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Development of a Programmable Logic Control-Based Automatic Car Washing System 基于可编程逻辑控制的自动洗车系统的开发
Pub Date : 2020-06-15 DOI: 10.19026/rjaset.17.6045
M. Arowolo, B. Olorunfemi, Abiodun M. Adebimpe
This project involves the design and construction of a Programmable Logic Control (PLC) based automatic car washing system with the aim of reducing water wastage by incorporating a recycling system. The traditional means of washing vehicles was time consuming, involved lots of manual power and led to water pollution of the environment. This system is designed using aluminum metal to fabricate the framework. The system is implemented using three means, namely: Mechanical, Electrical and Programming devices. The machine was designed to use an induction electric motor to move the car on the conveyor belt from one workstation to the next incorporating the use of a VFD to reduce motor speed, and incorporating the use of a PLC to control the logical operations of the system with the use of sensors and actuators. Also, the system made use of a filter net to separate dirt from used water in order to allow recycling of the system by pumping it back into the system. After testing the automatic car washing system, it performed the car washing process efficiently from one work station to another, and reduced water wastage by recycling the water.
这个项目涉及设计和建造一个基于可编程逻辑控制(PLC)的自动洗车系统,目的是通过结合回收系统来减少水的浪费。传统的洗车方式耗时长,耗费大量的人力,还会造成环境的水污染。本系统采用铝材制作框架。该系统通过三种手段实现,即:机械、电气和编程设备。该机器被设计为使用感应电动机将传送带上的小车从一个工作站移动到另一个工作站,并结合使用变频器降低电机速度,并结合使用PLC控制系统的逻辑操作,使用传感器和执行器。此外,该系统利用滤网从废水中分离污垢,以便通过将其泵回系统进行系统的再循环。经过对自动洗车系统的测试,该系统可以高效地完成从一个工作站到另一个工作站的洗车过程,并通过水的循环利用减少了水的浪费。
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引用次数: 0
A Novel Approach in Digital Controllers Design Using Metaheuristic Algorithms 基于元启发式算法的数字控制器设计新方法
Pub Date : 2020-06-15 DOI: 10.19026/rjaset.17.6044
Mohammad Dashti Javan, Kambiz Shojaee Gandeshtani, Seyed Ehsan Aghakouchaki Hosseini
Aim of this study is to present two optimal methods for adjusting parameters of PID controllers using simulated annealing (SA) and particle swarm optimization (PSO) algorithms to achieve the desired goal intended for application of these controllers. Through adding intelligent techniques to the SA algorithm, it will lead to a higher speed and the reduction of the error in the PID controller. Available rules for setting PID parameters are commonly trial and error which involve various issues like being very time consuming, imprecise and facing a significant number of errors. Using performance measurement criteria and integrating them, an attainable method has been presented for setting these parameters which has a very high accuracy as wells as a significant speed, with a very low rate of error. Results obtained in this research demonstrate a considerable efficiency compared with that of other proposed methodologies
本研究的目的是提出两种使用模拟退火(SA)和粒子群优化(PSO)算法调整PID控制器参数的最优方法,以达到这些控制器应用的预期目标。通过在SA算法中加入智能技术,可以提高PID控制器的速度,减小误差。可用于设置PID参数的规则通常是试错法,这涉及到各种问题,如非常耗时、不精确和面临大量错误。利用性能测量标准并对其进行综合,提出了一种可实现的参数设置方法,该方法具有非常高的精度和显著的速度,错误率非常低。与其他提出的方法相比,本研究的结果表明,该方法的效率相当高
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引用次数: 0
A Metaheuristic-based Fuzzy Controller for Semi-active Control of Magnetorheological Dampers 基于元启发式模糊控制器的磁流变阻尼器半主动控制
Pub Date : 2020-06-15 DOI: 10.19026/rjaset.17.6046
Mohammad Dashti Javan, Seyed Ehsan Aghakouchaki Hosseini, M. Menhaj
Aim of this study is to propose a control strategy based on Simulated Annealing (SA) as a metaheuristic algorithm and Fuzzy Logic Controller (FLC) for semi-active nonlinear control of structures equipped with Magnetorheological (MR) dampers to prevent damage from severe dynamic loads such as earthquakes. MR dampers as promising semi-active control mechanisms are focus of attention for reducing seismic response of structures in the world of structural engineering. A fuzzy controller is applied to establish interactive relationships between structural responses and input voltages to the MR damper. A modified simulated annealing algorithm is employed as an evolutionary algorithm to design the fuzzy controller, which is herein described as a Modified Simulated Annealing-Fuzzy Logic Controller (MSA-FLC). Results of numerical simulations demonstrated the efficiency of the proposed smart strategy compared to similar methodologies recommended by other researchers.
