Research on the Optimal Design Method of the Main Components for the Wheelchair Pickup

2013 ◽  
Vol 791-793 ◽  
pp. 799-802
Author(s):  
Ya Ping Wang ◽  
H.R. Shi ◽  
L. Gao ◽  
Z. Wang ◽  
X.Y. Jia ◽  
...  
Keyword(s):  
Parametric Design ◽  
Design Method ◽  
Basic Function ◽  
Design Parameters ◽  
Algorithm Optimization ◽  
Optimization Analysis ◽  
Research Designs ◽  
Optimal Design Method ◽  
Main Components

With the increasing of the aging of population all over the world, and With the inconvenience coming from diseases and damage, there will be more and more people using the wheelchair as a tool for transport. When it cant be short of the wheelchair in the daily life, the addition of the function will bring the elevation of the quality of life for the unfortunate. Staring with this purpose, the research designs a pickup with planetary bevel gear for the wheelchair. After determining the basic function of the wheelchair aids, the study determines the design parameters by using the knowledge of parametric design and completes the model for the system with Pro/E, on the other hand, it completes key components optimization analysis which is based on genetic algorithm optimization.

Parametric Design of Cycloid Gear Based on SolidWorks

2012 ◽  
Vol 538-541 ◽  
pp. 3106-3109
Author(s):  
Lei Lei ◽  
Ying Tao ◽  
Tian Min Guan
Keyword(s):  
3D Model ◽  
Parametric Design ◽  
Secondary Development ◽  
Design Parameters ◽  
Gear Design ◽  
Complex Parts

In order to improve the efficiency and quality of design of complex parts, cycloid gear, in the pin-cycloidal transmission, this paper used SolidWorks to built accurately cycloid gear 3d model, and the VBA to program procedure for the secondary development, realized the parametric design of cycloid gear. Designer just enter the design parameters of cycloid gear , then gain the accurately generated cycloid gear 3d model rapidly , greatly improving the speed of cycloid gear design.

scholarly journals The fractional PID controllers tuned by genetic algorithms for expansion turbine in the cryogenic air separation process

2014 ◽  
Vol 68 (5) ◽  
pp. 519-528 ◽  
Author(s):  
Ljubisa Bucanovic ◽  
Mihailo Lazarevic ◽  
Srecko Batalov
Keyword(s):  
Design Method ◽  
Optimization Procedure ◽  
Performance Criterion ◽  
Separation Process ◽  
Air Separation ◽  
Algorithm Optimization ◽  
Expansion Turbine ◽  
Different Temperatures ◽  
Cryogenic Process

This paper deals with the design of a new algorithm of PID control based on fractional calculus (FC) in production of technical gases, i.e. in a cryogenic air separation process. Production of low pressure liquid air was first introduced by P. L. Kapica and involved expansion in a gas turbine. For application in the synthesis of the control law, for the input temperature and flow of air to the expansion turbine, it is necessary to determine the appropriate differential equations of the cryogenic process of mixing of two gaseous airflows at different temperatures before entrance to the expansion turbine. Thereafter, the model is linearized and decoupled and consequently classical PID and fractional order controllers are taken to assess the quality of the proposed technique. A set of optimal parameters of these controllers are achieved through the genetic algorithm optimization procedure by minimizing a cost function. Our design method focuses on minimizing performance criterion which involves IAE, overshoot, as well as settling time. A time-domain simulation was used to identify the performance of controller with respect to a traditional optimized PID controller.

scholarly journals DESAIN PARAMETRIK PADA PERANCANGAN DESAIN STUDI BENTUK BANGUNAN BERTINGKAT BANYAK

NALARs ◽  
2019 ◽  
Vol 18 (2) ◽  
pp. 153
Author(s):  
Hendro Trieddiantoro Putro ◽  
Luhur Sapto Pamungkas
Keyword(s):  
Parametric Design ◽  
Design Method ◽  
Design Methods ◽  
Design Tool ◽  
Experimental Results ◽  
Design Parameters ◽  
Processing Parameter ◽  
Ground Floor ◽  
Parameter Values ◽  
Story Building

