A New Type of IGBT Device with Electronic Enhance Collector

2014 ◽  
Vol 644-650 ◽  
pp. 3844-3849
Author(s):  
Yu Shu Lai ◽  
Yan Xiong ◽  
Sheng Rong Zhong ◽  
Jian Xiong
Keyword(s):  
Simulation Analysis ◽  
Structural Parameters ◽  
Substrate Structure ◽  
New Type ◽  
Working Principle ◽  
Groove Structure ◽  
Simulation Results

A new type of substrate structure Electronic Enhance Collector IGBT (EEC-IGBT) was proposed, and the working principle was introduced in this paper. Compared with conventional IGBT, the substrate of EEC-IGBT was divided by the groove structure composed of oxide and aluminum. Finally, simulation analysis about the EEC-IGBT performance influence by structural parameters was given. The simulation results showed that the turn-off loss of EEC-IGBT was reduced 30% compared with CS-IGBT in the same condition voltage.

Simulation Analysis of the Counterbalance Valve Used in Cranes Based on AMESim Software

2012 ◽  
Vol 233 ◽  
pp. 55-61 ◽  
Author(s):  
Xu Ji ◽  
Xin Hui Liu
Keyword(s):  
Dynamic Response ◽  
Simulation Analysis ◽  
Structural Parameters ◽  
Working Principle ◽  
Response Performance ◽  
Simulation Results

This paper presents the structure and working principle of counterbalance valve used in some hydraulic cranes. Based on the AMESim software, the model of the counterbalance valve is build, and the simulation analysis for its performances is done. The simulation results show that the valve has a good dynamic response performance and stability, its control spool opening is independent of the load, and the main concerned structural parameters can affect the performance of the counterbalance valve.

A New Design of a Piezoelectric Triaxial Micro-Accelerometer

2015 ◽  
Vol 645-646 ◽  
pp. 841-846 ◽  
Author(s):  
Jian Yan Wang ◽  
Ting Ting Wang ◽  
Hang Guo
Keyword(s):  
Simulation Analysis ◽  
Structural Parameters ◽  
Sol Gel ◽  
Triaxial Accelerometer ◽  
Response Frequency ◽  
Pzt Films ◽  
New Type ◽  
The Cross ◽  
Cross Axis ◽  
Micro Accelerometer

Accelerometer in MEMS always is made by capacitive or piezoresistive, whose dynamic response is not good, the operating frequency is narrow, and the cross-axis sensitivity is low. A new type of piezoelectric micro-accelerometer is designed, and its structure is “x” type. The sensing unit is piezoelectric PZT films, which is achieved by sol-gel method. The accelerometer is a triaxial accelerometer. The theoretical and simulation analysis is used to achieve the charge sensitivity and response frequency, and also get the optimal structural parameters. A new circuit connection is proposed to improve the sensitivity and avoid the cross-axis sensitivity. The design achieves the z-axis sensitivity with more than 40 pC/g, x, y-axis sensitivity with more than 8pC/g, and the response frequency is about 3000Hz.

Simulation Analysis of Walking and Climbing Robot Based on ADAMS

2013 ◽  
Vol 721 ◽  
pp. 433-436
Author(s):  
Dong Mei Liu ◽  
Hang Xu Yang
Keyword(s):  
Simulation Analysis ◽  
Robot Motion ◽  
Mechanical Equipment ◽  
Mountainous Area ◽  
Climbing Robot ◽  
Complex Environment ◽  
Motion Process ◽  
New Type ◽  
Simulation Results ◽  
Working Efficiency

At present, it is mostly the wheel or caterpillar of large mechanical equipment to finish the transportation operation in the mountainous area and forest complex environment. These large machines have some shortcomings, such as power consumption, poor mobility, low working efficiency and their own shortcoming of balance and the barrier and grade ability. In order to solve the above problems, this paper designed a new type of walking climbing robot and built virtual prototype of the robot by using PRO/E, did simulation of the robot motion process and the simulation results verified the feasibility of the design.