本研究的目的是提出一种基于模拟退火(SA)作为元启发式算法和模糊逻辑控制器(FLC)的半主动非线性控制策略,以防止具有磁流变(MR)阻尼器的结构受到地震等剧烈动力载荷的破坏。磁流变阻尼器作为一种极具发展前景的半主动控制机构,已成为结构工程界研究的热点。采用模糊控制器建立结构响应与磁流变阻尼器输入电压之间的交互关系。采用一种改进的模拟退火算法作为进化算法来设计模糊控制器,本文将其称为改进的模拟退火模糊控制器(MSA-FLC)。数值模拟结果表明,与其他研究人员推荐的类似方法相比,所提出的智能策略是有效的。
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引用次数: 0
A Portable Device for Wound Healing with Self-charging Capability 一种具有自充电功能的便携式伤口愈合装置
Pub Date : 2020-04-15 DOI: 10.19026/rjaset.17.6037
Md. Razu Miah, M. M. Ahmed
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引用次数: 0
Thermodynamic, Adsorption and Optimization Studies on Carbon Steel in Hydrochloric Acid Environment using Okro Leaf Extract as Corrosion Inhibitor 秋葵叶提取物缓蚀剂对碳钢在盐酸环境中的热力学、吸附及优化研究
Pub Date : 2020-04-15 DOI: 10.19026/rjaset.17.6038
A. Okewale, C. Owabor, J. G. James
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引用次数: 0
The Effectiveness of Heated Black Cotton Soil as a Low Calcium Pozzolanic Alumino-silicate Precursor in Lime-activated Stabilization of Black Cotton Soil for Use in Flood Prone Areas 加热后的黑棉土作为低钙硅酸盐铝前驱体在洪水易发地区黑棉土石灰活化稳定中的效果
Pub Date : 2020-04-15 DOI: 10.19026/rjaset.17.6039
C. Kabubo, S. Abuodha, Z. Gariy
The aim of this study was to investigate the effectiveness of heated black cotton soil as a precursor in lime-activated stabilization of black cotton soil in-place for use in flood-prone areas. Most methods used to improve expansive soils include the use of lime or lime-activated materials, cut to spoil followed by replacement and thermal treatment. Most lime treatment methods yield a material that cannot withstand high moisture levels and long flooding periods. Cut to spoil results in high costs and negative environmental consequences. Lime activated Ground Granulated Blast Furnace Slag (GGBS) has been found to be effective in flood conditions, but it has to be locally available. In this study, Unconfined Compressive Strength (UCS) tests were done on 50 mm diameter by 100 mm long stabilized soil specimens using various mixes of heated black cotton soil and lime which established an optimal mix of 14% heated black cotton soil at 400°C and 6% lime as the binders with 80% neat black cotton soil. Investigations of properties of this mix subjected to moist curing periods of 7, 14, 28, and 90 days followed by soaking them in water for 4 and 10 days after each curing period to simulate flash and severe flooding respectively were done. The durability reduction indices for each flooding scenario were computed. The mix yielded a strong durable product able to withstand flooding conditions. The heated black cotton soil at 400°C is, therefore, an effective low calcium aluminosilicate precursor with lime as the alkali activator.
