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IEEE International Conference on Power and Power and Renewable Energy (ICPRE)

作者： Lingyu Guo Weidong Hu Yang Du Zhongguang Yang Xianghong Xiong Simin Wu Yipu Li Yun Zhou East China Electric Power Test & Research Institute Company Limited Electric Power Research Institute State Grid Shanghai Electric Power Company Shanghai China Dept. of Electrical Engineering Shanghai Jiao Tong University Key Laboratory of Control of Power Transmission and Conversion Ministry of Education Shanghai China

With the rapid popularization of EVs (Electric vehicles), the uncoordinated charging and swapping behavior of residential EVs may increase more power load during the peak period of the original urban power grid, affecting the stability of the power grid. Therefore, based on the high potential for scheduling the charging and discharging operations of EVs and batteries of battery swapping stations in residential quarters, this paper proposes an optimal dispatch strategy for urban residential quarters considering nearby battery swapping stations. First, the paper establishes a two-stage optimal electricity dispatch model that takes models of residential PV, the V2G (vehicle to grid) function of EVs, and the nearby battery swapping station into account. Second, to compare the total electricity cost and peak-valley difference before and after optimization, the paper also establishes a model for simulating uncoordinated charging and provides evaluation indices for comparison. Finally, based on specific data from a residential quarter in Shanghai and a nearby NIO battery swapping station, the effectiveness of the optimal electricity dispatch strategy is verified, and a specific scheduling plan is provided.

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A serial structure for digital microfluidic biochips online testing

A serial structure for digital microfluidic biochips online ...

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International Conference on Electronic Measurement and Instruments, ICEMI

作者： Deng Libao Sun Ning Ren Tao Fu Ning School of Information and Electrical Engineering Harbin Institute of Technology at Weihai Weihai China Dept. of Automatic Test and Control Harbin Institute of Technology Harbin China

Digital microfluidic biochips are revolutionizing the field of biochemistry experiment. Due to the rapidity and accuracy acquirement of the operation in its applications, the comprehensive online testing is necessary in order to enhance the reliability of the system. However, the existing testing methods which focus on the quality of droplets have the disadvantages of consuming a lot of time and resources, and the re-executed operations cannot be performed in pin-constrained biochips, leading to the expansion of chip scale and the increase of fabricating costs. This paper proposes an optimal structure design for testability, targeting for the real-time voltage sequences of electrode array as the feedback signals for online testing. By integrating shift register circuits into the original chip, the scheme can transmit feedback data to the microcontroller serially through minimum number of control pins to dynamically reconfigure the biochip. Furthermore, we propose a heuristic approach for large scale electrode array, further enhancing the efficiency of online testing. Experiments validate the effectiveness of the proposed scheme by real-life biochemical applications.

关键词： Electrodes testing Clocks Microfluidics Shift registers Pins Sensors

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test wrapper algorithm for scan chain balance based on entropy increase hybrid differential evolution

Test wrapper algorithm for scan chain balance based on entro...

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International Conference on Electronic Measurement and Instruments, ICEMI

作者： Deng Libao Zhang Baoquan Wang Sha Qiao Liyan School of Information and Electrical Engineering Harbin Institute of Technology at Weihai Weihai China Dept. of Automatic Test and Control Harbin Institute of Technology Harbin China

A well cores reused-based wrapper design is an important approach to minimize SOC test application time and test costs. The combinatorial optimization problem of core wrapper design has been proven to be a NP-hard problem. In this paper, a wrapper scan chain balance algorithm with entropy increase hybrid discrete differential evolution (EIHDE) is proposed to solve the core wrapper problem, which is inspired by thermodynamic system principle of entropy increase and outstanding global searching ability of Differential Evolution (DE). The proposed approach develops a cooperative mutation strategy based on entropy increase for the problem to preserving its interesting search mechanism for discrete domains. In the proposed model, two cooperative encode modes of individuals are introduced for standard differential mutation and the cooperative entropy increase mutation: integer encode mode and binary encode mode. EIHDE controls the search space by differential mutation, and search for superior individual in local space by entropy increase mutation. The combination of two kinds of mutation operations promotes the optimization ability considerably and achieves a better tradeoff between exploitation and exploration. The experimental results of the ITC'02 SOC test benchmarks show that EIHDE can achieve more balanced results compared with other algorithms.

关键词： IP networks Algorithm design and analysis Entropy Optimization Sociology Statistics Binary codes

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Development of universal FMC carrier card based on PXI Express

Development of universal FMC carrier card based on PXI Expre...

