International journal of engineering. Transactions A: basics最新文献_第9页

Adaptive Voltage-based Control of Direct-drive Robots Driven by Permanent Magnet Synchronous Motors 永磁同步电机驱动直驱机器人的自适应电压控制

International journal of engineering. Transactions A: basics Pub Date : 2017-02-09 DOI: 10.5829/idosi.ije.2017.30.04a.08

M. Sadeghijaleh, M. Fateh

{"title":"Adaptive Voltage-based Control of Direct-drive Robots Driven by Permanent Magnet Synchronous Motors","authors":"M. Sadeghijaleh, M. Fateh","doi":"10.5829/idosi.ije.2017.30.04a.08","DOIUrl":"https://doi.org/10.5829/idosi.ije.2017.30.04a.08","url":null,"abstract":"Tracking control of the direct-drive robot manipulators in high-speed is a challenging problem. The Coriolis and centrifugal torques become dominant in the high-speed motion control. The dynamical model of the robotic system including the robot manipulator and actuators is highly nonlinear, heavily coupled, uncertain and computationally extensive in non-companion form. In order to overcome these problems, this paper presents a novel adaptive control for direct-drive robot manipulators driven by Permanent Magnet Synchronous Motors (PMSM) in tracking applications. The novelty of this paper is that the proposed adaptive law is free from manipulator dynamics by using the Voltage Control Strategy (VCS). Additionally, a state space model of the robotic system driven by PMSM is presented. The VCS differs from the commonly used control strategy for robot manipulators the so called torque control strategy. The position control of the PMSM is effectively used for the tracking control of the robot manipulator. This idea takes the control problem from the manipulator control to the motor control resulting in a simple yet efficient control design. Compared with the torque control, the control design is simpler, easier to implement with better tracking performance. The control method is verified by stability analysis. Simulation results show superiority of the proposed control to the torque control applied by field oriented control on the direct-drive robot driven by PMSM.","PeriodicalId":416886,"journal":{"name":"International journal of engineering. Transactions A: basics","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133389998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Providing a Fuzzy Expert System to Assess the Maturity Level of Companies in Manufacturing Excellence in the Food Industry of Iran 伊朗食品业卓越制造企业成熟度评价的模糊专家系统

International journal of engineering. Transactions A: basics Pub Date : 2017-02-09 DOI: 10.5829/idosi.ije.2017.30.04a.11

Fahimeh Aliakbari Nouri, M. S. Nikabadi

{"title":"Providing a Fuzzy Expert System to Assess the Maturity Level of Companies in Manufacturing Excellence in the Food Industry of Iran","authors":"Fahimeh Aliakbari Nouri, M. S. Nikabadi","doi":"10.5829/idosi.ije.2017.30.04a.11","DOIUrl":"https://doi.org/10.5829/idosi.ije.2017.30.04a.11","url":null,"abstract":"This study seeks to develop a fuzzy expert system to help managers in assessing their effectiveness and position of their business on the manufacturing excellence track. Assessment process is multi-dimensional in nature and there is a relationship between the different variables of the system. In addition, both quantitative and qualitative variables as well as the uncertainty in the statements of experts must be considered in the evaluation process. Fuzzy DEMATEL technique complies with these requirements by respecting the interrelation between the factors and by converting the qualitative judgments into quantitative values for decision. Due to these features, this technique is used in this study as the best technique for developing the decision tool. Evaluation criteria were identified through a literature review and interviews with experts. Multiple pairwise comparisons were performed to determine the weights of these criteria. Then, these weights were used to build If-Then rules of decision system. This reduced the supernumerary rules of the system, and provided a more real If-Then rule base. The decision support tool, presented in this study, enables decision makers to assess manufacturing excellence from different aspects such as External Excellence (EE), Internal Excellence (IE) and Technological Excellence (TE). The results of the implementation of this fuzzy expert system in Zar-Macaron Company (as a case study) were satisfactory.","PeriodicalId":416886,"journal":{"name":"International journal of engineering. Transactions A: basics","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123202463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Welding Properties of Polymeric Nanocomposite Parts Containing Alumina Nanoparticles in Friction Stir Welding Proces 含氧化铝纳米复合材料零件搅拌摩擦焊的焊接性能

International journal of engineering. Transactions A: basics Pub Date : 2017-01-05 DOI: 10.5829/idosi.ije.2017.30.01a.18

