journal of Artificial Intelligence in Electrical Engineering: 4 (18)

Open Access Article

1 - Neural Controller Design for Suspension Systems

The main problem of vehicle vibration comes from road roughness. An active suspension systempossesses the ability to reduce acceleration of sprung mass continuously as well as to minimizesuspension deflection, which results in improvement of tire grip with the road surf More

The main problem of vehicle vibration comes from road roughness. An active suspension systempossesses the ability to reduce acceleration of sprung mass continuously as well as to minimizesuspension deflection, which results in improvement of tire grip with the road surface. Thus, braketraction control and vehicle maneuverability can be improved consider ably .This study developeda new active suspension system for a quarter-car model. The designed system is based on neuralnetwork controller with an input as a regressor and it provided through a lag network thatincludes reference input , system output and control signal system to the previous sate. In thispaper, the system is based on neural network controller that is a regressor input provided througha lag network, including reference input, system output and control signal to previous state. Theneural network outputs are the same control signals applied to the suspension system. Feedbacksystem is taken as the output of the displacement body and is applied to lag network. Roughness ofthe road surface is considered as a reference input. To train, the neural network uses different ideaby introducing a cost function for the system and optimizing it, the best coefficients are selectedfor the neural network. Manuscript profile

Open Access Article

2 - Detection of Cardiac Hypertrophy by RVM and SVM Algorithms
fereshte morsali

The meaning of the hypertropy word is the increasing size.Heart hypertropy is symptoms of increase the thickness of the heart muscle that the left ventricular hypertrophy of them is the most common.The causes of hypertrophy heart disease are high blood pressure , aortic More

The meaning of the hypertropy word is the increasing size.Heart hypertropy is symptoms of increase the thickness of the heart muscle that the left ventricular hypertrophy of them is the most common.The causes of hypertrophy heart disease are high blood pressure , aortic valve stenosis and sport activities respectively. Assessment of that by using ECG signal analysis is essential Because the risk of heart disease, ventricular hypertrophy increase the timely diagnosis The ECG signal demonstrate heart electric activities and include some characteristic points such as P wave , QRS complex and the T wave is formed. In this thesis , an algorithm has been presented for assessment of diagnosis of ventricular hypertrophy . In The presented algorithm first picks of ECG signal has been assessed then a high degree of statistical information such as skewness،kurtosis،R peak height and cumulants also have been used . Manuscript profile

Open Access Article

3 - Gait Generation for a Bipedal System By Morris-Lecar Central Pattern Generator
sahar Farshbaf Rashidi Mohammad-Reza Sayyed Noorani Maryam Shoaran Ahmad Ghanbari

The ability to move in complex environments is one of the most important features of humans and animals. In this work, we exploit a bio-inspired method to generate different gaits in a bipedal locomotion system. We use the 4-cell CPG model developed by Pinto [21]. This More

The ability to move in complex environments is one of the most important features of humans and animals. In this work, we exploit a bio-inspired method to generate different gaits in a bipedal locomotion system. We use the 4-cell CPG model developed by Pinto [21]. This model has been established on symmetric coupling between the cells which are responsible for generating oscillatory signals. These signals are served as activation signals that sent to muscle groups. We used the Morris-Lecar equations as internal nonlinear dynamics of the cells, and considered a diffusive type to model couplings between the cells. We succeeded to obtain periodic solutions corresponding to the bipedal gaits of walk, run, two legged jump, and two legged hop, extracted from the 4-cell CPG model, by numerical simulations. In fact, gait generation is done by the adjustment of the coupling weights which are justifying correct phase differences between the oscillatory outputs of the cells. Moreover, in order to optimize the performance of the produced gaits, a non-dominated sorting genetic algorithm is utilized to adjust the coupling weights. Manuscript profile

Open Access Article

4 - Proposing an Efficient Software-Based Method for Enhancing the Reliability of Critical Application Robot

Robots play such remarkable roles in humans’ modern lives that performing many tasks without them isimpossible. Using robotic systems is gradually increasing the tasks allocated to them and they are becomingmore complex and critical. Software reliability is one of More