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IEEE Annual Ubiquitous Computing, Electronics & Mobile Communication Conference (UEMCON)

作者： Wang Liu Yanlin Ren David He Liyan Qiao Dept. of Automatic Test and Control Harbin Institute of Technology Harbin P.R.China Dept. of Mechanical and Industrial Engineering University of Illinois at Chicago Chicago USA

ISBN: (纸本)9781509014972

With the increasing testing requirements and costs, the flexibility of equipment in use is becoming more and more important because it can satisfy the test request of different tasks. The emergence of the FPGA Mezzanine Card (FMC) standard allows us to re-design I/O interfaces with only FPGA's hardware kept unchangeable. PXI-Express (PXIe) based universal FMC carrier card is developed to apply on data acquisition and storage system in this paper. The universal carrier card integrates 1GB DDR2 SDRAM and 32MB SRAM memory to provide data caches for both of high-speed data and low speed application. Also, the carrier card provides high-speed and reconfigurable digital I/O interface with the FMC connector. As the extension of PCI Express in the instrument field, PXIe technologies are capable of high speed data transmission between the card and host's memory with DMA. This paper implements the method on more efficient data transmission, namely the Peer-to-Peer. Due to the fact that data can be transferred from one card to another without utilizing system memory using the Peer-to-Peer method, the data transmission delay can be reduced and the system bandwidth can be improved. In order to test the performances of the FMC universal carrier card in high-speed data acquisition, the universal carrier card is connected with a high-speed ADC (I/O) FMC mezzanines module. The ADC module integrates two channel ADCs providing 1.5GSa/s dual-channel sampling rate, 3GSa/s single-channel sampling rate and 8-bit of resolution. Moreover, the writing and reading speeds by Peer-to-Peer transmission between two FMC universal cards have been verified up to 846.6MB/s and 789.1MB/s respectively. The results show that the developed FMC universal carrier card can establish excellent connection between FPGA and I/O mezzanine. Meanwhile, the FMC card meets the data transmission requirement well between data acquisition and storage with Peer-to-Peer and high-speed data cache.

关键词： Field programmable gate arrays Standards Pins SDRAM Data acquisition

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Anomaly detection in analog circuits using Support Vector Data Description

Anomaly detection in analog circuits using Support Vector Da...

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International Automatic testing Conference, AUTOtestCON

作者： Yang Yu Yueming Jiang Yanmei Lv Yongxue Ma Xiyuan Peng Dept. of Automatic Test and Control Harbin Institute of Technology Harbin China Machine Engineering College Machine Technology Research Institute Shijiazhuang China

With the rapid development of electronic technology, electronic systems are widely used in various fields, and the reliability requirement for electronic systems is also increasing. Many test and diagnosis methods have been proposed. However, few methods can be used to recognize the intermediate anomaly state between normal and fault state. To solve the above problem, this paper presents an anomaly detection method based on Support Vector Data Description (SVDD) for analog circuits. Simulation and experiments have verified the effectiveness.

关键词： Circuit faults Multiresolution analysis Wavelet transforms Analog circuits Mathematical model Feature extraction

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Attitude estimation algorithms using low cost IMU

International Journal of Control and Automation

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International Journal of control and Automation 2015年第11期8卷 113-126页

作者： Quoc, Dung Duong Sun, Jinwei Le, Van Nhu Dept. of Automatic test and control Harbin Institute of Technology Harbin China Research center for Space Optics Engineering Harbin Institute of Technology China Le Qui Don Technical University Cau Giay Ha Noi Viet Nam

Attitude estimation has a wide range of applications including aerial (UAVs for example), underwater (ROVs for instance), navigation systems, robotics, games, augmented reality system, industrial and so on. Extensive research over decades in this field resulted in a number of powerful estimators;complex like Kalman based algorithms as well as simple such as complementary filters & the kinds. For applications where computational simplicity is of prime concern, complementary filters have proven efficiency. This paper presents a comparative study of computationally simple algorithms naming Explicit Complementary Filter (ECF) and Gradient Descent based Complementary Filter (GDCF) along with computationally demanding extended Kalman filter-a de-facto standard for attitude estimation so far, regarding attitude estimation based on MEMS IMU. An alternative would be the variants of complementary filter;sufficiently efficient and simple scheme to avoid computational *** of these estimators is evaluated for Euler angle estimation using both simulated data from Matlab and experimental data from MPU6050 IMU. The assessment is based on the root mean square error computation for these algorithms. Moreover, the algorithms adjustable parameters were exploited for a range of values in the hunt for perfection. © 2015 SERSC.

关键词： Data fusion

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Weld seam recognition based on CCD image processing

International Journal of Signal Processing, Image Processing...

