International Journal of Engineering - Transactions C: Aspects最新文献_第7页

Differential Flatness Method Based on Pre-set Guidance and Control Subsystem Design for a Surface to Surface Flying Vehicle (TECHNICAL NOTE) 基于预先设定制导与控制子系统的面地飞行器差动平整度法设计(技术说明)

International Journal of Engineering - Transactions C: Aspects Pub Date : 2017-04-21 DOI: 10.5829/ije.2017.30.06c.12

M. R. Taheri, R. Esmaelzadeh, J. Karimi

{"title":"Differential Flatness Method Based on Pre-set Guidance and Control Subsystem Design for a Surface to Surface Flying Vehicle (TECHNICAL NOTE)","authors":"M. R. Taheri, R. Esmaelzadeh, J. Karimi","doi":"10.5829/ije.2017.30.06c.12","DOIUrl":"https://doi.org/10.5829/ije.2017.30.06c.12","url":null,"abstract":"The purpose of this paper is to design a guidance and control system and evaluate the performance of a sample surface-to-surface flying object based on preset guidance with a new prospective. In this study, the main presented idea is usage of unique property of governor differential equations in order to design and develop a controlled system. Thereupon a set of system output variables have been examined by specific tests as candidate of flattened variables. It is proved that the dynamism of the studying system has a property of differential flatness. This property as a basement for observing all of the system dynamic variables could be a perfect option to remove lack of observability of nonlinear systems. According to the information gained in the procedure of flatness demonstrating, there was a similarity between the control command generating in feedback linearization and flat systems tests. This similarity led to the application of the flat systems technique for the mentioned control method. The guidance and control system suggested in this paper is able to follow a set of specific reference trajectories in order to target different ranges. This ability without recalculating controller gains could be done only by having the rate of rotate of flying object in middle phase of maneuver. To validate the proposed FBC for the studied problem, another usual control method has been investigated. For this purpose, the linear quadratic regulator as straight forward control method in optimal control field has been applied. This feature reveals full compatibility between controller block and reference trajectory generator block. doi: 10.5829/ije.2017.30.06c.12","PeriodicalId":14066,"journal":{"name":"International Journal of Engineering - Transactions C: Aspects","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82584685","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

SIMULATION AND MODELING OF A HIGH SENSITIVITY MICRO-ELECTRO-MECHANICAL SYSTEMS CAPACITIVE PRESSURE SENSOR WITH SMALL SIZE AND CLAMPED SQUARE DIAPHRAGM 小尺寸夹持方形膜片的高灵敏度微机电系统电容式压力传感器的仿真与建模

International Journal of Engineering - Transactions C: Aspects Pub Date : 2017-04-21 DOI: 10.5829/ije.2017.30.06c.04

M. Y. Esbouei, Y. Hezarjaribi, B. Ganji

引用次数: 2

Fitting the Three-parameter Weibull Distribution by using Greedy Randomized Adaptive Search Procedure 贪心随机自适应搜索法拟合三参数威布尔分布

International Journal of Engineering - Transactions C: Aspects Pub Date : 2017-02-09 DOI: 10.5829/idosi.ije.2017.30.03c.12

H. Mokhtari, A. Salmasnia

引用次数: 0

Effect of Surface Morphologies on the Isothermal Oxidation Behavior of MCrAlY Coatings Fabricated by High-velocity Oxyfuel Processes 表面形貌对高速氧燃料法制备MCrAlY涂层等温氧化行为的影响

International Journal of Engineering - Transactions C: Aspects Pub Date : 2017-02-09 DOI: 10.5829/idosi.ije.2017.30.03c.13

M. Tahari, F. Naeimi

引用次数: 4

A Numerical Study on Aluminum Plate Response under Low Velocity Impact 低速冲击下铝板响应的数值研究

International Journal of Engineering - Transactions C: Aspects Pub Date : 2017-02-09 DOI: 10.5829/idosi.ije.2017.30.03c.14