Robots play such remarkable roles in humans’ modern lives that performing many tasks without them isimpossible. Using robotic systems is gradually increasing the tasks allocated to them and they are becomingmore complex and critical. Software reliability is one of the most significant requirements of robots. Forenhancing reliability, systems should be inherently designed to be tolerable of soft errors. In this study, viasoftware, a method was proposed to enhance the reliability of the software embedded within robots againstsoft errors with minimum efficiency overhead. In as much as the research method was based on experiment,a set of programs was used as benchmarks. Indeed, errors were injected at the execution time of programsfor evaluating them. The data related to the execution behavior of the programs were accumulated and thenwere analyzed. Simplescaller simulation software was used for investigating program behavior in thepresence of the injected error. [2] Manuscript profile

Open Access Article

5 - Modeling of Nonlinear Systems with Friction Structure Using Multivariable Taylor Series Expansion

The major aim of this article is modeling of nonlinear systems with friction structure that, thismethod is essentially extended based on taylore expansion polynomial. So in this study, thetaylore expansion was extended in the generalized form for the differential equati More

The major aim of this article is modeling of nonlinear systems with friction structure that, thismethod is essentially extended based on taylore expansion polynomial. So in this study, thetaylore expansion was extended in the generalized form for the differential equations of the statespaceform. The proposed structure is based on multi independent variables taylore extended.According to the proposed method, in order to extract state-space form modeling, it is needed tosome samples of the measured value of system states and/or their combination. Then, the matrixof measured values and response vectors of derived states were forming by these measured valueof system states. By use of the presented equations and the measured values, the coefficients ofpolynomials were calculated as the model of state-space of studied nonlinear system. The resultof proposed simulation using proposed algorithm show, that it is importable having anindependent information system under test to system identification. A few suggestion wereproposed to decrease of the dependence of the measured samples, the results of algorithm withdifferent parameters show that proposed algorithm perform better. Of course in during theevaluation of algorithm, the results of different experimental were used. Manuscript profile

Open Access Article

6 - Place Finding and Optimizing the Determination of Production Units Dynamically for Providing the Electricity and Heat in Industrial City

In this article the place and capacity of combined heat and power [CHP] prediction unit wasdetermined dynamically with use of modified particle swarm optimization (MPSO). It was done inoptimization palace and with a capacity of CHP as a production resource with the aim More

In this article the place and capacity of combined heat and power [CHP] prediction unit wasdetermined dynamically with use of modified particle swarm optimization (MPSO). It was done inoptimization palace and with a capacity of CHP as a production resource with the aim to increasethe reliability capacity. Decrease the loss and provide the electrical and thermal energies ofindustrial city. The function of the optimization to the interest of CHP usage was described on itscost. It was considered as the cost of investments, operation, and Repair and keeping the CHPunits in the function. It was proposed that load distribution and limits of CHP production be seenas units’ condition as optimization issue condition. The problem was described as dynamicprogramming and it was used based on the interests of programming and inflation annually in thedetermined and thermal energies’ price. The simulation results show the positive effects of CHPunits in the electrical energy production of industrial city. Manuscript profile

Open Access Article

7 - Proposing an Efficient Software-based Method to Enhance Reliability of Computer Systems against Soft Errors

In recent years, along with rapid developments in technology, computer systems haveincreasingly become more integrated and more modular. Indeed, the reliability and efficiency ofcomputer systems are of high significance. Hence, the quantitative evaluation of the optimiz More

In recent years, along with rapid developments in technology, computer systems haveincreasingly become more integrated and more modular. Indeed, the reliability and efficiency ofcomputer systems are of high significance. Hence, the quantitative evaluation of the optimizationof reliability indexes in computer systems is considered to be a crucial issue. Reliabilityenhancement of computer systems against electromagnet and radiation interferences is a criticalrequirement in industries. Enhancing reliability can prevent system failure and fault and avoidfinancial and humanistic losses. Accordingly, software can play outstanding roles in reducing thenumber of errors in software programs. Consequently, software can enhance the reliability ofcomputer systems. In this paper, an efficient software-based method was proposed to enhance thereliability of computer systems against soft errors. The results of the experiments revealed that theproposed method had lower overhead, higher efficiency and higher error coverage than the earlier methods. Manuscript profile

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