Real-Time Multi-Body Software for HIL Simulations

2010 ◽  
Author(s):  
Paolo Righettini ◽  
Alberto Oldani
Keyword(s):  
Mathematical Model ◽  
Embedded Systems ◽  
Design Process ◽  
Hardware In The Loop ◽  
Real Behavior ◽  
Hardware Component ◽  
General Mathematical Model ◽  
The Subject ◽  
Complex Mechanical Systems ◽  
Multi Body

The Hardware in the Loop simulation is an useful instrument to simulate complex mechanical systems in which the subject of the test is an hardware component. The results of the simulation, closer to the real behavior of the system, are the main advantage of this approach. This application is often used during the design process to test components of a complex mechanical system before the development of the prototype (e.g. embedded systems). The literature examples show, in general, mathematical model finalized to the application. The objective of this work is focused on the development of a generic Multi-Body software for HIL applications. Some simulations examples, the dynamic of a slider-crank and of a McPherson suspension, are presented at the end of the paper.

scholarly journals General mathematical model of the roadmap fight against cartels

2019 ◽  
pp. 36-41
Author(s):  
Yu. G. Vasin ◽  
T. Yu. Rudaya
Keyword(s):  
Mathematical Model ◽  
Probabilistic Models ◽  
Proposed Model ◽  
The Social ◽  
General Mathematical Model ◽  
Road Maps ◽  
The Subject ◽  
State Programs ◽  
Constituent Elements ◽  
Forecast Function

The article offers a description of the general algorithm for the formation of a mathematical (stochastic) model of countering cartels as a massive negative social and legal phenomenon. The specified model allows to realize (calculate) the forecast function is a necessary element of state programs (“road maps”) to counter illegal manifestations. The formation of a mathematical model should be preceded by a stage of theoretical modeling, which establishes the constituent elements and relationships of the subject of study. It is proved that the prognostic model of the social-legal phenomenon should be based on the provisions of probability theory. A specific technique is proposed for calculating a system of stochastic indicators (mathematical expectation and standard deviation) of the corresponding model on a single methodological basis. Proposals were made for forecasting methods in relation to quantitative probabilistic models of fighting cartels. The importance of the constant (periodic) verification of the initial statistical data and the correct interpretation of the results of prediction calculations is substantiated. The directions of the practical use of the proposed model for the creation of a comparative monitoring system for the cartelization of the EAEU product markets are proposed.

The Generation Principle and Mathematical Models of Double-Enveloping Internal Gear Pairs

2015 ◽  
Author(s):  
Xuan Li ◽  
Bingkui Chen ◽  
Yawen Wang ◽  
Guohua Sun ◽  
Teik C. Lim
Keyword(s):  
Mathematical Model ◽  
Load Capacity ◽  
Geometrical Shape ◽  
Gear Pair ◽  
Numerical Examples ◽  
Proposed Model ◽  
General Mathematical Model ◽  
Meshing Characteristics ◽  
Internal Gear ◽  
Tooth Pair

In this paper, the planar double-enveloping method is presented for the generation of tooth profiles of the internal gear pair for various applications, such as gerotors and gear reducers. The main characteristic of this method is the existence of double contact between one tooth pair such that the sealing property, the load capacity and the transmission precision can be significantly improved as compared to the conventional configuration by the single-enveloping theory. Firstly, the generation principle of the planar double-enveloping method is introduced. Based on the coordinate transformation and the envelope theory, the general mathematical model of the double-enveloping internal gear pair is presented. By using this model, users can directly design different geometrical shape profiles to obtain a double-enveloping internal gear pair with better meshing characteristics. Secondly, to validate the effectiveness of the proposed model, specific mathematical formulations of three double-enveloping internal gear pairs which apply circular, parabolic and elliptical curves as the generating curves are given. The equations of tooth profiles and meshing are derived and the composition of tooth profiles is analyzed. Finally, numerical examples are provided for an illustration.

The New Measurement and Calculation Method for Dynamic Parameters of DC Motor Based on dSPACE System

2012 ◽  
Vol 562-564 ◽  
pp. 1496-1500
Author(s):  
Qiang Li ◽  
Wei Chen ◽  
Ren He
Keyword(s):  
Mathematical Model ◽  
Duty Cycle ◽  
Calculation Method ◽  
Dc Motor ◽  
Control Algorithms ◽  
Dynamic Parameters ◽  
Hardware In The Loop ◽  
Test Results ◽  
Complex Control ◽  
Measurement And Calculation Method

To investigate the accuracy of modeling DC motor, the platform for measurement and calculation dynamic parameters is built by the Hardware-In-the-Loop(HIL) method based on dSPACE system. The running state of DC motor has to be changed with adjustment of PWM duty-cycle using ControlDesk software. Having got measurement and calculation parameters value of DC motor, we compare the test results with simulation value using the model of DC motor with cascade control in Matlab/Simulink software according to the classical mathematical model. It confirms the established model of DC motor accurately and reliability using new parameters, which provides the basis of more complex control algorithms and also indicates that the feasibility and generalization application value of measurement and calculation method for DC motor.

scholarly journals SHIL and DHIL Simulations of Nonlinear Control Methods Applied for Power Converters Using Embedded Systems

Electronics ◽  
2018 ◽  
Vol 7 (10) ◽  
pp. 241 ◽  
Author(s):  
Arthur Rosa ◽  
Matheus Silva ◽  
Marcos Campos ◽  
Renato Santana ◽  
Welbert Rodrigues ◽  
...  
Keyword(s):  
Embedded Systems ◽  
Nonlinear Control ◽  
Real Time ◽  
Digital Signal Processor ◽  
High Performance ◽  
Power Converters ◽  
Digital Signal ◽  
Simulation Method ◽  
Hardware In The Loop ◽  
Control Techniques