本研究的目的是调查加热后的黑棉土作为石灰活化稳定黑棉土的前体在洪水易发地区使用的有效性。用于改善膨胀土的大多数方法包括使用石灰或石灰活化材料,切割到破坏,然后更换和热处理。大多数石灰处理方法产生的材料不能承受高湿度和长时间的浸水期。即弃即弃会导致高成本和负面的环境后果。石灰活化的磨粒高炉渣(GGBS)已被发现在洪水条件下是有效的,但它必须在当地可用。在本研究中,采用不同的加热黑棉土和石灰混合物,在直径为50 mm的100 mm长的稳定土试样上进行了无侧限抗压强度(UCS)试验,确定了400°C下加热黑棉土14%,石灰6%作为粘合剂,80%纯黑棉土的最佳混合物。分别进行了7、14、28、90天的湿养护和4、10天的水浸泡试验,模拟闪蒸和重度水浸。计算了不同洪水情景下的耐久性降低指数。这种混合物产生了一种坚固耐用的产品,能够承受洪水条件。因此,在400℃下加热的黑棉土是一种有效的低钙铝硅酸盐前驱体,石灰作为碱活化剂。
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引用次数: 0
Specialized Software for Computer-Aided Design of Electrical Systems of Vehicles 车辆电气系统计算机辅助设计专用软件
Pub Date : 2020-03-13 DOI: 10.36478/rjasci.2015.338.342
E. Fedorov, A. Ferenetz, V. Tereshchuk
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引用次数: 0
Numerical Study on Time Dependent Maxwell Nanofluid Slip Flow over Porous Stretching Surface with Chemical Reaction 随时间变化的麦克斯韦纳米流体在多孔拉伸表面的滑动流动及其化学反应的数值研究
Pub Date : 2020-02-15 DOI: 10.19026/rjaset.17.6031
M. Karim, M. A. Samad
The recent study deals with the numerical analysis of an unsteady Maxwell nanofluid flow passing through a porous stretch surface with slip boundary condition with chemical reaction effect using Buongiorno's mathematical model. The water based fluid and the gold nanoparticles (Au) are preferred for this study. The similarity transformations are applied to renovate the governing model equations into a set of ordinary non-linear differential equations. The solutions of the coupled non-linear dimensionless equations are numerically decoded using the Nachtsheim-Swigert shooting method together with the Runge-Kutta iterative technique for various values of the flow control parameters. In addition, the built-in function bvp4c of MATLAB is used to enhance the consistency of numerical results. The numerical results are graphically demonstrated and narrated from the physical point of view for the non-dimensional velocity, temperature and concentration profiles, as well as the local coefficient of skin friction, Nusselt number and Sherwood number for different parameters of materials, such as the volume fraction parameter, Deborah number, unsteadiness, slip, stretching, suction and chemical reaction parameters. It is witnessed that the heat transfer rate is widely controlled by the Deborah number for Au-water nanofluid. The outcomes of this analysis clearly indicate the considerable influence of the suction imposed in the model.
本文采用Buongiorno数学模型,对具有滑移边界条件和化学反应效应的多孔拉伸表面的非定常麦克斯韦纳米流体流动进行了数值分析。水基流体和金纳米颗粒(Au)是本研究的首选。利用相似变换将控制模型方程转化为一组普通非线性微分方程。采用Nachtsheim-Swigert射击法和龙格-库塔迭代法对流动控制参数的不同值进行了数值解码。此外,利用MATLAB的内置函数bvp4c增强了数值结果的一致性。从物理角度对数值结果进行了图形化的说明和叙述,对无量纲的速度、温度和浓度分布,以及不同材料参数(如体积分数参数、黛博拉数、非定常性、滑移、拉伸、吸力和化学反应参数)的局部摩擦系数、努塞尔数和舍伍德数进行了说明。研究表明,金-水纳米流体的换热速率普遍受黛博拉数的控制。这一分析的结果清楚地表明了模型中施加的吸力的相当大的影响。
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引用次数: 0
Material Selection Techniques of Water Supply Pipe based on Analytic Hierarchy Process 基于层次分析法的给水管道选材技术
Pub Date : 2020-02-15 DOI: 10.19026/rjaset.17.6029
Kamil Ali Jassim
The major problem of pipes used in Water Supply System (WSSs) were analyzed and the generally, used pipe and their major features were introduced in this study. The principles that the selection on Water Supply Pipes (WSP) should follow were pointed out. Analytic Hierarchy Process (AHP) using nine scaling was applied to optimize WSPs quantitatively. The optimal WSPs were determined according to the sorting result of comprehensive evaluation index. It could provide the reference to select the reasonable WSPs for the engineers.