R. Hasanzadeh, T. Azdast, A. Doniavi, S. Babazadeh, R. Lee, M. Daryadel, S. M. Shishavan

{"title":"Welding Properties of Polymeric Nanocomposite Parts Containing Alumina Nanoparticles in Friction Stir Welding Proces","authors":"R. Hasanzadeh, T. Azdast, A. Doniavi, S. Babazadeh, R. Lee, M. Daryadel, S. M. Shishavan","doi":"10.5829/idosi.ije.2017.30.01a.18","DOIUrl":"https://doi.org/10.5829/idosi.ije.2017.30.01a.18","url":null,"abstract":"Although in recent years, welding of polymers has been developed but welding of polycarbonates is still faced with serious challenges such as improving the quality of welded section. In the present study, mechanical properties of polycarbonate friction stir welded samples with different nano alumina content were investigated. For this purpose, firstly polycarbonate (as matrix) was melt compounded with nano alumina in variant weight percentages including 0, 1, 2 and 3% using a twin-screw extruder. Then, nanocomposite samples were produced using an injection molding machine and were friction stir welded with a special tool on a milling machine. The effects of weight percentage of nano alumina, travel and rotational speeds (all in four levels) were investigated on the tensile strength and hardness of the welded nanocomposite samples according to a L16 orthogonal array of Taguchi method. According to the obtained results, the weight percentage of nano alumina is the most effective parameter on the tensile strength and hardness of welded nanocomposite specimens. By increasing the percentage of nano alumina to 1%, tensile strength increased. However, by increasing the nano alumina more than 1%, this strength reduced due to agglomeration of nanoalumina in high weight percentages. Results also demonstrated that processing parameters do not affect the mechanical properties of welded nanocomposite samples significantly.","PeriodicalId":416886,"journal":{"name":"International journal of engineering. Transactions A: basics","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133095677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Fingertip Radius Effect of an on-Surface-Manipulated Object 表面操纵对象的指尖半径效应

International journal of engineering. Transactions A: basics Pub Date : 2017-01-05 DOI: 10.5829/idosi.ije.2017.30.01a.17

S. H. Jazi, P. Rasouli, M. Keshmiri

{"title":"Fingertip Radius Effect of an on-Surface-Manipulated Object","authors":"S. H. Jazi, P. Rasouli, M. Keshmiri","doi":"10.5829/idosi.ije.2017.30.01a.17","DOIUrl":"https://doi.org/10.5829/idosi.ije.2017.30.01a.17","url":null,"abstract":"Cooperative arms are two or more arms in series which assume the structure of a parallel robot on account of gripping an intermediary object, and are commonly used in accurate assembly industries, coaxialization, movement of object, etc. Gripping an intermediary object is one of the complicated subjects in analysis of cooperative arms, whose analysis is mostly dependent upon the manner the object is gripped by the arms fingertips. In the case of griping objects in frictional manner, the elimination of unwanted slippage of fingertips on the object due to the environmental factors, and also the effect of the fingertips geometry on the movement equations are among the major topics in such arms analysis. The dynamic analysis and control synthesis of the undesired slippage between an object and robot fingertips in object manipulation and the effects of finger radius or geometry of the fingertip on the function dynamics and slippage control is studied in this article. The slip/roll contact model is applied in the dynamic formulation and analysis of the finger geometry the effects of which are studied using numerical simulation. doi: 10.5829/idosi.ije.2017.30.01a.17","PeriodicalId":416886,"journal":{"name":"International journal of engineering. Transactions A: basics","volume":"218 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122123552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Partial Substitution of Styrene-butadiene-styrene with Granulated Blast-furnace Slag on the Strength Properties of Porous Asphalt 粒状炉渣部分取代丁苯对多孔沥青强度性能的影响

International journal of engineering. Transactions A: basics Pub Date : 2017-01-05 DOI: 10.5829/idosi.ije.2017.30.01a.06

S. Shahba, M. Ghasemi, S. Marandi

{"title":"Effects of Partial Substitution of Styrene-butadiene-styrene with Granulated Blast-furnace Slag on the Strength Properties of Porous Asphalt","authors":"S. Shahba, M. Ghasemi, S. Marandi","doi":"10.5829/idosi.ije.2017.30.01a.06","DOIUrl":"https://doi.org/10.5829/idosi.ije.2017.30.01a.06","url":null,"abstract":"The present experimental research investigates the feasibility of partial substitution of styrene-butadiene-styrene (SBS) with ground granulated blast-furnace slag (GGBS) for the modification of bitumen and porous asphalt mixtures. The control asphalt mixture and the seven modified porous asphalt mixtures have been analyzed separately and their performance was compared. Modified bitumen and asphalt mixtures were evaluated based on the penetration test, softening point, ductility, Marshall stability, indirect tensile strength (ITS), moisture susceptibility, uniaxial compression test, porosity, and permeability. According to the results, a blend of GGBS and SBS can be used to modify porous asphalt mixtures since it either improves or does not change their properties. The results show that using these additives have decreased penetration and ductility of bitumen and also there is an increase in softening point, so that the additives have strengthened asphalt mixture properties such as Marshall strength, ITS and Uniaxial compression strength. Furthermore, in the current research work, artificial neural networks (ANN) are used to estimate the permeability of modified porous asphalt mixtures. Sensitivity analysis was discussed for the measurement of the importance of different input parameters. The laboratory experiments and proposed ANN model indicated that a new method can be developed for permeability control.","PeriodicalId":416886,"journal":{"name":"International journal of engineering. Transactions A: basics","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133751547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Photochemical Degradation of 2,4-dichlorophenol in Aqueous Solutions by Fe2+/ Peroxydisulfate/ UV Process Fe2+/过硫酸氢盐/ UV光化学降解水中2,4-二氯苯酚