Optimal Design of a New Type of Savonius Rotor Using Simulation Analysis

2012 ◽  
Vol 499 ◽  
pp. 120-125 ◽  
Author(s):  
Zhi Peng Tang ◽  
Ying Xue Yao ◽  
Liang Zhou ◽  
Q. Yao
Keyword(s):  
Fluid Dynamics ◽  
Numerical Simulation ◽  
Computational Fluid Dynamics ◽  
Optimal Design ◽  
Simulation Analysis ◽  
Structural Parameters ◽  
Sliding Mesh ◽  
Savonius Rotor ◽  
Mesh Method ◽  
New Type

In order to enhance the efficiency of the Savonius rotor, this paper designs a new type of Savonius rotor with a rectifier. By using Computational Fluid Dynamics software to simulate and optimize the various parameters which affect the efficiency of the rotor. The sliding mesh method is applied here. The Cp-λ curves of wind turbine with different structural parameters are obtained after numerical simulation of flow field. On this basis, this paper gets the optimal structural parameters. And the results indicated that this new type of Savonius rotor has great improvement of efficiency compared with the traditional Savonius-type rotor.

Analysis and Simulation Evaluation of a Novel Metallic-Disc Flexible Coupling

2012 ◽  
Vol 189 ◽  
pp. 295-299
Author(s):  
Xu Guang Min ◽  
Guo Liang Hu
Keyword(s):  
Simulation Analysis ◽  
Diesel Generator ◽  
Ansys Software ◽  
Flexible Coupling ◽  
Simulation Evaluation ◽  
Centre Line ◽  
Offset Distance ◽  
New Type ◽  
Working Principle ◽  
Rotor Axis

In additional to transfer the torque safely, the coupling of the diesel generator set should also has the function of compensating the relative offset distance between the centre line of the diesel crank shaft and the centre line of the generator rotor axis. In this paper, a new type of metallic-disc flexible coupling for diesel generator set of 500kW power was designed. The working principle of the metallic-disc flexible coupling was expounded in detail, and the comprehensive force performances of the metallic-disc were also analyzed. The simulation analysis was carried out to determine the optimal numbers and thickness of the metallic-disc using ANSYS software. So, the needed torque and the coaxiality between the two axes can be guaranteed. The relevant results can provide some guidance for the improvement design of domestic diesel generator set.

New-Type Energy-Recovering Hydraulic Workover Rig and the Simulation for Lifting the Tubing String

2008 ◽  
Vol 130 (3) ◽  
Author(s):  
Zhang Lujun ◽  
Xie Hengshu
Keyword(s):  
Potential Energy ◽  
Simulation Analysis ◽  
Basic Structure ◽  
Dynamics Model ◽  
Actual Measurement ◽  
Model And Simulation ◽  
Measurement Results ◽  
Tubing String ◽  
New Type ◽  
Simulation Results

A new-type energy-recovering hydraulic workover rig is researched. The basic structure and working theory of this rig are introduced. This rig decreases its equipped power remarkably compared with the conventional rig, and can recover the potential energy released by the tubing string when lowered. With infinite force-grade number, this rig can obtain the maximum lifting efficiency and energy-recovering rate. The dynamics model of lifting the tubing string is deduced and a simulation analysis is conducted. Through simulation some conclusions are obtained: (1) the greater the throttle valve path area the higher the tubing string lifting velocity, (2) the lighter the tubing string the higher the tubing string lifting velocity, and (3) the greater the displacement of the variable pump motor the higher the tubing string lifting velocity. The actual measurement results prove that the dynamics model and simulation results are basically right.

