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24,092 Article Results

Engine Speed Control of Excavator With PID Method

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3398
Jun Zhang , Shengjie Jiao , Guimao Si , Xuepeng Cao , Min Ye , Jinping Li , Xinxin Xu , Daopei Zhang
Distinction work task power-matching control strategy was adapted to excavator for improving fuel efficiency; the accuracy of rotate engine speed at each work task was core to excavator for saving energy. 21t model excavator ZG3210-9 was taken as the study object to analyze the rotate speed setting and control method, linear position feedback throttle motor was employed to control the governor of engine to adjust rotate speed. Improved double closed loop PID method was adapted to control the engine, feedback of rotate speed and throttle position was taken as the input of the PID control mode. Control system was designed in CoDeSys platform with G16 controller, throttle motor control experiment and engine auto control experiment were carried on the excavator for tuning PID parameters. The result indicated that the double closed-loop PID method can take control and set the engine rotate speed automatically with the maximum error of 8 rpm. The linear model between throttle feedback position and rotate speed is established, which provides the control basis for dynamic energy saving of excavator. DOI : http://dx.doi.org/10.11591/telkomnika.v12i5.4917
Volume: 12
Issue: 5
Page: 3423-3430
Publish at: 2014-05-01

High Voltage Security System Design and Testing of Electric Car

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3428
Peng Hailan , Jiang Zhilong
Safety design of high voltage part is the foundation of the whole automobile design; it is based on safety design requirements of the electric car, and the security function of hardware. The design the different functions of hardware modules are presented, through circuit principle diagram layout of PCB, and circuit board is made, the systems hardware test board is design according to the functional test of the system. Test results show that relative errors between the measurement of insulation resistance value of the safety system and the theoretical value is only 0.3%, thus the rationality of the design calculation model of the insulation resistance is verified. The response times of DC (direct current) contactor are higher than the national standard requirements, so the system security design meets the design requirements. DOI : http://dx.doi.org/10.11591/telkomnika.v12i5.4899
Volume: 12
Issue: 5
Page: 3678-3683
Publish at: 2014-05-01

Application of Distributed Fiber Temperature Detection Technology in the Shaft Freezing Restoration Project

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3460
Zheng Xiao Liang , Hu Ye-lin , Shen Hua-jun , Xie Hong-zhi , Dou An-feng , Yu Jin-chang
According to the particularity of the restoration project of using freezing method to conduct shaft-forming well wall, the monitoring of the conventional hydrological hole and thermometer hole, new means of detection are added, and distributed fiber temperature detection technology is used to check the temperature of each longitudinal freezer. The principle, composition, detection method and temperature measuring optical cable structure of the distributed fiber temperature detection system are introduced in detail. Field measured data is given, which has large data size and can reflect the actual development status of freezing wall comprehensively and intuitively compared with the traditional thermometer hole data. Data analysis provides the basis for guiding the freeze construction being carried out safely and smoothly. The structure of system is simple and flexible, and the detection method has a certain promotional value. DOI : http://dx.doi.org/10.11591/telkomnika.v12i5.4436
Volume: 12
Issue: 5
Page: 3936-3942
Publish at: 2014-05-01

Transformer Fault Diagnosis Method Based on Information Fusion

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3421
Xin bo Huang , Tong Song , Ya na Wang
According to the characteristics and current situation of power transformer fault diagnosis , information fusion technology is introduced into this field of fault diagnosis of power transformer. By studying the general framework of information fusion fault diagnosis process, combined with the dissolved gas and electrical tests data,it is proposed a fault diagnosis method of information fusion which is based on fuzzy coding boundary and Bias regularization Levenberg Marquardt (LM) network. The algorithm uses a Bias approach to determine the hyper parameters, making the neural network adaptively adjust the parameter in the training process and getting the optimization parameters of the objective function . Combined with fuzzy coding boundary for feature attribute reduction to improve the accuracy of fault diagnosis .The contrast analysis of twice fusion results shows that the  fault diagnosis model of the transformer accurate rate is 89.83%. Finally , it proves the validity and practicability of this new diagnosis method. DOI : http://dx.doi.org/10.11591/telkomnika.v12i5.4054
Volume: 12
Issue: 5
Page: 3616-3624
Publish at: 2014-05-01