International journal of engineering. Transactions A: basics Pub Date : 2016-12-30 DOI: 10.5829/idosi.ije.2017.30.01a.03

K. Taghavi, Dariush Naghipour, Azita Mohagheghian, Mehrdad Moslemzadeh

{"title":"Photochemical Degradation of 2,4-dichlorophenol in Aqueous Solutions by Fe2+/ Peroxydisulfate/ UV Process","authors":"K. Taghavi, Dariush Naghipour, Azita Mohagheghian, Mehrdad Moslemzadeh","doi":"10.5829/idosi.ije.2017.30.01a.03","DOIUrl":"https://doi.org/10.5829/idosi.ije.2017.30.01a.03","url":null,"abstract":"Phenol and its derivatives are one of the most common contaminants in the aquatic ecosystem. Because of high toxicity of 2,4-DCP for aquatic life, resistance to biodegradation and potential for biological accumulation it is known as a priority contaminant in the aquatic environment. Advanced Oxidation Processes were successfully used for degradation of non-biodegradable contaminants that are resistant to conventional treatment processes. So, it would be interesting that advance oxidation technologies was used which apply such effective radicals as radicals (SO4). In present study, effects of concentrations of 2,4-DCP, Fe2+, peroxydisulfate (PDS) and pH value were investigated on the 2,4-DCP photochemical degradation efficiency. The increase of pH value negatively influenced the removal efficiency and reaction rate constant while an increase in the Fe2+ and (PDS) concentrations increased both the removal efficiency and reaction rate constant. In addition, the reaction rate constant increased linearly with increasing (PDS) concentration. In this study, in general, PDS was found as the most effective factor on the degradation of 2,4-DCP by Fe2+/PDS/UV.","PeriodicalId":416886,"journal":{"name":"International journal of engineering. Transactions A: basics","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127405086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Fluoride Ions Removal using Yttrium Alginate Biocomposite from an Aqueous Solution (RESEARCH NOTE) 海藻酸钇生物复合材料去除水溶液中的氟离子(研究说明)

International journal of engineering. Transactions A: basics Pub Date : 2016-12-28 DOI: 10.5829/idosi.ije.2017.30.01a.01

M. Kosari, H. Sepehrian

引用次数: 2

Modeling of Stiffening and Strengthening in Nano-Layered Silicate/Epoxy (RESEARCH NOTE) 纳米层状硅酸盐/环氧树脂的强化和强化建模(研究笔记)

International journal of engineering. Transactions A: basics Pub Date : 2016-12-28 DOI: 10.5829/idosi.ije.2017.30.01a.12

B. T. Marouf, R. Pearson, R. Bagheri

引用次数: 4

Sliding Friction Contact Stiffness Model of Involute Arc Cylindrical Gear Based on Fractal Theory 基于分形理论的渐开线圆弧圆柱齿轮滑动摩擦接触刚度模型

International journal of engineering. Transactions A: basics Pub Date : 2016-12-28 DOI: 10.5829/idosi.ije.2017.30.01a.14

W. Yang, Hou Li, M. Dengqiu, W. Yongqiao, C. Jian

{"title":"Sliding Friction Contact Stiffness Model of Involute Arc Cylindrical Gear Based on Fractal Theory","authors":"W. Yang, Hou Li, M. Dengqiu, W. Yongqiao, C. Jian","doi":"10.5829/idosi.ije.2017.30.01a.14","DOIUrl":"https://doi.org/10.5829/idosi.ije.2017.30.01a.14","url":null,"abstract":"Gear’s normal contact stiffness played an important role in the mechanical equipment. In this paper, the M-B fractal model is modified and the contact surface coefficient is put forward to set up the fractal model, considering the influence of friction, which could be used to calculate accurately the involute arc cylindrical gears’ normal contact stiffness based on the fractal theory and Hertz theory. The contact surface coefficient is an exponential function of the load, radius of curvature and tooth line radius. The simulation results validate the reasonability of the contact surface coefficient and correctness of the fractal model. The contact surfaced coefficient increases with the increase of the load, radius of curvature and tooth line radius; the normal contact stiffness increases with the increase of material properties parameters, radius of the gear, load and fractal dimension (when fractal dimension is greater than 1.85, the normal contact stiffness decreases). Meanwhile, the normal contact stiffness increases with the decrease of roughness and decreases exponentially or linearly with the increase of friction coefficient. Research results are the foundation of the further analysis of arc gear contact problems.","PeriodicalId":416886,"journal":{"name":"International journal of engineering. Transactions A: basics","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133777573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Design of a Reliable Facility Location Model for Health Service Networks 卫生服务网络可靠设施选址模型设计

International journal of engineering. Transactions A: basics Pub Date : 2016-12-11 DOI: 10.5829/idosi.ije.2017.30.01a.10

N. Zarrinpoor, M. Fallahnezhad, M. Pishvaee

引用次数: 9