This paper present the Load Frequency control (LFC) of four area hydrothermal interconnected power system by using Artificial Neural Network (ANN) and conventional PI control approach. Area-1 and area-2 consists of th...
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The upgrading China's economic and financial strength provides a solid foundation for the internationalization of the RMB. Non-equilibrium model of global economic development, lending crisis and the U.S. debt cri...
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the autonomous ground vehicle can drive itself without human intervention. However, the problem of the vehicle is that it heavily relies on the high cost devices such as 2D/3D lidars, radars, GPS/INS, computer cluster...
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ISBN:
(纸本)9781467308946;9788994364261
the autonomous ground vehicle can drive itself without human intervention. However, the problem of the vehicle is that it heavily relies on the high cost devices such as 2D/3D lidars, radars, GPS/INS, computer clusters, and etc. In addition, the perception capability is not reliable compared with the human. To abbreviate the problems, we propose the Cooperative Vehicle controlsystem (CVC). The Cooperative Vehicle controlsystem (CVC) is a system that supports autonomous maneuvering of a car to the target position through cooperation between in-vehicle controller and the vehicle control server. In this paper, we propose the cooperative framework and fusion map to reduce the costs of the sensors and to increase perception performance.
This paper aims to present the design of a cloud computing-based equipment monitoring system (EMS), called CCEMS, for the CNC machine tool industry to illustrate the paradigm shift of EMSs from basing on the Internet ...
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Ciphertext-Policy Attribute-base Encryption (C-PABE) is regarded as one of the most suitable technologies for data access control in cloud storage. In almost all existing C-PABE schemes, it is assumed that there is on...
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ISBN:
(纸本)9781457702952
Ciphertext-Policy Attribute-base Encryption (C-PABE) is regarded as one of the most suitable technologies for data access control in cloud storage. In almost all existing C-PABE schemes, it is assumed that there is only one authority in the system responsible for issuing attributes to the users. However, in many applications, there are multiple authorities co-exist in a system and each authority is able to issue attributes independently. In this paper, we design an access control framework for multi-authority systems and propose an efficient and secure multi-authority access control scheme for cloud storage. We first design an efficient multi-authority CP-ABE scheme that does not require a global authority and can support any LSSS access structure. Then, we prove its security in the random oracle model. We also propose a new technique to solve the attribute revocation problem in multi-authority CP-ABE systems. The analysis and simulation results show that our multi-authority access control scheme is scalable and efficient.
For biped climbing robots to climb poles, trusses or trees with dual grippers, it is required that the grippers are aligned with the target objects before they grasp for climbing or manipulating. However, this require...
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ISBN:
(纸本)9781467321273;9781467321259
For biped climbing robots to climb poles, trusses or trees with dual grippers, it is required that the grippers are aligned with the target objects before they grasp for climbing or manipulating. However, this requirement is difficult to meet in practice with programming control, teaching-and-playback, or remote control with a joystick, due to the mobility of the base gripper, the manufacturing and control errors of the robot, and other uncertainty. It is hence necessary and significant for the grippers to be autonomously aligned with the target under utilization of sensors. In this paper, we develop a sensing system by integrating multiple sensors including a camera, a laser scanning range finder and two ultrasonic distance sensors to detect the relative configuration of a gripper with respect to the target to grasp, and then present an algorithm based on the sensor information to adjust the gripper configuration for alignment with the grasping target. In the experiments with our biped climbing robot Climbot, the gripper can grasp a static pole autonomously and can even follow a moving pole. The effectiveness and real-time of the sensing system and the self-alignment algorithm have been verified by the experiments.
while the smart grid concept is beginning to achieve a degree of maturity, there are areas in which emerging trends imply significant impacts on utility systems and processes. In particular, controlsystem architectur...
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ISBN:
(纸本)9781467319355
while the smart grid concept is beginning to achieve a degree of maturity, there are areas in which emerging trends imply significant impacts on utility systems and processes. In particular, controlsystem architecture must still go through a degree of evolution to accommodate new models for systemcontrol, especially as the penetration of Renewable Energy Resources, Distributed Energy Resources, and smart load interactions reaches and surpasses critical thresholds.
Mobile cloud computing which combines mobile computing, mobile internet, and cloud computing, has become an important research area in the information technology since 2009. By introducing the concept and features of ...
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ISBN:
(纸本)9781467318556;9781467318570
Mobile cloud computing which combines mobile computing, mobile internet, and cloud computing, has become an important research area in the information technology since 2009. By introducing the concept and features of mobile cloud computing, we analyze the system structure of mobile cloud computing. Meanwhile, the security threats present in mobile cloud computing environment are given, and solutions for against the corresponding threat are introduced. Finally, an improved security service scheme is put forward to help realize the controllability, customizability and adaptability of the mobile cloud computing environment in this paper.
This paper deals with a new approach to robust control design for a class of nonlinearly affine controlsystems. The dynamical models under consideration are described by a special class of structured implicit differe...
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ISBN:
(纸本)9781467321686;9781467321709
This paper deals with a new approach to robust control design for a class of nonlinearly affine controlsystems. The dynamical models under consideration are described by a special class of structured implicit differential equations called semi-explicit differential-algebraic equations (of index one), in the presence of additive bounded uncertainties. The proposed robust feedback design procedure is based on an extended version of the classical invariant ellipsoid technique that we call the Attractive Ellipsoid (AE) method. The theoretic schemes elaborated in our contribution are illustrated by a simple computational example
Enhanced Physical Downlink control Channel (EPDCCH) is one of the most important technical improvements in 3GPP LTE-Advanced standards with respect to the new non-uniform network deployments. Frequency diversity as we...
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ISBN:
(纸本)9781457713798
Enhanced Physical Downlink control Channel (EPDCCH) is one of the most important technical improvements in 3GPP LTE-Advanced standards with respect to the new non-uniform network deployments. Frequency diversity as well as frequency selective scheduling gain together with beamforming gain is expected. In order to achieve frequency scheduling gain, the search space of EPDCCH should contain subcarriers associated with good channel quality. In this paper, we propose a modified search space mapping scheme that maximizes the frequency scheduling gain with given frequency resource. Simulation results shows proposed search space function is effective in improving the EPDCCH performance under frequency selective fading channels. Up to 5 dB signal-to-noise ratio (SNR) gain is observed compared with existing search space function.
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