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International Journal of Signal Processing, Image Processing and Pattern Recognition 2015年第6期8卷 245-252页

作者： Yu, Jintao Li, Xian Ding, Mingli Dong, Shicheng Li, Junling School of Computer and Information Engineering Harbin University of Commerce Harbin China Dept. of Automatic Test and Control Harbin Institute of Technology Harbin China

Weld seam recognition is the key technique in visual tracking research. Based on the weld image features, the image preprocessing and the linear feature extraction method of the weld seam recognition are designed. The extended adaptive median filtering method and modified Otsu adaptive threshold selection method for image segmentation are used in the image pre-processing process, to remove the noise and compress the image data. Through comparing with several other edge operators, the Roberts operator is chosen to achieve the goal of detecting the welding edge. Finally, the weld seam information is extracted through Hough transform and a satisfied result can be acquired. The study provides a theoretical support for the following designing of the weld tracking system. © 2015 SERSC.

关键词： Welds

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Complementary filter performance enhancement through filter gain

International Journal of Signal Processing, Image Processing...

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International Journal of Signal Processing, Image Processing and Pattern Recognition 2015年第7期8卷 97-110页

作者： Quoc, Dung Duong Sun, Jinwei Le, Van Nhu Luo, Lei Dept. of Automatic Test and Control Harbin Institute of Technology Harbin China Research center for Space Optics Engineering Harbin Institute of Technology China Le Qui Don Technical University Cau Giay Ha Noi Viet Nam

Complementary filters coupled with MEMS IMU are preferred in applications where computational simplicity, low power and low cost is of prime importance. Such algorithms are equipped with fixed filter’s gain, however improvements can be realized by changing the filter’s gain as per the dynamic situation experienced by the platform. This paper is intended to evaluate the performance of conventional fixed gain complementary algorithm against adoptive gain complementary filter for attitude estimation using MEMS IMU as a test subject. As only IMU (Inertial Measurement Unit) has been exploited without using any aided sensory system, so the mandate is limited to evaluate performance of these algorithms on the basis of Euler angles roll and pitch estimation. Significant performance improvement is observed by varying filter gain in accordance with dynamic situation experienced by the system. © 2015 SERSC.

关键词： Data fusion

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Realization of High-Speed and Big-Capability Data Recorder

Realization of High-Speed and Big-Capability Data Recorder

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2013 IEEE 11th International Conference on Electronic Measurement & Instruments

作者： Deng Libao Zhao Haoran Yang Yi Dept. of Automatic Test and Control Harbin Institute of Technology School of Information Science and Engineering Harbin Institute of Technology at Weihai The Second Artillery Representation Office in Harbin

ISBN: (纸本)9781479907571

Data-recording device for aircraft requires high-speed, high-capacity and non-volatile storage. In the paper, we provide a good solution for high-speed large-capacity data logger. We use FPGA as controller, SDRAM as high-speed data buffer, CF card as a non-volatile data memory and USB2.0 as Communication interface to design a dual-channel data logger. The test results show that the recorder sampling rate is 120MSa/s, single-channel data store rate is 38MB/s, the total capacity is 64GB, and data upload rate is up to 30MB/s. Therefore it meets the expectations.

关键词： FPGA, CF card, SDRAM, USB2.0

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Research on surface electric field of parallel gap

Research on surface electric field of parallel gap

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2011 7th Asia-Pacific International Conference on Lightning, APL2011

作者： Yu, Junjie Yu, Zhanqing Zeng, Rong Chen, He Peng, Xiang State Key Laboratory of Control and Simulation of Power Systems and Generation Equipments Dept. of Electrical Engineering Tsinghua University Beijing 100084 China Maintenance and Test Center of EHV Power Transmission Company China Southern Power Grid Co. Ltd. Guangzhou 510663 China

ISBN: (纸本)9781457714665

With parallel gap, by controlling the motion path of the electric arc, effectively avoid burning and damaging the insulator during lightning strike so that the effect to reduce the accident rate of line is obvious. Because of simple structure, convenient installation and good economical efficiency, its importance in measures of lightning protection for transmitting line is continually improved. Electric field characteristics on the surface of parallel gap electrode have obvious influence on corona generation and the gap breakdown position and are the key parameters that must be considered in the design. Based on the finite element method, this paper sets up the analysis model of electric field of parallel gap including the tower, the conductor and the insulator, uses ANSOFT software for simulation, studies the surface electric field characteristics of parallel gap electrode, compares the electric field of four types of parallel gap put forward in the paper and analyzes the law of influence of parallel gap electrode parameters on the electric field characteristics. The results show that, when the short circuit distance is increased, the maximum values of electric field of ball end and snap ring body are obviously increased;the opening angle of snap ring is larger and the maximum value of electric field of ball end is higher;when the pipe diameter is increased, the maximum value of electric field of snap ring body is reduced considerably;the ball end is bigger and the maximum value of electric field of ball end is less;the ring pipe diameter is the structure parameter having the largest influence on the surface electric field;for the ball end at the end of ring electrode, the structure parameter having the largest influence on the electric field is the diameter of ball end. Reducing the distance that the ball end stands out of the ring plane can decrease the maximum value of electric field of ball end. © 2011 IEEE.

关键词： Finite element method

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