the plant health status in the region is an important and challenging problem. Aiming at this problem, this paper based on the theory of acoustic emission plant disease stress theory, based on the wireless sensor netw...
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The self-start ability is the precondition for storage-based wind farm to be the black-start power source in local power grid. To avoid the strike to battery energy storage system which caused by energization of trans...
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ISBN:
(纸本)9781467391955
The self-start ability is the precondition for storage-based wind farm to be the black-start power source in local power grid. To avoid the strike to battery energy storage system which caused by energization of transformers, the no-load transformer energization control strategy during self-start process of storage-based wind farm is researched in this paper. The optimal starting control strategy for BESS is proposed by analyzing generation mechanism of magnetizing inrush current. Then equivalent model is established according to actual wind farm, simulation of proposed three different energization strategies has been made. Finally by comparison of simulation results, the energization control strategy applied for storagebased wind farm self-start is proposed.
in order to reduce the medical injury of patients in the transfer process, reduce the labor intensity of medical staff in the transfer process, through technological innovation and process re-engineering, the safe tra...
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Software Defined networking (SDN) decouples the control plane and the data plane and solves the difficulty of new services deployment. However, the threat of a single point of failure is also introduced at the same ti...
ISBN:
(数字)9781728143903
ISBN:
(纸本)9781728143910
Software Defined networking (SDN) decouples the control plane and the data plane and solves the difficulty of new services deployment. However, the threat of a single point of failure is also introduced at the same time. The attacker can launch DDoS attacks towards the controller through switches. In this paper, a DDoS attack detection method based on information entropy and deep learning is proposed. Firstly, suspicious traffic can be inspected through information entropy detection by the controller. Then, fine-grained packet-based detection is executed by the convolutional neural network (CNN) model to distinguish between normal traffic and attack traffic. Finally, the controller performs the defense strategy to intercept the attack. The experiments indicate that the accuracy of this method reaches 98.98%, which has the potential to detect DDoS attack traffic effectively in the SDN environment.
The research in wireless sensor networks (WSNs) has attracted a lot of attention in recent years. Sensor nodes are often placed in a hostile or dangerous environment where they are not physically protected. Hence, sen...
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An adaptive output feedback controller based on neural network(NN) is proposed, which forces a waterjet propulsion ship to track a desired course. A nonlinear course model of waterjet propulsion ship is proposed. The ...
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The aim of home automation is to make our lives easier and to improve the quality of life. The concept of Smart Homes builds on the progressing maturity of areas such as Artificial Intelligence and Natural Language Pr...
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Bionic prosthetic hands are essential for the disabled to deal with most affairs of life independently. The surface electromyography(sEMG) is considered as a developing vigorous solution to realize the artificial limb...
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Bionic prosthetic hands are essential for the disabled to deal with most affairs of life independently. The surface electromyography(sEMG) is considered as a developing vigorous solution to realize the artificial limb system. However, most of the present devices are irritating to the skin, high cost and power energy, complexity, unnatural, which limits their promotion. This paper proposed a real-time bionic mechanical arm control system, based on the large-area flexible electronic tattoo(E-tattoo) and combining differential feature convolutional neural network (CDF-CNN). Similar to the tattoo attached on the skin, the electrode allows complying with the skin deformation comfortably and accommodation the local strains, providing long-term and robust monitoring of sEMG signals. Benefited from the convenient and low-cost fabrication and transferring to the skin surface, the large-area E-tattoo electrodes were applied to alleviate the requirement of controlling the accurate position of traditional Ag/AgCl electrodes. Moreover, a "sEMG feature map" is proposed by combining differential feature (CDF) to extract deep abstract features to improve the recognition effect, achieving 97.63% on average when using only two channels to classify 8 gestures. The proposed system is efficient, comfortable, natural and low-cost, which will help to facilitate the development and application of sEMG prosthesis.
For the vibration control problem and potential energy harvesting performance of the suspension system, this paper proposes an active/semi-active vibration control strategy based on an electromagnetic damper (EMD). Th...
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The landing and taxiing lighting system of civil transport aircraft are used primarily to provide ground reference information during final approach, touchdown, ground roll, taxi, turnoff and takeoff, and to illuminat...
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The landing and taxiing lighting system of civil transport aircraft are used primarily to provide ground reference information during final approach, touchdown, ground roll, taxi, turnoff and takeoff, and to illuminate any major obstructions in the airplane’s approach glide path or on the runway at night. The landing and taxiing lighting system create a good visual environment for the flight crew to ensure that the flight crew can accurately and clearly judge the aircraft status of takeoff and landing in night and rough weather conditions. Reasonable landing and taxiing lighting design needs to follow the necessary design principles to improve the friendliness of the human-machine environment during the flight. Simultaneously, the landing and taxiing lighting evaluation is an effective supplementary means for discovering design defects. It can reduce the possibility of the existence or continuation of the development of potential accidents during the flight From the perspective of an engineering designer, this paper puts forward the principles and evaluation methods to be followed in the landing and taxiing lighting design of civil transport aircraft, which can provide certain guidance in the field of civil transport landing and taxiing lighting design.
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