M. Jamal-Omidi, M. Suki

{"title":"A Numerical Study on Aluminum Plate Response under Low Velocity Impact","authors":"M. Jamal-Omidi, M. Suki","doi":"10.5829/idosi.ije.2017.30.03c.14","DOIUrl":"https://doi.org/10.5829/idosi.ije.2017.30.03c.14","url":null,"abstract":"In the present paper, a numerical study is performed to investigate the response of different plates aluminum alloys subjected to low velocity impact condition. In this regard, the square AA5083-H116 aluminum plates with dimensions 300×300 and 3 mm and 5 mm thick under low velocity impact are modelled, and a mesh convergence study is carried out to decide the appropriate number of elements. In this research, the influence of strain rate effects in low velocity impact response is examined by doing a comparative study using the isotropic elasto-plasticity and the Johnson-cook material models. The response to impact events of models including deflection history and maximum and permanent deflection is extracted and validated by available numerical and experimental data in literature. The results indicate that the strain rate has a significant influence on time histories and increases the accuracy of the predicted data. Then, using the developed modeling procedure, the behavior of three aluminum alloys under low velocity impact is investigated based on Johnson-Cook model. The results show that 7075-T6 and 6061-T6 alloys have the highest and lowest stiffness, respectively. Also, the lowest rate of absorbed energy to mass is observed in the 7075-T6 alloy. doi: 10.5829/idosi.ije.2017.30.03c.14","PeriodicalId":14066,"journal":{"name":"International Journal of Engineering - Transactions C: Aspects","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90169302","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: 6

Addressing the Freight Consolidation and Containerization Problem by Recent and Hybridized Meta-heuristic Algorithms 用混合元启发式算法解决货运集运和集装箱化问题

International Journal of Engineering - Transactions C: Aspects Pub Date : 2017-02-09 DOI: 10.5829/idosi.ije.2017.30.03c.10

E. Nasiri, A. Afshari, M. Hajiaghaei-Keshteli

{"title":"Addressing the Freight Consolidation and Containerization Problem by Recent and Hybridized Meta-heuristic Algorithms","authors":"E. Nasiri, A. Afshari, M. Hajiaghaei-Keshteli","doi":"10.5829/idosi.ije.2017.30.03c.10","DOIUrl":"https://doi.org/10.5829/idosi.ije.2017.30.03c.10","url":null,"abstract":"Nowadays, in global free market, third-party logistics providers (3PLs) are becoming increasingly important. Hence, this study aims to develop the freight consolidation and containerization problem, which consists of loading items into containers and then shipping these containers to different warehouse they are delivered to their final destinations. In order to handle the proposed problem, this research not only uses the traditional and recent algorithms, but also the two new hybridized methods are introduced in order to strengthen the advantages of recent ones. In this regard, this study considers the two important phases in meta-heuristic to develop new ones. Besides, Taguchi experimental design method is utilized to set and estimate the proper values of the algorithms’ parameters to improve their performance. For the purpose of performance evaluation of the proposed algorithms, various problem sizes are employed and the computational results of the algorithms are compared with each other. Finally, the impacts of the rise in the problem size on the performance of the proposed algorithms are investigated.","PeriodicalId":14066,"journal":{"name":"International Journal of Engineering - Transactions C: Aspects","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78292575","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

A Planar, Layered Ultra-wideband Metamaterial Absorber for Microwave Frequencies 一种用于微波频率的平面层状超宽带吸收材料

International Journal of Engineering - Transactions C: Aspects Pub Date : 2017-02-09 DOI: 10.5829/idosi.ije.2017.30.03c.02

S. Jarchi, O. Soltan-Mohammadi, J. Rashed‐Mohassel

引用次数: 3

A Novel Interactive Possibilistic Mixed Integer Nonlinear Model for Cellular Manufacturing Problem under Uncertainty 不确定条件下元胞制造问题的一种新的交互可能混合整数非线性模型

International Journal of Engineering - Transactions C: Aspects Pub Date : 2017-02-09 DOI: 10.5829/idosi.ije.2017.30.03c.08

A. Hashemoghli, I. Mahdavi, A. Tajdin

{"title":"A Novel Interactive Possibilistic Mixed Integer Nonlinear Model for Cellular Manufacturing Problem under Uncertainty","authors":"A. Hashemoghli, I. Mahdavi, A. Tajdin","doi":"10.5829/idosi.ije.2017.30.03c.08","DOIUrl":"https://doi.org/10.5829/idosi.ije.2017.30.03c.08","url":null,"abstract":"Elaborating an appropriate cellular manufacturing system (CMS) could solve many structural and operational issues. Thereby, considering some significant factors as worker skill, machine hardness, and product quality levels could assist the companies in current competitive environment. This paper proposes a novel interactive possibilistic mixed integer nonlinear approach to minimize the total costs of cellular manufacturing design. The proposed approach is elaborated regarding operation sequence, worker and machine assignments, route and worker flexibility, machine hardness level, worker and machine capacity, worker skill level, and product quality level based on imprecise information. Meanwhile, the product demand parameter because of its nature is defined based on fuzzy setting environment. Then, the interactive possibilistic approach is provided to cope with the existed uncertainty according to the problem environment. Finally, a numerical experiment is considered to show the capability of the proposed approach. The results of the proposed interactive possibilistic model show that the presented approach could assist companies for minimizing their costs and manipulating the machines and workers’ suitability. In this respect, comparing the obtained results from the proposed approach and similar circumstances shows that the proposed model could reduce the total costs by 27.8%.","PeriodicalId":14066,"journal":{"name":"International Journal of Engineering - Transactions C: Aspects","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82482892","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

