Racing car design using knowledge aided engineering

2000 ◽  
Vol 14 (3) ◽  
pp. 235-249 ◽  
Author(s):  
LORENZO SUSCA ◽  
FERRUCCIO MANDORLI ◽  
CATERINA RIZZI ◽  
UMBERTO CUGINI
Keyword(s):  
User Interface ◽  
Computer Aided Design ◽  
Center Of Mass ◽  
Design Parameters ◽  
Graphic User Interface ◽  
Tree Model ◽  
Car Model ◽  
Knowledge Based ◽  
Design Variables ◽  
Graphic Elements

The evolution of computer aided design (CAD) systems and related technologies has promoted the development of software for the automatic configuration of mechanical systems. This occurred with the introduction of knowledge aided engineering (KAE) systems that enable computers to support the designer during the decision-making process. This paper presents a knowledge-based application that allows the designer to automatically compute and evaluate mass properties of racing cars. The system is constituted by two main components: the computing core, which determines the car model, and the graphic user interface, because of which the system may be used also by nonprogrammers. The computing core creates the model of the car based on a tree structure, which contains all car subsystems (e.g., suspension and chassis). Different part–subpart relationships define the tree model and link an object (e.g., suspension) to its components (e.g., wishbones and wheel). The definition of independent parameters (including design variables) and relationships definition allows the model to configure itself by evaluating all properties related to dimension, position, mass, etc. The graphic user interface allows the end user to interact with the car model by editing independent design parameters. It visualizes the main outputs of the model, which consist in numeric data (mass, center of mass of both the car and its subsystems) and graphic elements (car and subsystems 3D representation).

DESIGN PROGRAM IN GRAPHIC USER INTERFACE ENVIRONMENT FOR AUTOMOBILE ER DEVICES

2005 ◽  
Vol 19 (07n09) ◽  
pp. 1612-1618
Author(s):  
S. C. LIM ◽  
J. S. PARK ◽  
J. W. SOHN ◽  
S. B. CHOI
Keyword(s):  
User Interface ◽  
Shock Absorber ◽  
Performance Characteristics ◽  
Design Parameters ◽  
Graphic User Interface ◽  
Vehicle System ◽  
Design Program ◽  
Engine Mount ◽  
Display Window ◽  
Er Fluid

This work presents a design and analysis program for vehicle devices utilizing an electrorheological (ER) fluid. The program is operated in graphic user interface (GUI) environment and the initial window is consisted of four subprogram modules which are related to ER shock absorber, ER seat damper, ER engine mount, and ER anti-lock brake system (ABS), respectively. In order to execute each module, both material properties and design parameters are to be chosen by the user. Then, the output display window shows the field-dependent performance characteristics to be considered as design criteria. In addition, control performances of the vehicle system equipped with ER devices are displayed in time and frequency domain. In order to demonstrate the effectiveness of the proposed program, ER shock absorber and ER ABS are designed and manufactured and their performance characteristics are evaluated.

Ergonomic qualities of graphic user interfaces (GUI): state and evolution

2019 ◽  
pp. 51-56 ◽  
Author(s):  
Ivan V. Stepanyan
Keyword(s):  
User Interface ◽  
User Interfaces ◽  
Information Technologies ◽  
Comfort Level ◽  
Graphic User Interface ◽  
Mental Work ◽  
Occupational Risk Factors ◽  
Effective Work ◽  
Graphic Elements ◽  
Graphic User Interfaces

More workers are involved into interaction with graphic user interfaces most part of the working shift. However, low ergonomic qualities or incorrect usage of graphic user interface could result in risk of unfavorable influence on workers’ health. The authors revealed and classified typical scenarios of graphic user interface usage. Various types of graphic user interface and operator occupations are characterized by various parameters of exertion, both biomechanical and psycho-physiological. Among main elements of graphic user interface are presence or absence of mouse or joystick, intuitive clearness, balanced palette, fixed position of graphic elements, comfort level, etc. Review of various graphic user interface and analysis of their characteristics demonstrated possibility of various occupational risk factors. Some disclosed ergonomic problems are connected with incorporation of graphic user interface into various information technologies and systems. The authors presented a role of ergonomic characteristics of graphic user interface for safe and effective work of operators, gave examples of algorithms to visualize large information volumes for easier comprehension and analysis. Correct usage of interactive means of computer visualization with competent design and observing ergonomic principles will optimize mental work in innovative activity and preserve operators’ health. Prospective issues in this sphere are ergonomic interfaces developed with consideration of information hygiene principles, big data analysis technology and automatically generated cognitive graphics.