Design and Analysis of a Linear Ultrasonic Motor with Composite Bending and Torsional Vibration Modes

2014 ◽  
Vol 945-949 ◽  
pp. 1327-1332 ◽  
Author(s):  
He Long Wang ◽  
Wei Shan Chen ◽  
Jun Kao Liu
Keyword(s):  
Torsional Vibration ◽  
Transient Analysis ◽  
Structural Parameters ◽  
Ultrasonic Motor ◽  
Vibration Modes ◽  
Bending Vibration ◽  
First Order ◽  
Linear Ultrasonic Motor ◽  
New Type ◽  
Working Principle

A new type linear ultrasonic motor using Second-order bending and First-order torsional modes (2B-1T) is proposed. The ultrasonic motor has two driving feet and the continuous linear motions of sliders are realized by the frictional force between stator and sliders. In this new design, bending vibration is excited by d33 mode, which controls the preload pressure, and torsional vibration is excited by d15 mode, which generates the driving force. The elliptical trajectories of both feet are achieved, when the phase difference of the two modes is 90° in time and space. The working principle of ultrasonic motor using 2B-1T is simulated. A parametric model of the stator is designed. The sensitive analyses of structural parameters are gained with modal analysis. The characteristics and trajectories of driver feet are studied by transient analysis. These results can provide theoretical basis for the development of this new type ultrasonic motor.

Structure Design and Finite Element Analysis of a New Type Metallic-Disc Flexible Coupling for Diesel Generator Set

2012 ◽  
Vol 562-564 ◽  
pp. 680-683
Author(s):  
Xu Guang Min ◽  
Guo Liang Hu
Keyword(s):  
Simulation Analysis ◽  
Structure Design ◽  
Diesel Generator ◽  
Ansys Software ◽  
Theory Analysis ◽  
Element Analysis ◽  
Flexible Coupling ◽  
New Type ◽  
Working Principle ◽  
Rubber Component

Aiming at the shortcomings of fixed coupling and flexible coupling with rubber component used in the diesel generator set, a new type of metallic-disc flexible coupling for diesel generator set of 500kW power was designed. The working principle and theory analysis of the metallic-disc flexible coupling were expounded in detail. The simulation analysis was carried out to determine the optimal numbers and thickness of the metallic-disc using ANSYS software. The relevant results can provide some guidance for the improvement design of domestic diesel generator set.

scholarly journals Design and Simulation of Electro-hydraulic Control Valve Based on AMESim

2021 ◽  
Vol 2137 (1) ◽  
pp. 012006
Author(s):  
Bin Li ◽  
Guyang Li ◽  
Wangyang Wu ◽  
Xue Zhang ◽  
Song Guo ◽  
...  
Keyword(s):  
Simulation Analysis ◽  
Control Valve ◽  
Response Speed ◽  
Model Parameters ◽  
Hydraulic Control ◽  
Pressure Area ◽  
Working Principle ◽  
Simulation Results

Abstract In this paper, the electro-hydraulic control valve commonly used in ships is taken as the research object, the working principle of the valve is introduced, the model of the valve is established by AMESim software, the model parameters are set and the simulation analysis is carried out. By changing the relevant parameters of the valve, the response speed of the valve can be improved. The simulation results show that the pressure area of load sensitive cavity and the diameter of damping hole have obvious influence on the response speed of valve.

Magnetic Circuit Optimization Design and Simulation Analysis of Electromagnetic Inertial Actuator

2014 ◽  
Vol 940 ◽  
pp. 356-361
Author(s):  
Hai Long Cao ◽  
Zheng Tao Yan ◽  
Jing Jun Lou
Keyword(s):  
Optimization Design ◽  
Magnetic Circuit ◽  
Simulation Analysis ◽  
Active Vibration Control ◽  
Optimal Solution ◽  
Structure Design ◽  
Circuit Optimization ◽  
New Type ◽  
Active Vibration ◽  
Working Principle

This paper introduces basic working principle of electromagnetic inertial actuators and establishes the mechanical model of actuator. With the method of three-level series permanent magnet, the actuator structure design was completed. According to the structure of the actuator, the magnetic circuit model of actuator was determined, and the design of magnetic circuit was completed. Through the comparison and analysis, the type of both ends of the cage was determined. The simulation analysis of actuators’ magnetic field was studied by using ANSYS, and then the parameters were optimized. The parameters of the optimal solution are concluded, and a way to the actuator parameters is found. This provides a theoretical basis for the production, development of the actuator, and provides a train of thought for the design of the new type of actuators in active vibration control.

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