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In the testing Cloud platform, there exist too many testing tasks waiting for scheduling at the same time. How to design scheduling strategy is really a challenging problem. In this paper, we firstly analyze the relationship between the testing tasks and establish the task relationship model. Based on these analyses, we propose a dynamic task scheduling strategy using genetic algorithm, which not...
Deep learning algorithms such as convolutional neural networks (CNN) have been successfully applied in computer vision. This paper attempts to adapt the optical camera-oriented CNN to its microwave counterpart, i.e. synthetic aperture radar (SAR). As a preliminary study, a single layer of convolutional neural network is used to automatically learn features from SAR images. Instead of using the classical...
A control strategy is proposed for the four-phase fault-tolerant permanent-magnet synchronous machine (PMSM). Fault conditions, including one-phase open circuit, two-phase open circuit and one-phase short circuit, are analyzed and simulated by co-simulation of MATLAB and Flux. Two different fault-tolerant control strategies are analyzed and compared. The machine performances under one-phase short-circuit...
This paper investigates a four-phase fault-tolerant permanent magnet synchronous machine (PMSM) for electric vehicles (EVs). The design principle of multiphase fault-tolerant PMSM is analyzed, the choice of electromagnetic schemes is investigated, and a 12kW four-phase PMSM is designed. The machine performances are optimized from aspects of pole-arc coefficient, eccentricity of permanent magnets,...
This paper discusses an application of the IPM (inverse perspective mapping) geometrical transform on the inspection power robot (SmartGuard). The SmartGuard is an autonomous robotic system for inspection substation equipment instead of people. Based on the stereo vision system, we proposed a Vision base road edge and obstacle detection system. Firstly, we construct the IPM( Inverse perspective mapping)...
Based on the scattering property of the building target in synthetic aperture radar (SAR) images, a one-dimensional detector, named ‘range detector’, is proposed for building detection in this paper. This range detector can effectively detect and extract the footprint of the wall of a cuboid building. Then the outline of building can be captured by marching the footprint. Pi-SAR image of Sendai, Japan,...
A new target identification algorithm is presented in this paper. Active contour model approach is applied to obtain the shape of the objects from background. Coherence coefficient criteria derived for polarimetric synthetic aperture radar (SAR) image is then applied to identify the targets we are interested in. Pi-SAR image of cultivation boxes over sea surface was selected to verify the proposed...
A design method of slot-embedded industrial personal computer (IPC) system based on ARM9 is presented in this paper. This method includes the design of hardware structure and software management platform of the IPC system. The hardware structure, which includes PCI communication module, man-machine interface module, Ethernet communication module and CAN bus communication module, is addressed in detail...
As a drop-in replacement of Continuous Electron Beam Accelerator Facility (CEBAF) 5kW CW klystron system, a 1497MHz, high efficiency magnetron using injection phase lock [1] and slow amplitude variation using magnetic field trimming and anode voltage modulation has been studied systematically using MatLab/Simulink simulations. The magnetron model is based the characteristics of experiment and manufacture...
Aimed at the deficiency of the magnetic guide and RFID parking system used by substation inspection robot now, a laser navigation method is introduced, and a prototype laser navigation system is designed based on NAV200. The whole structure of the navigation system is presented; the data processing and navigation control algorithm are also described in detail. In order to verify the repetitive precision...
Recently the posteriorgram-based template matching framework has been successfully applied to query-by-example spoken term detection tasks for low-resource languages. This framework employs a tokenizer to derive posteriorgrams, and applies dynamic time warping (DTW) to the posteriorgrams to locate the possible occurrences of a query term. Based on this framework, we propose to improve the detection...
A five-phase fractional-slot concentrated winding (FSCW) permanent-magnet synchronous machine (PMSM) used for electromagnetic propeller, featuring high power density and low noise, is investigated in this paper. Based on the theoretical and finite element analysis (FEA), the harmonic components and torque performance of the five-phase machine are analyzed in both healthy and faulty conditions.
The VORPAL finite-difference time-domain particle-in-cell simulation tool now has thermal solver capability, which we are using to model transmission lines and accelerating cavities of cryogenic SRF accelerators. This same capability can be brought to bear on room temperature problems EM and Thermal physics. Our thermal solver treats the non-linear evolution of the material properties, such as electrical...
The framework of posteriorgram-based template matching has been shown to be successful for query-by-example spoken term detection (STD). This framework employs a tokenizer to convert query examples and test utterances into frame-level posteriorgrams, and applies dynamic time warping to match the query posteriorgrams with test posteriorgrams to locate possible occurrences of the query term. It is not...
This paper describes a study on query-by-example spoken term detection (STD) using the acoustic segment modeling technique. Acoustic segment models (ASMs) are a set of hidden Markov models (HMM) that are obtained in an unsupervised manner without using any transcription information. The training of ASMs follows an iterative procedure, which consists of the steps of initial segmentation, segments labeling,...
Industrial robots have been widely used in manufacturing plants to handle various jobs such as palletizing, machine tending, and arc welding. Before real commissioning, the entire robot application system needs to be simulated in a virtual system to ensure safety and to improve development efficiency. Due to the requirements on robots to complete various jobs, multiple robot application simulation...
Traumatic subarachnoid hemorrhage (TSAH) related to alcoholism is a notable risk factor. Thromboxane A-2 (TXA-2) and its receptors-thromboxane A-2 receptor (TXA2R) of rat models were detected to further explore the death mechanisms. Seventy male Sprague-Dawley rats were divided into acute alcoholic intoxication and chronic alcoholism groups. Rat models had been established as previously study described...
In web services-based applications, Web applications can be composed of hundreds of web services. Hence, application system quality depends on the quality of the involved web services. When the service evolves, it may not satisfy anymore the requirements of end user (anyone who use the web service). Any change of a web service, it must be re-tested at the unit level, and re-used to form services-based...
A novel radial magnetic-field-modulated brushless double-rotor machine (MFM-BDRM), which is the key part of compound-structure permanent-magnet synchronous motor (CS-PMSM), is proposed in this paper. The speed and torque relations of the first-stator magnetic field, the first PM rotor and the modulating ring rotor are investigated by analytical method. The harmonic components of magnetic field in...
In this paper, interferometric synthetic aperture radar (InSAR) data are utilized to extract the forestry damage information caused by typhoon over Tomakomai, Hokkaido, Japan. By computing the interferograms of two single-pass X-band SAR data before and after the typhoon, the change of their heights could be detected even the fallen tress were not cleared, and therefore, the damage level can then...
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