ABSTRAK. Melalui penelitian ini, peneliti menggunakan metode Desain Parametrik untuk studi bentuk bangunan bertingkat banyak. Rhinoceros dan Grasshopper digunakan sebagai alat studi bentuk bangunan bertingkat banyak. Desain parametrik dilakukan dengan parameter, yaitu berupa bentuk lantai dasar, jumlah lantai, ketebalan lantai, jarak antar lantai, derajat putar, dan olah bentuk. Eksperimen ditunjukkan dengan jumlah alternatif yang dihasilkan dari mengolah nilai parameter. Tujuan penelitian ini adalah mendapatkan gambaran proses mendesain bangunan berlantai banyak menggunakan metode desain parametrik. Hasil penelitian menunjukkan kreativitas dalam mengolah bentuk dasar menjadi bentuk bangunan bertingkat banyak.Kata kunci: Desain Parametrik, Software Rhinoceros dan Grasshopper, Bangunan Bertingkat Banyak ABSTRACT. The researcher has used the Parametric Design method to do form studies of a multi-story building. The Rhinoceros and Grasshopper software have been used as a design tool.  Design parameters were ground floor shapes, number of floors, the thickness of the story, the distance between levels, degree of rotation, and graph mapper. The experimental results are indicated by the number of alternatives generated from processing parameter values. The purpose of this study is to get a description of the process of designing many-story buildings using parametric design methods. The results of the study showed that creativity in processing basic forms into multi-story buildings. Keywords: Parametric Design, Rhinoceros and Grasshopper Software, Multi-storey Buildings

Effects of Design Parameter on Occurrence of Snap Load and Wear of Mooring Line for Spar-Buoy With Ring-Fin Motion Stabilizer for Shallow Sea

2021 ◽  
Author(s):  
Yusuke Yamamoto ◽  
Taishi Morimoto ◽  
Toru Katayama ◽  
Masahiro Goto ◽  
Ryo Kodama
Keyword(s):  
Design Method ◽  
Empirical Method ◽  
Horizontal Motion ◽  
Design Parameters ◽  
Mooring Line ◽  
Wave Excitation ◽  
Shallow Sea ◽  
Optimal Design Method ◽  
Motion Mode ◽  
Acceleration Component

Abstract The purpose of this study is to propose an optimal design method of the spar-buoy with ring-fin motion stabilizer for shallow sea and its mooring system, in order to avoid the occurrence of snap load. The mechanism of occurrence of snap load is investigated by model tests, and design parameters for avoiding the occurrence of snap load are investigated. From the observation of model’s motion, it has been realized that the snap load is caused by the tension of mooring line to stop the buoy’s horizontal motion, which relaxes the mooring line. Moreover, it has been confirmed that the horizontal motion is caused by the horizontal forces acting on the center pipe and float of the buoy, which relates to the acceleration component of wave excitation forces. In this paper, the effects of changing of design of the buoy (: diameter of center pipe and float, size of stabilizer, density of the buoy, length of mooring line) on avoiding or reducing snap load are investigated by using a numerical simulation (OrcaFlexver.11.0b), and the wear amounts are also estimated by using an empirical method (Takeuchi et al., 2019). From the results, it is confirmed that changing the buoy’s motion mode by shortening mooring line is effective to avoiding the occurrence of snap load, and to reduce the wear amount of the mooring line.

scholarly journals An Optimal Design Method for Compliant Mechanisms

2021 ◽  
Vol 2021 ◽  
pp. 1-18
Author(s):  
Ngoc Le Chau ◽  
Ngoc Thoai Tran ◽  
Thanh-Phong Dao
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Optimal Design ◽  
Compliant Mechanisms ◽  
Design Method ◽  
Fitness Function ◽  
Current Method ◽  
Design Parameters ◽  
Optimal Design Method ◽  
Element Method

Compliant mechanisms are crucial parts in precise engineering but modeling techniques are restricted by a high complexity of their mechanical behaviors. Therefore, this paper devotes an optimal design method for compliant mechanisms. The integration method is a hybridization of statistics, finite element method, artificial intelligence, and metaheuristics. In order to demonstrate the superiority of the method, one degree of freedom is considered as a study object. Firstly, numerical datasets are achieved by the finite element method. Subsequently, the main design parameters of the mechanism are identified via analysis of variance. Desirability of both displacement and frequency of the mechanism is determined, and then, they are embedded inside a fuzzy logic system to combine into a single fitness function. Then, the relationship between the fine design variables and the fitness function is modeled using the adaptive network-based fuzzy inference system. Next, the single fitness function is maximized via moth-flame optimization algorithm. The optimal results determined that the frequency is 79.517 Hz and displacement is 1.897 mm. In terms of determining the global optimum solution, the current method is compared with the Taguchi, desirability, and Taguchi-integrated fuzzy methods. The results showed that the current method is better than those methods. Additionally, the devoted method outperforms the other metaheuristic algorithms such as TLBO, Jaya, PSOGSA, SCA, ALO, and LAPO in terms of faster convergence. The result of this study will be considered to apply for multiple-degrees-of-freedom compliant mechanisms in future work.

