the knowledge of a second language is an obligation in educational systems of the European Community for many years and the quality of teaching and learning, especially in Italy, could be largely improved for a better...
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Vehicle Platoon is the important technique for increasing the traffic capacity of road network safely. Our research group has been studying the velocity control model of the vehicle in the vehicle platoon. Previous st...
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this paper proposes a dynamic model for dielectric elastomer actuators (DEAs) based on the long-short term memory (LSTM) deep neural network. the fabrication of the DEA and the framework of the experimental platform a...
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ISBN:
(数字)9781728164793
ISBN:
(纸本)9781728164809
this paper proposes a dynamic model for dielectric elastomer actuators (DEAs) based on the long-short term memory (LSTM) deep neural network. the fabrication of the DEA and the framework of the experimental platform are introduced firstly. the behaviors of the DEA are analyzed through several sets of experiments, which shows the DEA has obvious memory behavior (i.e., the hysteresis behavior and creep behavior), where the hysteresis behavior is a symmetry and rate-dependence. Considering that the traditional neural network is difficult to describe the memory property, the LSTM deep neural network is constructed as the dynamic model of the DEA. then, such neural network is trained according to the experimental data. Finally, the comparation results of the experimental data and the model output verify the effectiveness as well as the generalization ability of the dynamic model.
the article is devoted to the problems of analysis of the informative part of acoustic signals in the UAV control system. A method of determining the frequency range of the informative part of a signal based on the es...
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Localization is the process of mapping and locating objects inside a closed or fixed bounded room. the process of localization is helpful in robotics as it allows the understanding of the environment around the robot....
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ISBN:
(纸本)9781538680759
Localization is the process of mapping and locating objects inside a closed or fixed bounded room. the process of localization is helpful in robotics as it allows the understanding of the environment around the robot. the localization technique which is helpful for the mapping of a room includes lidar and other mapping technique. the process of lidar mapping allows to have a better control and detailed analysis of objects, but this process is extremely difficult and costly. the process of mapping is thus replaced with a GPS system. the present GPS system is not capable enough to give a very high and precise location as there are error issues withthese systems. the presented paper shows a very high and precise system to display and function the location mapping and localization process withthe use of wifi network and implementation on mobile robotics. the presented work used DV-Hop Algorithm for the process of finding the location of the robot.
Motor current signature analysis and vibration analysis techniques have been used for the identification and classification of faults in high power induction motors. Fast fourier transform has been applied to the time...
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ISBN:
(数字)9781728189819
ISBN:
(纸本)9781728189826
Motor current signature analysis and vibration analysis techniques have been used for the identification and classification of faults in high power induction motors. Fast fourier transform has been applied to the time domain stator current signal and vibration signal of the induction motor. A comparison of the frequency spectrum has been performed between healthy and unhealthy motor current and vibration signals. Five different machine learning classification algorithms have been used to evaluate the performance of the induction motor. the developed system provides a cost-effective and real-time alternative to the conventional off-line induction motor condition monitoring systems.
the mobile manipulators have become more and more popular because of its flexible operation space. However, how to protect the people on the mobile rescue robot to against the impact from unconstructed environments li...
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ISBN:
(数字)9781728164793
ISBN:
(纸本)9781728164809
the mobile manipulators have become more and more popular because of its flexible operation space. However, how to protect the people on the mobile rescue robot to against the impact from unconstructed environments like the battle field or disaster is still an underexplored problem. the stability control problem is addressed in this article by devising a disturbances rejection method for medical rescue robot. We indicate that the designed method keep the posture of the end of the manipulator stable by controlling the motors of pitching direction and rolling direction. the vertical vibration can be weakened by the damping system of the rescue robot, such as spring, damper and damping materials. the wounded carried by manipulator of the rescue robot may not suffer secondary damage as the end of the manipulator always remain stable. Simulations implementations are performed to validate the proposed method and performance metric with a mobile rescuing manipulator.
Given the trajectory of the industrial robot in Cartesian space, the existing methods only consider the kinematic constraints when optimizing the time trajectory planning, and ignore the maximum driving ability of the...
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ISBN:
(数字)9781728198880
ISBN:
(纸本)9781728198897
Given the trajectory of the industrial robot in Cartesian space, the existing methods only consider the kinematic constraints when optimizing the time trajectory planning, and ignore the maximum driving ability of the motor, which is likely to cause an overrun alarm and greatly reduce the trajectory accuracy. therefore, this paper studies the timeoptimal trajectory planning algorithm based on dynamics. Firstly, the algorithm discretizes the path, calculates the Cartesian coordinates of each discrete point and the differential about the path length. then, this algorithm considers the constraints of dynamics and kinematics, uses the principle of linear programming, recursively calculates the upper limit value of speed and the maximum acceleration value at each discrete point, and calculates the speed value at each discrete point and keeps it within its allowable ranges. Finally, this algorithm uses the speed to calculate the corresponding time of each discrete point, and according to the interpolation period, outputs the path position of each period, the position and orientation in the Cartesian space and joint parameters. the MATLAB program is written to verify the feasibility and efficiency of the algorithm.
Educational Data Mining (EDM) is a research area which applies machine learning, data mining and statistical techniques to different types of data that come from educational settings. Student modeling is one of EDM ap...
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AB class power amplifier (PA) is designed for long range wide area monitoring and control of urban farm. the PA is part of transceiver device which operates on 2.4 GHz frequency and 22 MHz bandwidth. the design is car...
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