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The paper proposed a simulation of multi-source information weighted fusion algorithm based on the prior information of communication sensor. The weights set strategy and application prospect of the algorithm is also discussed. The Integrated Navigation System (INS in brief) is a kind of navigation system with multiple systems, multi-function, high performance and reliability. Its essence is to make...
The advances in digital image processing technology, the increasing availability of computing resources and highdefinition resolution cameras have resulted in a great deal of interest in object detection algorithms in defects inspection of industrial products. This paper proposes a complete framework to cope with the surface defects detection of mobile phone panel workpieces. The proposed method has...
Image blurriness or definition is an important indicator to assess the quality of digital image. The objective no-reference image blur metric plays significant roles in the design and optimization of visual perception-based auto-focus systems as well as image acquisition, transmission, enhancement, restoration and compression algorithms. In this paper, we proposed a novel no-reference image blur metric...
In the electromagnetic coupling system, the sinusoidal coupling signal extraction is crucial. It will be difficult to extract the signal parameters because of the possibility of signal frequency offset and saturation. Hence, this paper proposes an algorithm combined Artificial Bee Colony algorithm (ABC) and the Levenberg-Marquardt(LM) algorithm to extract sinusoidal parameters from saturation sinusoidal...
Non-Local means (NL-Means) algorithm is an effective denoising algorithm, but very dependent on the measured non-local similarity image blocks. In order to obtain as many similar image blocks as possible, we propose the Discrete Fourier Transform of local Gabor feature (LGF-DFT) which is rotation invariant and noise robust to measure the image blocks similarity, and fully utilize structural information...
Minimizing the flow completion times (FCTs) is a challenging work in information-agnostic datacenter networks, and a general approach is to configure multiple demotion thresholds so as to decrease the priorities of long flows, which can alleviate the impact on short flows, but how to appropriately set up these thresholds has not been addressed. In this paper, we firstly employ a queuing model to analyze...
Accurate prediction of model parameters and state of charge (SOC) is crucial for lithium-ion batteries, especially for those used in wireless charging systems. For example, estimation of the battery model parameters is beneficial to adjust the system operation frequency, improving the system efficiency. In addition, SOC prediction can guarantee the battery safety by preventing the battery from over-charging,...
Trying to PM2.s as the independent variable to establish the “beam-diffuse radiation separated” model, factor analysis showed that, PM2.5 and diffuse ratio have positive correlation. Based on the clearness index Kt and sunshine hours n/N as variables, the polynomial model and the BP neural network algorithm model containing PM2.5 as the independent variable is proposed, the polynomial model is fitted...
This paper explores the impact of the output impedance on the power-sharing stability between parallelized microgrid inverters (MGIs) operating with virtual synchronous generator (VSG) method. In these systems, a virtual output impedance is usually added to the control loop of each MGI to improve the power sharing, regardless of line impedance unbalances. The time derivative of the MGI output current...
Seal is one of the most important characteristics for cylinders and suitable seal configuration will guarantee the long life cycle of the seal and the cylinder. Experiment is the only way which can demonstrate the best seal configuration in applications. In this paper, one approach is brought forward for testing the seal performance of cylinders with different seals configurations at the same load...
With a number of large centralized photovoltaic power plants connected to the grid. Junction photovoltaic power plants and power generation systems and power grid, which is the point of common coupling. Often due to the unstable output of photovoltaic power plants caused by abnormal voltage and outlets. So, PCC point becomes the measure of a grid system is stable and reliable vital sign. Generally,...
Islanding detection is a distributed generation system is an important protective measure. Islanding detection is generally divided into two types, one is the active islanding detection, and the other is passive islanding detection. Islanding detection of power quality disturbance signal will always cause pollution; passive islanding detection has a long detection time and a large dead zone. Various...
It is currently highly demanded to achieve a home health examination device for multiple physiological data and remote monitoring. In this paper, we propose a scheme to detect and transmit multiple physiological data, and then display them on smart devices by the Bluetooth. Further, these messages are sent to the web server for remote monitoring based on the Internet. The mobile terminal programs...
In electro-magnetic coupling sensing system, the amplitude of the coupling signal should be obtained by AC signal sampling. We use the direct sampling and the signal processing calculation method to determine the signal amplitude. The coupling sensitivity of electro-magnetic coupling sinusoidal signal is related to the frequency of signal. When the frequency of signal increases, the sampling rate...
So far, driving wireless capsule endoscope(WCE) in the intestine forward from the outside of the body is challenging due to its soft, winding and smooth properties. A potential approach to propelling WCE forward is rotating it by magnetic fields. To investigate WCE's efficiency of translational movement when it was rotating, nine capsules mounted spirals with different diameters and lead angles were...
With the development of mobile Internet and Smart home technology, remote intelligent meter reading has become a new trend. In this paper, we propose a method for real-time remote gas reading meters based on Wi-Fi wireless network. The system uses MSP430F4152 microcontroller as the core unit with very low power consumption. The gas usage information is collected by a reed sensor, which is computed...
With the rapid development of modern manufacturing, more precision and higher efficiency are required for the detection technology. The vision-based detection system is playing a more important role in modern manufacturing because of its real-time and non-contact detection advantages. In this paper, we propose a vision-based online detection system for measuring diameter and thickness of the support...
This paper presents a state of charge (SOC) based control strategy for virtual synchronous generator (VSG) when connecting to the grid. The VSG is operated in voltage source mode, the output frequency of VSG is calculated by considering the virtual inertial and the power reference together. The power reference is acquired by adding the SOC control module and the frequency control module, the proportion...
Due to the large adjust inertia of the diesel generator set (DGS), the quality of power supply would decline when a large load disturbance occurs to the diesel generator system. This paper aims to improve the stability of the diesel generator system voltage amplitude and frequency under impact load conditions using a virtual synchronous generator (VSG) method. Firstly, a mathematical model of DGS...
Minimizing the flow completion times (FCTs), especially for the short flows, is widely deemed an important optimization goal in designing data center networks, while flow scheduling strategies play great role in achieving this target. Existing optimal scheduling algorithms severely depend on the prior knowledge of flow size, which is hard to implement in practice. Therefore, it is necessary to estimate...
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