Multirate Co-simulation of First Order Thermal Models in Electric Circuit Design

2004 ◽  
pp. 104-111
Author(s):  
A. Bartel ◽  
M. Günther
Keyword(s):  
Circuit Design ◽  
Electric Circuit ◽  
Thermal Models ◽  
First Order

pico-FCV: Small Single-Operator Electric-Vehicle Using 20 W Hydrogen Fuel Cell Developed for Mechatronics Education

2014 ◽  
Vol 26 (4) ◽  
pp. 515-517 ◽  
Author(s):  
Yoshihiko Takahashi ◽  
◽  
Masayuki Tomike ◽  
Takahiro Hirayama
Keyword(s):  
Fuel Cell ◽  
Electric Vehicle ◽  
Circuit Design ◽  
Mechanical Design ◽  
Electric Circuit ◽  
Practical Experience ◽  
Student Interest ◽  
Hydrogen Fuel Cell ◽  
Hydrogen Fuel ◽  
Single Operator

<div class=""abs_img""><img src=""[disp_template_path]/JRM/abst-image/00260004/15.jpg"" width=""300"" />pico-FCV: small fuel cell EV</span></div> A small, single-operator electric-vehicle using a 20 W hydrogen fuel cell, named pico-FCV, was developed for educational purposes. The design of the pico-FCV will promote student interest in environmental concerns. The project provides students with practical experience in mechatronics subjects such as mechanical design, electric circuit design, and programming. This paper will present the design and experimental results of the pico-FCV. The designed pico-FCV was able to run 2.7 km only using 5 l (0.5 g) hydrogen. </span>

scholarly journals On Modelling and Simulation of Electric Circuit Problems

2020 ◽  
Vol 3 (1) ◽  
pp. 24-29
Author(s):  
Hassan Adamu Alfaki ◽  
Muhammad Kabir Dauda ◽  
Ahmed Mohammed Gimba ◽  
Mohammed Abdullahi Ahmed
Keyword(s):  
Differential Equations ◽  
Electric Circuit ◽  
Physical Sciences ◽  
Electric Circuits ◽  
Order Linear ◽  
Linear Ordinary Differential Equations ◽  
First Order ◽  
Engineering Mathematics ◽  
Linear Differential ◽  
Physical Laws

Differential equations are of fundamental importance in Mathematics, Physical Sciences and Engineering Mathematics. Many mathematical relations and physical laws appeared in the form of such equations. This paper reviewed an application of these equations in solving mathematical model on electric circuit problems using the First order linear differential equation. The analytical approached in solving the equations confirmed that solving electric circuits using first order linear ordinary differential equations gives accurate and reliable result. Therefore, the application is of importance and great need. However, complex problems need higher order differential equations, which are nonlinear and have entirely different approach in finding their solutions.

scholarly journals Smart Core and Surface Temperature Estimation Techniques for Health-conscious Lithium-ion Battery Management Systems: A Model-to-Model Comparison

2021 ◽  
Author(s):  
Sumukh Surya ◽  
Akash Samanta ◽  
Sheldon Williamson
Keyword(s):  
Surface Temperature ◽  
Computational Cost ◽  
Lithium Ion ◽  
Second Order ◽  
Battery Management ◽  
Order Model ◽  
Temperature Estimation ◽  
Thermal Models ◽  
First Order ◽  
Estimation Scheme

Estimation of core and surface temperature is one of the crucial functionalities of the lithium-ion Battery Management System (BMS) towards providing effective thermal management, fault detection and operational safety. While, it is impractical to measure core temperature using physical sensors, implementing a complex estimation strategy in on-board low-cost BMS is challenging due to high computational cost and the cost of implementation. Typically, a temperature estimation scheme consists of a heat generation model and a heat transfer model. Several researchers have already proposed ranges of thermal models having different levels of accuracy and complexity. Broadly, there are first-order and second-order heat capacitor-resistor-based thermal models of lithium-ion batteries (LIBs) for core and surface temperature estimation. This paper deals with a detailed comparative study between these two models using extensive laboratory test data and simulation study to access suitability in online prediction and onboard BMS. The aim is to guide whether it’s worth investing towards developing a second-order model instead of a first-order model with respect to prediction accuracy considering modelling complexity, experiments required and the computational cost. Both the thermal models along with the parameter estimation scheme are modelled and simulated using MATLAB/Simulink environment. Models are validated using laboratory test data of a cylindrical 18650 LIB cell. Further, a Kalman Filter with appropriate process and measurement noise levels are used to estimate the core temperature in terms of measured surface and ambient temperatures. Results from the first-order model and second-order models are analyzed for comparison purposes.