分析了供水系统中管材存在的主要问题,介绍了常用的管材及其主要特点。指出了供水管道选型应遵循的原则。采用九标度层次分析法(AHP)对wsp进行定量优化。根据综合评价指标的排序结果确定最佳wsp。为工程人员选择合理的wsp提供参考。
{"title":"Material Selection Techniques of Water Supply Pipe based on Analytic Hierarchy Process","authors":"Kamil Ali Jassim","doi":"10.19026/rjaset.17.6029","DOIUrl":"https://doi.org/10.19026/rjaset.17.6029","url":null,"abstract":"The major problem of pipes used in Water Supply System (WSSs) were analyzed and the generally, used pipe and their major features were introduced in this study. The principles that the selection on Water Supply Pipes (WSP) should follow were pointed out. Analytic Hierarchy Process (AHP) using nine scaling was applied to optimize WSPs quantitatively. The optimal WSPs were determined according to the sorting result of comprehensive evaluation index. It could provide the reference to select the reasonable WSPs for the engineers.","PeriodicalId":21010,"journal":{"name":"Research Journal of Applied Sciences, Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76562423","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
Pull-out Resistance Parallel to Grain of Threaded Steel Rod Glued-in Glubam with Edge Distance Variation 边距变化下螺纹钢条平行于晶粒的拉出阻力
Pub Date : 2020-02-15 DOI: 10.19026/rjaset.17.6027
K. Karyadi, Bela Prayogo, N. Nindyawati, P. B. Susanto
: This study aimed to obtain the pull-out resistance parallel to the grain of the threaded steel rod glued-in glubam with various edge distances. The wood structures, both for connection and for reinforcement, used glued-in rods connection. However, there was no research on the application of glued-in-rod into the connection of structural elements from glued laminated bamboo (glubam) due to lack of information on the basic characteristics of the glued-in rod on laminated bamboo. This experiment tested the pull-out resistance and stiffness of the threaded steel rod bounded parallel to the grain in laminated bamboo with varying edge distances. The dimension of laminated bamboo specimens were100 × 100 × 100 mm, the threaded steel rod diameter was 10 mm, the drill hole diameter was 14 mm and this research used sikadur 732 as the adhesive. This experiment made eight various edge distances: 1d; 1.5d; 2d; 2.5d; 3d; 3.5d; 4d; and 4.5d, with d as the threaded steel rod diameter and made five replicas of each variation. The results showed that the 3d edge distance or greater had the constant pull-out resistance while less than 3d edge distance had less pull-out resistance. The slip modulus for the threaded steel rod glued-in glubam in this study was not influenced by edge distance with a range 3.732 kN/mm to 7.768 kN/mm.
本研究的目的是获得不同边距下平行于螺纹钢杆胶芯的拔出阻力。木结构的连接和加固均采用胶合杆连接。然而,由于缺乏对竹材粘接杆的基本特性的了解,尚无将粘接杆应用于胶合竹材结构构件连接的研究。本实验测试了不同边沿距离下,竹材层合材料中平行于纹路的螺纹钢杆的抗拔性和刚度。竹材层合试件尺寸为100 × 100 × 100 mm,螺纹钢杆直径为10 mm,钻孔直径为14 mm,胶粘剂为sikadur 732。本实验制作了8种不同的边距:1d;1.5 d;2 d;2.5 d;3 d;3.5 d;4 d;4.5d,以d为螺纹钢杆直径,每个变体制作5个副本。结果表明,三维边缘距离大于等于三维边缘距离时,拉出阻力恒定,小于三维边缘距离时,拉出阻力较小。本研究螺纹钢棒胶合板的滑移模量不受边距的影响,范围为3.732 ~ 7.768 kN/mm。
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引用次数: 3
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Research Journal of Applied Sciences, Engineering and Technology
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