Research on Real-Time Optimal Path Algorithm of Urban Transport

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3408
Jie Zhang , Jianchun Li , Xiaoyan Fan , Zhuo Deng
Based on the ant colony algorithm, urban real-time traffic optimal path algorithm was designed through restricting search area and search direction of ant colony system, making the real-time traffic and distance as the optimal path weights and regarding intersection turning as the impact of weight value combined with Chinese situation. The algorithm could calculate the optimal path through algorithm complexity test. We obtained a traffic optimal path with timeliness and practical value combined with ant colony algorithm considering multiple parameters.The obtained path enabled user to reach destination within a short time and with the least fuel through actual traffic test. It was regarded as the optimal path. DOI : http://dx.doi.org/10.11591/telkomnika.v12i5.3535
Volume: 12
Issue: 5
Page: 3515-3520
Publish at: 2014-05-01

An effective method to improve Electronic Equipment Condition Monitoring Based on KPCA-EDA and MMSH-SVDD

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3467
Shen Yang , Chen Meng , Meng Lv
In order to improve the validity of electronic equipment condition monitoring, overcome the shortage of normal KPCA (Kernel Principal Component Analysis) and SVDD (Support Vector Data Description) monitoring model, a method on electronic equipment condition monitoring based on KPCA-EDA (KPCA- Estimation of Distribution Algorithm ) and MMSH-SVDD (Maximal Margin Separating Hypersphere SVDD Mode ) is put forward. Firstly, the feature of original monitoring data is extracted by KPCA-EDA algorithm, and a group of features with enough state identifying information are obtained; then the MMSH-SVDD model is trained by the normal state and a little bit of fault state features, and the unknown state feature is applied to the trained model; Finally, a filter circuit is taken as an example in simulations, the result shows that this method is the effective method improve the performance of electronic equipment condition monitoring. DOI : http://dx.doi.org/10.11591/telkomnika.v12i5.4332
Volume: 12
Issue: 5
Page: 3994-4001
Publish at: 2014-05-01

Cost-Emission Scheduling under Uncertainty in a Smart Grid with Wind Power and PHEVs

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3396
Zhang Xiaohua , Xie Jun , Li Zhenkun
The rapid development of plug-in electric vehicles (PHEVs) and wind power brings new challenges to power system security and economic operation. Traditional deterministic models fail to capture their extra characteristics. In this paper, PHEVs, wind power and thermal units are studied. The scheduling model with PHEVs and wind power is more complex, which minimizes the cost-emission while considering the uncertainty of wind power and load, the smart charging/discharging of PHEVs, the coordination of wind power and PHEVs. The multi-scenario simulation is presented in the random variable discretization. Numbers of representative scenarios is chosen, so that the original objective of the smart grid is within an acceptable level. Then the multi-agent system(MAS)technology is proposed to divided a day is into 24 time intervals, and each time interval is managed by a work agent to produce a solution set for the time interval. The wind power, PHEVs and thermal units are coordinated by the work agent. 24 work agents are managed a coordination agent that would coordinate the solutions of the work agents. Finally, a smart grid of 10 thermal units, a wind farm and PHEVs are used to demonstrate the effective of the proposed model. The results show that the smart grid can use the wind power and PHEVs most effectively, can greatly cut the operation cost and carbon emission. By the tradeoff between the weight factor of cost and emission, the balance of cost and emission can reach. DOI : http://dx.doi.org/10.11591/telkomnika.v12i5.4953
Volume: 12
Issue: 5
Page: 3407-3415
Publish at: 2014-05-01

