TY - GEN
T1 - A design approach of model-based optimal fault diagnosis
AU - Shen, Qiang
AU - Gou, Lin Feng
AU - Yang, Xue Min
PY - 2011
Y1 - 2011
N2 - The main purpose of fault diagnosis is to detect faults rapidly and accurately, decide the types, sizes and trends of faults, furthermore, separate the fault and make a proper decision to avoid fault. A model-based optimal fault diagnosis method is proposed in this paper. Modeling for a class of typical faults whose dynamic characteristics were known and the initial conditions were unknown with methods in linear system theory, and a reduced-order state observer was designed for fault system. In order to realize fault state of on-line optimal estimation, an optimal fault diagnosis method was proposed by optimal control theory and duality principle, meanwhile, observation error and control energy was optimum. In addition, threshold value is used to decide whether the fault occurred. Simulation results demonstrate the optimal fault diagnosis system can detect the typical faults on-line.
AB - The main purpose of fault diagnosis is to detect faults rapidly and accurately, decide the types, sizes and trends of faults, furthermore, separate the fault and make a proper decision to avoid fault. A model-based optimal fault diagnosis method is proposed in this paper. Modeling for a class of typical faults whose dynamic characteristics were known and the initial conditions were unknown with methods in linear system theory, and a reduced-order state observer was designed for fault system. In order to realize fault state of on-line optimal estimation, an optimal fault diagnosis method was proposed by optimal control theory and duality principle, meanwhile, observation error and control energy was optimum. In addition, threshold value is used to decide whether the fault occurred. Simulation results demonstrate the optimal fault diagnosis system can detect the typical faults on-line.
KW - fault diagnosis
KW - optimal observer
KW - quadratic performance index
KW - threshold
UR - http://www.scopus.com/inward/record.url?scp=79961201889&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-21697-8_62
DO - 10.1007/978-3-642-21697-8_62
M3 - 会议稿件
AN - SCOPUS:79961201889
SN - 9783642216961
T3 - Lecture Notes in Electrical Engineering
SP - 493
EP - 501
BT - Electronics and Signal Processing - Selected Papers from the 2011 International Conference on Electric and Electronics, EEIC 2011
T2 - 2011 International Conference on Electric and Electronics, EEIC 2011
Y2 - 20 June 2011 through 22 June 2011
ER -