simulation Results ◽  
Natural Frequency Calculation ◽  
The Mathematical Model

In order to predict the dynamic characteristics, the piezoelectric valve-less diffuser micropump is equivalent to the hydraulic model which consists of several hydraulic components. Using finite element analysis (FEA) method, the static analysis and the natural frequency calculation of the diaphragm are carried out. The mathematical model and the simulation method using AMESim are developed. Simulation results show the pressure and flow rate characteristics of the micropump, as well as the diaphragm stiffness influence. The agreement between the simulation results and those published previously indicates that the method combining FEA with the hydraulic analogue model provides a relatively simple and effective tool to study the dynamic characteristics of micropumps.

scholarly journals The Effect of Magnet Structure on the Cogging Torque Reduction in a Permanent Magnet Generator

2021 ◽  
Vol 56 (1) ◽  
Author(s):  
Tajuddin Nur ◽  
Yudha Suherman ◽  
Herlina
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnets ◽  
Magnetic Surface ◽  
Electric Machines ◽  
Magnetic Method ◽  
Cogging Torque ◽  
The Core ◽  
Initial Design ◽  
Simulation Results ◽  
Peak Value

The cogging torque would still be a constant part of permanent magnet-electric machines. This happens because of the construction in which permanent magnets are attached to the rotor, and a slot is present at the core of the stator. The contact between the two, related to the distance between the magnetic surface and the stator slot, makes it challenging to eliminate the cogging torque. This study aims to maximize cogging torque by reducing it with a new method. The proposed method is a mixture of two techniques that indicate significant promise. This invention mixes two techniques to improve the final results. The first process is called magnetic edge shaping, and the second technique is called a dummy slot on the stator. A fractional slot number (FSN) type with 24 slots and 18 poles is the permanent magnet machine used for this investigation. This work is assisted by software version 4.2 of the Finite Element Magnetic Method (FEMM), which will simulate the original and the proposed design. The proposed method proved to be effective in minimizing the peak value of the cogging torque, as shown by the simulation results of 98% of the initial design. Combining the two techniques may reduce the tangential value of the flux so that the flux leading to the slot is lower than the initial design.

scholarly journals Desain dan Simulasi GMP Fluks Aksial Berbasis Dimensi Magnet Permanen Komersil

2020 ◽  
Vol 8 (3) ◽  
pp. 602
Author(s):  
PUDJI IRASARI ◽  
PUJI WIDIYANTO ◽  
MUHAMMAD FATHUL HIKMAWAN
Keyword(s):  
Permanent Magnet ◽  
Output Power ◽  
Permanent Magnets ◽  
High Efficiency ◽  
Voltage Drop ◽  
Design Calculation ◽  
Axial Flux ◽  
Terminal Voltage ◽  
Permanent Magnet Generators ◽  
Simulation Results

ABSTRAKMakalah ini membahas desain dan simulasi generator magnet permanen fluks aksial 500 W, 220 V, 500 rpm, 1 fasa, stator tunggal tanpa inti besi lunak dan rotor ganda berbahan baja karbon. Tujuan studi adalah untuk mengetahui performa generator pada dua jenis pembebanan yaitu beban RL dan ZL. Metode perhitungan desain dilakukan secara analitik dan numerik menggunakan perangkat lunak FEMM 4.2 dengan berbasis pada dimensi magnet permanen komersil. Performa generator yang dianalisis meliputi tegangan terminal, daya keluaran dan efisiensi. Hasil simulasi menunjukkan bahwa ketika diberi beban RL, daya keluaran dan efisiensi generator lebih tinggi dibanding ketika diberi beban ZL. Grafik tegangan terminal dari kedua jenis pembebanan tersebut sebagian berimpit tetapi pada beban RL tingkat penurunannya lebih tajam disebabkan tegangan jatuhnya lebih besar. Dari semua hasil perhitungan dan simulasi, dapat disimpulkan bahwa generator menunjukkan performa yang baik pada kedua jenis pembebanan dengan efisiensi sekitar 80%.Kata kunci: generator, magnet permanen, fluks aksial, stator tunggal, rotor ganda ABSTRACTThis paper discusses the design and simulation of 500 W, 220 V, 500 rpm axial flux permanent magnet generators, with the construction of coreless, single stator, and double rotor made of carbon steel. This study aims to find out the performance of the generators in two types of loadings, namely RL and ZL loads. The design calculation method is done analytically and numerically using FEMM 4.2 software based on the dimensions of commercial permanent magnets. The generator performances analyzed include the terminal voltage, the output power, and the efficiency. From the simulation results, it is known that under load RL, the output power and efficiency are higher than under load ZL. The terminal voltage graphs of the two types of loadings partially coincide but at the RL load, the rate of the decline is sharper due to the greater voltage drop. From all the results, it can be concluded that the generator shows good performance on both types of loads with a quite high efficiency, which is around 80%.Keywords: generator, permanent magnet, axial flux, single stator, double rotor