Emergency Vehicle oriented Traffic Priority Control Strategy at Intersection in Congested Urban Area

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3386
Yao Jiao
Efficient and safe traffic control strategy for emergency vehicle can reduce its travel time and avoid secondary accident. Based on the analysis of its requirement and object, we proposed a novel control strategy at intersection according to the status of emergency vehicle, which can be divided into three parts: “approaching”, “passing “and “recovering”, Furthermore potential safety risk caused by emergency vehicle was also taken into account when making control strategy.From the case study we conclude that with control strategy in this paper delay of emergency vehicle can be sharply decreased by 68.63% with only 19.86% loss of average delay of background traffic.  DOI : http://dx.doi.org/10.11591/telkomnika.v12i5.4928 
Volume: 12
Issue: 5
Page: 3313-3322
Publish at: 2014-05-01

Magnetic Field Calculation under Normal and Abnormal Conditions of Overhead Transmission Lines

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3393
Nagat M. K. Abdel-Gawad , Adel Z. El Dein , Mohamed Magdy
Ground level magnetic field from overhead transmission lines (OHTLs) is of increasingly important considerations in several research areas due to their harmful effect on human health and environment. This paper computes the ground level magnetic field, under normal and abnormal conditions of Egyptian 500-kV single circuit transmission line, in three dimension (3-D) coordinates by using 3-D integration technique. Abnormal conditions include symmetric fault, un-symmetric faults, direct stroke, and indirect stroke on the OHTL. Where, ATP software is used to simulate the OHTL under all faulty and lightning conditions. Varying time magnetic fields under normal and abnormal conditions, at certain points that located at mid-span, tower height and right-of-way (ROW), are also computed that to indicate the worst case. DOI : http://dx.doi.org/10.11591/telkomnika.v12i5.5151
Volume: 12
Issue: 5
Page: 3381-3391
Publish at: 2014-05-01

Advances on CMOS Shift Registers for Digital Data Storage

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3451
Mohammad Arif Sobhan Bhuiyan , Hasrul Nisham Bin Rosly , Mamun bin Ibne Reaz , Khairun Nisa Minhad , Hafizah Husain
The shift register is the heart of the current digital data storage system. Current trends of wireless device designs are to balance the power consumption, cost and portability of the device. The worldwide research is giving emphasize on increasing the amount of memory at minimum possible space to reduce the overall size of the devices now a days. This paper reports a detailed survey on different types of shift registers in CMOS technology from the performance, design and application point of view. It also discusses the technologies available for the design of shift registers with their merits and demerits. This survey will act as a reference for the scientists to design the high-performance memory module. DOI : http://dx.doi.org/10.11591/telkomnika.v12i5.5207
Volume: 12
Issue: 5
Page: 38493862
Publish at: 2014-05-01

Optimal Location of Thyristor-controlled-series-capacitor using Min Cut Algorithm

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3425
ThanhLong Duong , JianGang Yao , Kang Tong
Existence of many different Operators in the new electricity has brought many challenges in the system operation and control to obtain minimum generation cost and security. With the growing demand of electricity in the competitive electricity market environment, one or more transmission lines could be overloaded, therefore causing congestion. The congestion can be eliminated /alleviated by improving transfer capability of the network. Thyristor controlled series compensators (TCSC), with its ability to directly control the power flow can be very effective to improve the operation of transmission network. This paper describes an approach for determining the most suitable locations for installing TCSC devices in order to eliminate line overloads and minimize generation costs. The proposed approach is based on the minimum cut methodology that reduces the search space and using benefit index to decide on the best locations for the TCSC. The 5-bus, IEEE 14-bus and 30-bus test systems are used to demonstrate the proposed approach. Results show that the proposed method is capable of finding the best location for TCSC installation to minimize total costs. DOI : http://dx.doi.org/10.11591/telkomnika.v12i5.4423
Volume: 12
Issue: 5
Page: 3649-3661
Publish at: 2014-05-01

