Earticle

초록

영어

In view of the difficulties caused by determining threshold for fault detection of analog circuits, a method based on principal component analysis (PCA) was proposed to overcome these difficulties. The basic model of the proposed method and the general rule for analog fault detection were described in detail. Power supply current test has the advantages that only one test point is needed and there is no need to propagate fault effects to the outputs. Fault detection of analog circuits using PCA of power supply current was evaluated by experiment. The signal filtering and amplifying circuit used in the ultrasonic liquid sensor was selected as the research object. And the detection results using power supply current are compared with those using the output voltage under the same stimulus. The results show that the PCA based method can use the information in both time and frequency domain simultaneously, and it can overcome the difficulty in determining threshold by the expert’s empirical knowledge. These make it a more suitable candidate for fault detection of analog circuits than pure time-domain or pure frequency-domain methods.

목차

Abstract
 1. Introduction
 2. Analog Circuits Test Using PCA
 3. Experiment Results and Discussion
  3.1. Experiment Circuits
  3.2. Fault Detection Using Power Supply Current
  3.3. Fault Detection Using Output Voltages
  3.4. Discussion
 4. Conclusions
 References

키워드

저자

• Chaojie Zhang [ College of Power Engineering, Naval University of Engineering 717 Jiefang Street, Wuhan, China, 430033 ]
• Guo He [ College of Power Engineering, Naval University of Engineering 717 Jiefang Street, Wuhan, China, 430033 ]
• Qiaobin Zhang [ College of Power Engineering, Naval University of Engineering 717 Jiefang Street, Wuhan, China, 430033 ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Control and Automation

• 간기

  월간

• pISSN

  2005-4297

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605