JOURNAL BEARING WITH VARIABLE DYNAMIC CHARACTERISTICS: SIMULATION RESULTS AND VERIFICATION

2021 ◽  
Vol 2 ◽  
pp. 140-145
Author(s):  
A.S. FETISOV ◽  
A.V. KORNAEV
Keyword(s):  
Fluid Dynamics ◽  
Mathematical Model ◽  
Software Package ◽  
Computational Experiment ◽  
Journal Bearing ◽  
Dynamic Parameters ◽  
Plain Bearing ◽  
Ansys Software ◽  
Simulation Results ◽  
The Mathematical Model

The article presents the results of a computational experiment on modeling a smooth plain bearing with a controlled axial supply of lubricant. The basic relations of the mathematical model, boundary conditions and parameters of modeling the fluid flow in the gap region of the sliding support are presented. The description of the calculation of the sliding support in the Ansys software package is given. The results of modeling and the results of calculating the static and dynamic parameters of the simulated bearing are presented. Conclusions are drawn on the applicability of computational fluid dynamics programs for calculating sliding supports

Force Ripple Suppression Research for Linear Motor Servo System Based on BP Neural Network

2014 ◽  
Vol 654 ◽  
pp. 191-195
Author(s):  
Rui Peng ◽  
Yue Nan Zeng ◽  
Jian Tang ◽  
Kang Ping Chen
Keyword(s):  
Neural Network ◽  
Mathematical Model ◽  
Theoretical Analysis ◽  
Permanent Magnet ◽  
Bp Neural Network ◽  
Detent Force ◽  
Simulation Results ◽  
Force Ripple ◽  
The Mathematical Model ◽  
Suppression Strategy

For the permanent magnet synchronous linear motor’s (PMSLM) force ripple, the mathematical model of detent force is established in this paper, and presents a suppression strategy based on neural network. By the designing of BP neural network force ripple observer, theoretical analysis shows can effectively restrain the force ripple. Simulation results show the correctness and validity of the suppression strategy.

Research on Dynamic Balance Method of Precision Centrifuge

2014 ◽  
Vol 945-949 ◽  
pp. 777-780
Author(s):  
Tao Liu ◽  
Yong Xu ◽  
Bo Yuan Mao
Keyword(s):  
Mathematical Model ◽  
Balance Control ◽  
Dynamic Balance ◽  
Dynamic Balancing ◽  
Structure Characteristics ◽  
Balance System ◽  
Simulation Results ◽  
Set Up ◽  
System Controller ◽  
The Mathematical Model

Firstly, according to the structure characteristics of precision centrifuge, the mathematical model of its dynamic balancing system was set up, and the dynamic balancing scheme of double test surfaces, double emendation surfaces were established. Then the dynamic balance system controller of precision centrifuge was designed. Simulation results show that the controller designed can completely meet the requirements of precision centrifuge dynamic balance control system.

scholarly journals Simulation and Nonlinearity Optimization of a High-Pressure Sensor

Sensors ◽  
2020 ◽  
Vol 20 (16) ◽  
pp. 4419
Author(s):  
Ting Li ◽  
Haiping Shang ◽  
Weibing Wang
Keyword(s):  
High Pressure ◽  
Pressure Sensor ◽  
Pressure Sensors ◽  
Original Model ◽  
Ansys Software ◽  
Nonlinear Error ◽  
Sensor Model ◽  
Optimized Model ◽  
Simulation Results ◽  
Better Than

A pressure sensor in the range of 0–120 MPa with a square diaphragm was designed and fabricated, which was isolated by the oil-filled package. The nonlinearity of the device without circuit compensation is better than 0.4%, and the accuracy is 0.43%. This sensor model was simulated by ANSYS software. Based on this model, we simulated the output voltage and nonlinearity when piezoresistors locations change. The simulation results showed that as the stress of the longitudinal resistor (RL) was increased compared to the transverse resistor (RT), the nonlinear error of the pressure sensor would first decrease to about 0 and then increase. The theoretical calculation and mathematical fitting were given to this phenomenon. Based on this discovery, a method for optimizing the nonlinearity of high-pressure sensors while ensuring the maximum sensitivity was proposed. In the simulation, the output of the optimized model had a significant improvement over the original model, and the nonlinear error significantly decreased from 0.106% to 0.0000713%.

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