scholarly journals Methods of calculation of the power for dough kneading with the use of blade-free working part

2020 ◽  
Vol 100 (4) ◽  
pp. 75-85
Author(s):  
Igor Stadnik ◽  
Oksana Pylypets ◽  
Mykhailo Pylypets ◽  
Volodymyr Poddubny ◽  
Olena Kolomiiets
Keyword(s):  
Technological Process ◽  
Rotation Frequency ◽  
Design Parameters ◽  
Technical Solution ◽  
Friction Forces ◽  
Cylindrical Working ◽  
Increase Productivity ◽  
Main Components ◽  
Baking Industry

Baking industry plays one of the most important roles in the production of vital food products. The quality of the bakery products can be improved through the improvement of quality in technological process of dough kneading. A technical solution for providing greater contact with the environment, reducing the duration of the process, and, accordingly, increase productivity due to the developed design of a new machine with a cylindrical working body was proposed. The ways of regulating the course of the technological process in the working chamber of a new kneading machine are considered. They are based on the change of parameters: duration of kneading, temperature, humidity, rotation frequency of the working body. A method of calculating the required power based on the process of kneading the dough is proposed. It allowed obtaining a theoretical calculation of power consumption at unknown values of the friction forces action on the kneading drum, but the known frequency of its rotation with the corresponding design parameters and factors of influence. In addition, it makes possibility to determine the effort main components that affect to the power increase of the working body drive.

Parametric Design of Crankshaft Based on CATIA Secondary Development Platform

2014 ◽  
Vol 602-605 ◽  
pp. 287-290
Author(s):  
Hong Gang Yang ◽  
Shu Jie Wang ◽  
Yi Rong Xie
Keyword(s):  
Parametric Design ◽  
Design Method ◽  
Secondary Development ◽  
Design Parameters ◽  
Shape Design ◽  
Research Results ◽  
Development Platform ◽  
Automation Technology

Parametric design method of crankshaft is investigated in this study, based on the application of VB environment and CATIA secondary development of automation technology. Using the shape design parameters, the crankshaft can be established parametrically. The research results show that the proposed method can quickly generate crank shape, thus the repetitive operations can be decreased, and the costs can be saved.

Early-Stage Analysis for MEMS Structural Optimization I: Concept

2005 ◽  
Author(s):  
Takahiro Miki ◽  
Koji Ishikawa ◽  
Hiroki Mamiya ◽  
Qiang Yu
Keyword(s):  
Optimal Design ◽  
Early Stage ◽  
Design Method ◽  
Design Stage ◽  
Design Parameters ◽  
Total System ◽  
Trade Offs ◽  
Optimal Design Method ◽  
Stage Analysis ◽  
System Characteristics

We report on the development of a new micro-electro-mechanical systems (MEMS) optimal design method called MEMS Early-Stage Analysis (MESA), which supports the total system evaluation of MEMS devices before the design stage. Recently total system simulation and design using Computer Aided Engineering (CAE) analyses have become important in MEMS device development due to their fabrication and design complexity. Although a lot of CAE methods that can be applied to MEMS have been demonstrated, time-consuming trial-and-error processes are inevitable at the design stage in order to obtain an optimal structure. In our design method, we can clarify and simplify the relation between design parameters and the system characteristics using a MESA weighted orthogonal array. In the MESA array, the sensitivity of each design factor for the system performance shows numerically how the design parameter influences the system characteristics. The existent trade-offs between design parameters can be minimized by both modifying the design concept and adjusting the sensitivities. Therefore MEMS designers are able to optimize the total system based on the information from the MESA array. Moreover, particular system characteristics can be enhanced in order to meet the system requirement through the adjustment of weight values for the sensitivities. The MESA makes the evaluation of system validity possible at the concept design stage. To conduct the informative optimal design method at the beginning of development leads the reduction of the total MEMS design time and cost.

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