scholarly journals WORKSPACE ANALYSIS AND OPTIMIZATION OF THE PARALLEL ROBOTS BASED ON COMPUTER-AIDED DESIGN APPROACH

2020 ◽  
Vol 18 (1) ◽  
pp. 079
Author(s):  
Badreddine Aboulissane ◽  
Larbi El Bakkali ◽  
Jalal El Bahaoui
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Kinematic Chain ◽  
Parallel Manipulators ◽  
Parallel Robots ◽  
Design Parameters ◽  
Reachable Workspace ◽  
Design Variables ◽  
Computer Aided ◽  
Aided Design

This paper provides workspace determination and analysis based on the graphical technique of both spatial and planar parallel manipulators. The computation and analysis of workspaces will be carried out using the parameterization and three-dimensional representation of the workspace. This technique is implemented in CAD (Computer Aided Design) Software CATIA workbenches. In order to determine the workspace of the proposed manipulators, the reachable region by each kinematic chain is created as a volume/area; afterwards, the full reachable workspace is obtained by the application of a Boolean intersection function on the previously generated volumes/areas. Finally, the relations between the total workspace and the design parameters are simulated, and the Product Engineering Optimizer workbench is used to optimize the design variables in order to obtain a maximized workspace volume. Simulated annealing (SA) and Conjugate Gradient (CG) are considered in this study as optimization tools.

scholarly journals GRAPHIC USER INTERFACE ON VIRTUAL REALITY TOUR SCENE OF SIMIGAPI

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Agatha Maisie Tjandra
Keyword(s):  
Virtual Reality ◽  
User Interface ◽  
Virtual World ◽  
Production Method ◽  
Graphic User Interface ◽  
User Perspective ◽  
Story Line ◽  
Head Mounted Display ◽  
Graphic Elements ◽  
3D User Interface

(Simulasi Mitigasi Gunung Berapi- mitigation simulator volcanic eruption) is an application of serious game with story line by using virtual reality using head mounted display. There are three parts of SIMIGAPI based on the process of mitigation. The main focus of this paper is on the evacuation parts. In this part, user are given a mission to escape from volcanic ashes by walking through the virtual world and passing the pin points. Briefing are given by using text, and graphic elements using 3D graphic user interface. On the other hand, bad user interface may decrease the immersive purposes and easily children as user can be bored. This automatically can affect failed the process transferring information evacuation mitigation to user. This paper aim to explain about creating 3D user interface and observing user experience for education purposes on evacuation part of SIMIGAPI. This project use production method and quantitative questionnaire test to know user perspective about SIMIGAPI information by using GUI.

A Chinese cooking robot for elderly and disabled people

Robotica ◽  
2011 ◽  
Vol 29 (6) ◽  
pp. 843-852 ◽  
Author(s):  
Wen-Tao Ma ◽  
Wei-Xin Yan ◽  
Zhuang Fu ◽  
Yan-Zheng Zhao
Keyword(s):  
User Interface ◽  
Special Needs ◽  
Daily Life ◽  
Personal Digital Assistant ◽  
Design Principles ◽  
Graphic User Interface ◽  
Disabled People ◽  
Chinese Cooking ◽  
Barrier Free

Cooking themselves is very important and difficult for elderly and disabled people in daily life. This paper presents a cooking robot for those people who are confined to wheelchairs. The robot can automatically load ingredients, cook Chinese dishes, take cooked foods out, deliver dishes to the table, self-clean, collect used ingredient box components, and so on. Its structure and interface is designed based on the barrier-free design principles. Elderly and disabled people can only click one button in the friendly Graphic User Interface of a Personal Digital Assistant (PDA) to launch the cooking processes, and several classic Chinese dishes would be placed in front of them one after another within few minutes. Experiments show that the robot can meet their special needs, and the involved aid activities are easy and effective for elderly and disabled people.

A unified framework for the design of low-complexity wavelet filters

2017 ◽  
Vol 15 (06) ◽  
pp. 1750054 ◽  
Author(s):  
Ameya K. Naik ◽  
Raghunath S. Holambe
Keyword(s):  
Feature Extraction ◽  
Compact Support ◽  
Low Complexity ◽  
Design Parameters ◽  
Unified Framework ◽  
Vanishing Moments ◽  
Wavelet Filters ◽  
Design Variables ◽  
Optimum Filter ◽  
Simulation Results

An outline is presented for construction of wavelet filters with compact support. Our approach does not require any extensive simulations for obtaining the values of design variables like other methods. A unified framework is proposed for designing halfband polynomials with varying vanishing moments. Optimum filter pairs can then be generated by factorization of the halfband polynomial. Although these optimum wavelets have characteristics close to that of CDF 9/7 (Cohen-Daubechies-Feauveau), a compact support may not be guaranteed. Subsequently, we show that by proper choice of design parameters finite wordlength wavelet construction can be achieved. These hardware friendly wavelets are analyzed for their possible applications in image compression and feature extraction. Simulation results show that the designed wavelets give better performances as compared to standard wavelets. Moreover, the designed wavelets can be implemented with significantly reduced hardware as compared to the existing wavelets.

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