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《Journal of Southwest Jiaotong University》 2011-04
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Coarse Signal Processing for AC Power Smart Sensor

CHE Chang1,2,HU Dan1(1.School of Mechanical Engineering and Automation,Xihua University,Chengdu 610039,China;2.School of Electrical Engineering,Southwest Jiaotong University,Chengdu 610031,China)  
In order to improve the testing precision and real-time performance of the AC electrical power performance index,the coarse signal processing approach of AC power intelligent sensor was studied based on the theory of correlation analysis method and the least-squares method.The least-squares characteristic parameters method was used to estimate the initial sample points of AC voltage and AC current,and the electrical power parameters were obtained.The formulas of calculating quantity and computation complexity were discussed by comparing the least-squares characteristic parameters method with the correlation analysis method.The results show that when the noise signal amplitude is permitted from 3% to 12%,the proposed method can reduce the processing time by 49.4% and decrease the testing error by 2/3,and the requirement for the signal-to-noise ratio of the system can also be reduced as opposed to the traditional method.
【Fund】: 四川省教育厅科研基金资助项目(08ZC010);; 四川省机械电子工程重点学科(西华大学);; 四川省制造与自动化重点实验室(西华大学)研究基金
【CateGory Index】: TP212.6
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【Citations】
Chinese Journal Full-text Database 10 Hits
1 Yang Xinyong (College of Automation Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China) Huang Shengguo (College of Civil Aviation, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China);Development of intelligent magnetic heading sensor and analysis of its error compensation algorithms[J];Journal of Beijing University of Aeronautics and Astronautics;2004-03
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【Co-citations】
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1 Hao Zhenhai Huang Shengguo(School of Civil Aviation,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China);Integrated heading system based on differential magnetic compasses[J];Journal of Beijing University of Aeronautics and Astronautics;2008-04
2 WANG Lu1,ZHAO Zhong1*,SHAO Yu-mei1,HE Hai-ou1,LUO Jin2 1.Automation Collage,Northwestern Polytechnical Universi ty,Xi'an 710072,China;2.Chengdu Aircraft Industrial Group,Chengdu 610092,China;To Analyze and Compensate Errors of Magnetic Compass[J];Chinese Journal of Sensors and Actuators;2007-02
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7 WEN Xiang-wen,PAN Ming-hua,ZHU Guo-li(College of Mechanical Science and Engineering,Huazhong University ofScience and Technology,Wuhan 430074,China);Research on characteristic of the inclinator and compensation for its measurement error[J];Transducer and Microsystem Technologies;2011-03
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9 XIA Xiangyang1,LUO An2,LUO Shiwu3,XU Jin4(1.College of Electrical Engineering,Changsha University of Science and Technology,Changsha 410077,China;2.College of Electrical Engineering,Hunan University,Changsha 410082,China; 3.Chongqing Power Corporation Education Training Center,Chongqing 400053,China; 4.Shaoguan Smelter Factory,Shaoguan 512024,China);Harmonic current detection based on improved extended Prony spectrum estimation[J];Electric Power Automation Equipment;2010-10
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