In this work, a new real-time Simulation method is designed for nonlinear control techniques applied to power converters. We propose two different implementations: in the first one (Single Hardware in The Loop: SHIL), both model and control laws are inserted in the same Digital Signal Processor (DSP), and in the second approach (Double Hardware in The Loop: DHIL), the equations are loaded in different embedded systems. With this methodology, linear and nonlinear control techniques can be designed and compared in a quick and cheap real-time realization of the proposed systems, ideal for both students and engineers who are interested in learning and validating converters performance. The methodology can be applied to buck, boost, buck-boost, flyback, SEPIC and 3-phase AC-DC boost converters showing that the new and high performance embedded systems can evaluate distinct nonlinear controllers. The approach is done using matlab-simulink over commodity Texas Instruments Digital Signal Processors (TI-DSPs). The main purpose is to demonstrate the feasibility of proposed real-time implementations without using expensive HIL systems such as Opal-RT and Typhoon-HL.

scholarly journals Making Things Right: New Zealand industrial design pioneer Peter Haythornthwaite, the quest for beauty and putting the user first

2021 ◽  
pp. 53-67
Author(s):  
Michael Barrett
Keyword(s):  
New Zealand ◽  
Design Process ◽  
Industrial Design ◽  
Small Contribution ◽  
Book Design ◽  
Design Generation ◽  
The Subject

In 2018, interviewing Peter Haythornthwaite for a small contribution to the book, ‘Design Generation’1 (by Michael Smythe; published in support of an Objectspace exhibition of the industrial designer’s work), the designer ventured on to the subject of beauty and its importance to his design process. It seems fitting to start here with that idea, because while beauty’s role in design is little discussed today, Haythornthwaite saw how objects of beauty make everyday use a delight.

scholarly journals Standardization and integration of the airport master plan design process

2018 ◽  
Vol 2018 (12) ◽  
pp. 77-86
Author(s):  
Michał Kozłowski
Keyword(s):  
Design Process ◽  
Dynamic Process ◽  
Practical Experience ◽  
Master Plan ◽  
Airport Management ◽  
Quality Of Results ◽  
The Subject ◽  
Effectiveness And Efficiency ◽  
Standard Documents

The article presents the conclusion of the practical experience as well as the results of the author's research in the field of airport management, formulated in the context of the implementation of the investment of the Central Polish Airport. The subject of the considerations and implications is the process of designing the Airport Master Plan – AMP, which in the current situation should be modified in order to ensure effectiveness and efficiency of implementation and quality of results. At the beginning, AMP was characterized on the basis of a study concerning legal acts and selected standard documents, and a study of the quality and risk issues of the AMP was carried out. On the basis of the results obtained, conclusions have been formulated regarding the need for standardization and integration of the dynamic process of AMP design.

scholarly journals DETERMINING THE FORCES OF INTERACTION OF MAIN GEOKHODS SYSTEMS WITH GEO-ENVIRONMENT AND WITH EACH OTHER

2018 ◽  
pp. 23-30
Author(s):  
V. Yu. Beglyakov ◽  
V. V. Aksenov ◽  
I. K. Kostinets ◽  
A. A. Khoreshok
Keyword(s):  
Mathematical Modeling ◽  
Mathematical Model ◽  
Interaction Process ◽  
Generalized Model ◽  
Machine Elements ◽  
General Mathematical Model ◽  
Mine Workings ◽  
Modular Principles ◽  
Sufficient Strength

The processes occurring during the geodetic excavation of underground excavations are characterized by the interaction of the elements of the geokhod with each other and with the geo-environment. The interaction process can be investigated in mathematical modeling, solving the problems of justifying the parameters of the drives and interacting forces, ensuring sufficient strength of the machine elements and the bearing capacity of the contour array. The proposed block-modular principles of constructing a mathematical model allow solving particular problems of the system and its individual elements. From the solution of particular problems, it is now necessary to proceed to the solution of the generalized model, using equivalent loads and reduced total moments (forces). The construction of a generalized model requires a number of assumptions, but its solution will reveal the interaction between the elements of the geokhod and the geo-environment, which is very relevant.As an example, the solution of a particular problem is given-the determination of the value of the forces arising from the interaction of the blade of an external engine with the medium.A list of assumptions is formulated that allow us to describe a general mathematical model of the interaction between the geo-environment and the geokhod, as well as the processes occurring during geodetic excavation of mine workings.

“Tectonics” as a Spatial Perception Tool in the Design Process

2021 ◽  
pp. 1-20
Author(s):  
Ervin Garip ◽  
Ceren Çelik
Keyword(s):  
Design Process ◽  
Interior Design ◽  
Spatial Perception ◽  
Main Idea ◽  
Architectural Elements ◽  
Space Design ◽  
New Ideas ◽  
The Subject ◽  
New Perspective ◽  
Interior Design Students

Design process has its own structure which is affected by many aspects. Moreover, there are many tools that contribute in this multidimensional process. Within the framework of this chapter, the tectonics is suggested as a directive tool through the design process. Istanbul Technical University Interior Design students' second year studio, where tectonics was used as a spatial perception tool, was examined. The main title of the studio was festival space design, where festivals were discussed as a performance scene for urban interiors. The main idea of suggested method is to consider environmental aspects in different scales and project those findings to tectonics. The main purpose of this project is to create a new perspective to interior design studio approach. The subject of the project was shaped within the framework of testing that interior architecture is not independent from architectural elements contextually and phenomenologically and that environmental decisions and architectural tectonics can be used as a data to put forth the new ideas for interior design methodology.

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