Application of Remote Sensing Axis Line Method in Xiaomiaohong Creek

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3387
Yan Gu , Ming-jie Gong , Huan Li
The traditional researches on evolution of tidal creek have been limited for the reason that precise measured data be required. On the other hand, the Remote Sensing Axis Line method (RSAL) can monitor the evolution of the tidal creek accuratly and promptly. This paper extracted the Axis lines of Xiaomiaohong creek based on one MSS image and six TM images in the period of 1979, 1987, 1989, 1993, 1995, 2003 and 2009 with RSAL and took a further analysis. The results showed that: On the basis of overlaying generated axis line and DEM (digital elevation model) data both acquired in 2003, axis line can be the substitution of the thalweg line because of similar trend and minor deviation of above two kinds of lines, which is revealed that RSAL was serviceable and effective to understand dynamic evolution of tidal creeks quickly and accurately. The upper section of Xiaomiaohong creek was depositing and growing all the time and subordinate braches were gradually disappeared, the south side of middle section possessed relatively stronger hydrodynamic force and much more subordinate branches were developing. DOI : http://dx.doi.org/10.11591/telkomnika.v12i5.4929
Volume: 12
Issue: 5
Page: 3323-3330
Publish at: 2014-05-01

Fuzzy Control Analysis with Back-EMF in Washing Machines

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3448
Min-yan DI
This paper puts forward a method of detecting material and quantity of the cloth in washing machine based on detection motor back EMF, not only can obtain the pulse number of reporting the information quality and quantity of the cloth, but also can collect information of pulse width, the pulse cycle , help to improve the detection accuracy of the material and quantity of the cloth. On this basis, This article also gives a specific control rules of the fuzzy control of automatic washing machine , With this fuzzy control rule table, off-line Fuzzy control response can be obtained. Finally enquiry form  used to Program of assembly language, determined material and quantity and dirty degree of the cloth, to achieve the best effect of clothes washing by selecting water level, flow intensity, put the amount of detergent and washing time DOI : http://dx.doi.org/10.11591/telkomnika.v12i5.5098
Volume: 12
Issue: 5
Page: 3825-3831
Publish at: 2014-05-01

Research on Software Fault Distribution for Web Application

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3423
Wanjiang Han , Lixin Jiang , Sun Yi , Li Ye , Han Xiao , Weijian Li , Liu Chi
This paper studies multiple software faultdistribution model, then extends the ideas of software fault estimation based on the analysis of a large number of projectfault data.Itpresents the estimation model of software faultsdistribution for Web Application, which refers to the G-O model and Rayleigh model. Thispaper fits the faultprediction model and showsthe steps to determine the relevant parameters.Firstly, estimating the probability of finding a faultaccording to similar project data.Then estimating the total number offaults. Software fault estimation model has certain directive significance to the prediction and planning projects.Experiments show that the model has great potential to predictsoftware fault. DOI : http://dx.doi.org/10.11591/telkomnika.v12i5.5116
Volume: 12
Issue: 5
Page: 3634-3641
Publish at: 2014-05-01

Cloth Simulation Based on Simplified Mass-Spring Model

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3446
Wenqing Huang , Jing Hu , Keqiang Yu , Yaming Wang , Mingfeng Jiang
The technology of cloth simulation can be used in many fields. Based on physical model of cloth simulation, we established the simulation system with a simplified mass-spring model. A modified implicit method was proposed in order to produces realistic animation. This method can increase the computational efficiency to a large extent and is easy to be realized with a stable and good real-time performance. Furthermore, the approach of AABB (Axis-Aligned Bounding Boxes) is adopted for the detection of cloth collision. Experimental results show that our system can give excellent real-time effect of cloth simulation DOI : http://dx.doi.org/10.11591/telkomnika.v12i5.5124
Volume: 12
Issue: 5
Page: 3811-3817
Publish at: 2014-05-01
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