A Dimensionless Parameter Approach based on Singular Value Decomposition and Evolutionary Algorithm for Prediction of Carbamazepine Particles Size 基于奇异值分解和进化算法的卡马西平颗粒粒径预测无量纲参数方法

International Journal of Engineering - Transactions C: Aspects Pub Date : 2017-02-09 DOI: 10.5829/idosi.ije.2017.30.03c.01

R. Rostamani, S. S. A. Talesh

{"title":"A Dimensionless Parameter Approach based on Singular Value Decomposition and Evolutionary Algorithm for Prediction of Carbamazepine Particles Size","authors":"R. Rostamani, S. S. A. Talesh","doi":"10.5829/idosi.ije.2017.30.03c.01","DOIUrl":"https://doi.org/10.5829/idosi.ije.2017.30.03c.01","url":null,"abstract":"The particle size control of drug is one of the most important factors affecting the efficiency of the nano-drug production in confined liquid impinging jets. In the present research, for this investigation the confined liquid impinging jet was used to produce nanoparticles of Carbamazepine. The effects of several parameters such as concentration, solution and anti-solvent flow rate and solvent type were investigated. So far no analytical and acceptable model has been provided to predict the Carbamazepine particle size in confined liquid impinging jets. In this study the variables affecting the size of the particle became dimensionless using the dimensional analysis then by solving the equation with singular value decomposition method, a simple dimensionless relation was obtained for this process. Moreover, using the genetic algorithm the coefficients of dimensionless parameters were optimally extracted to minimize the error between the model and the laboratory outputs. The determination coefficient of the equation obtained by singular value decomposition method and the improved equation using genetic algorithm were obtained as 0.5291 and 0.5697, respectively. For such a complex experimental system, the accuracy of the obtained equations in spite of their simplicity is acceptable. The obtained results were compared with the results of the neural network model. The results showed that despite the higher precision of the obtained relations by the neural network, the relations obtained by singular value decomposition can be used as a simple method using the dimensionless parameters with acceptable acuracy to predict the particle size in confined liquid impinging jets.","PeriodicalId":14066,"journal":{"name":"International Journal of Engineering - Transactions C: Aspects","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89937858","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

A Novel Method for Implementing of Time-of-use to Improve the Performance of Electric Distribution Systems: A Case Study 一种实施分时以提高配电系统性能的新方法:一个案例研究

International Journal of Engineering - Transactions C: Aspects Pub Date : 2017-02-09 DOI: 10.5829/idosi.ije.2017.30.03c.05

M. Hamidian, A. Sedighi

{"title":"A Novel Method for Implementing of Time-of-use to Improve the Performance of Electric Distribution Systems: A Case Study","authors":"M. Hamidian, A. Sedighi","doi":"10.5829/idosi.ije.2017.30.03c.05","DOIUrl":"https://doi.org/10.5829/idosi.ije.2017.30.03c.05","url":null,"abstract":"Increased electric energy consumption in recent years, associated economic problems, reduced reliability and increased power losses in electric networks. One of the main solutions in smart grids to overcome the mentioned problems is demand response programs. In demand response programs, operators apply time-varying tariffs to consumers, and convince them to change their consumption pattern. Among the demand response programs, the most effective program for subscribers who receive electricity at fixed price is time-of-use (TOU) pricing. This paper offers a new approach to implementing TOU program, which is determining the scheduling and pricing of TOU tariff simultaneously taking into account the objectives of smoothing the load profile, reducing the losses and energy not supplied. The proposed method is simulated in MATLAB, and has been evaluated on an urban distribution network in Yazd Electrical Distribution Company (YEDC) that feeds 35 distribution transformers (20/0.4kV) through a radial feeder. Results show that implementation of this method has only a minor increase in cost and reduction in consumption for subscribers, and makes load profile more smooth, improve reliability and reduce power losses.","PeriodicalId":14066,"journal":{"name":"International Journal of Engineering - Transactions C: Aspects","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83290739","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: 3