The Design of New Automatic Loading Control System

2014 ◽  
Vol 496-500 ◽  
pp. 1531-1534
Author(s):  
Guo Bao Ding ◽  
Zhi Song Huo ◽  
Gui You Lu ◽  
Rui Zhu
Keyword(s):  
Neural Network ◽  
Control System ◽  
Incidence Rate ◽  
Circuit Design ◽  
Rough Set ◽  
Electric Circuit ◽  
Work Process ◽  
Way Of Thinking ◽  
And Control ◽  
Automatic Loading

Aim at work process complications, high break down incidence rate and break down diagnosis difficulty of current automatic loading control system, this text designed a set of new automatic loading control system which combined the advantage of the Rough Set - Neural Network to diagnose the automatic loading system.The system used LPC2294 as main control chip and additional other function units to complete hardware electric circuit design and software procedure exploit development of automatic loading system.The system made use of VS2008 to design the place of honor machine to show interface and passed the correspondence of a string of completion place of honor machine and control system, this system automatically packed to fill system to provide a new way of thinking at present for improvement.

Interactive graphics in structural analysis

1983 ◽  
Vol 10 (3) ◽  
pp. 396-407
Author(s):  
J. L. Humar
Keyword(s):  
Data Base ◽  
Circuit Design ◽  
Computer Aided Design ◽  
Electronic Circuit ◽  
Electric Circuit ◽  
Interactive Graphics ◽  
Computer Aided ◽  
Video Terminal ◽  
Aided Design ◽  
Electronic Circuit Design

Interactive computer graphics which implies a continuous exchange of information between the computer and the user has emerged as a very powerful tool in engineering applications. Computer-aided design (CAD) and computer-aided manufacturing (CAM) have found use in electronic circuit design, manufacturing, mapping, and architectural and engineering planning. Using CAD, a machine part, an electric circuit, or a building plan can be drawn and displayed on a video terminal. The product or plan can then be manipulated, rotated, viewed from different angles, or separated into segments. The graphic and attribute information related to the drawing is stored in a data base, and can be retrieved and modified at any time. At a more sophisticated level of CAD, the data base is used to generate input data for a finite element or another analysis program. This paper presents a brief survey of the CAD scene and the hardware and software available and describes the use of interactive graphics in generating data input for analysis.

Development of a Self-Power Peak Expiratory Flow Meter

2012 ◽  
Vol 241-244 ◽  
pp. 576-580 ◽  
Author(s):  
S. Wang ◽  
Z. Gaing ◽  
Ronald Garcia ◽  
Paul Chang ◽  
Chengren Chen
Keyword(s):  
Energy Source ◽  
Circuit Design ◽  
Strain Gauge ◽  
Electric Circuit ◽  
Digital Signal ◽  
The Self ◽  
Flow Data ◽  
Flow Meter ◽  
Respiratory Flow ◽  
Power Peak

For a regular Digital Peak Respiratory Flow Metter, a strain gauge or similar probe is used to detect the strength of the blowing. The signal is then be analyzed by computer. In this innovative Self-Power Peek Respiratory Flow Meter, however, a generator is used. The generator is “one stone for two birds”: it serves as the digital signal generator to present the air flow data; it also provides the energy source to re-power the batteries. This allows people to use the equipment whenever and anywhere without worry of recharge or change batteries. Another advantage of the machine is its reliability. The blowing chamber is separated from the generator by magnetic (shaft-less) coupling, therefore, the moisture from blowing has no way to corrode the electric circuit or contaminate the instrument. Because of this innovative instrument is “Green”, “Digital” and easy of use, the application would be expanded. The Coreless Permanent Magnet Disk Generator technology (AFPM) is utilized to eliminate the cogging torque. Moreover, energy saving circuit design also implemented to make the self-power instrument a reality.

scholarly journals First-Order Methods With Extended Stability Regions for Solving Electric Circuit Problems

2020 ◽  
pp. 242-252
Author(s):  
Mikhail V. Rybkov ◽  
Lyudmila V. Knaub ◽  
Danil V. Khorov
Keyword(s):  
Stability Region ◽  
Electric Circuit ◽  
Stability Control ◽  
Higher Order ◽  
Stiff Problems ◽  
Electrical Circuits ◽  
First Order ◽  
The Stability ◽  
First Order Methods ◽  
Shape And Size

Stability control of Runge-Kutta numerical schemes is studied to increase efficiency of in- tegrating stiff problems. The implementation of the algorithm to determine coefficients of stability polynomials with the use of the GMP library is presented. Shape and size of the stability region of a method can be preassigned using proposed algorithm. Sets of first-order methods with extended stability domains are built. The results of electrical circuits simulation show the increase of the efficiency of the constructed first-order methods in comparison with methods of higher order

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