Research on the L eak Curren t Fault D iagnostic Technology for Launch Veh icle

Transcription

1 ACTA ARMAM ENTAR II Vol. 31 No. 7 Jul , 3, 2, 1 (11, ; 21, ; 31, ) :, (LV ),,, :,, : ; ; ; ; ; : TP30217 : A : (2010) Research on the L eak Curren t Fault D iagnostic Technology for Launch Veh icle ZHAO Gang 1, 3, HUANG Da2rong 2, HUANG Xi2yue 1 ( 11Colleage of Automation, Chongqing University, Chongqing , China; 21 Institute of Information Science and Engineering, Chongqing J iaotong University, Chongqing , China; 31Chongqing Agent of Second A rtillery Corp s, Chongqing , China) Ab stra c t: A new leak current fault diagnosis method of Launch Vehicle (LV ) was researched by combi2 ning connection number of set pair analysis and fault tree analysis( FTA ). Every kind of factors, which could make the leak current fault of LV, was analyzed in detail. Then a fault tree model of LV leak cur2 rent was constructed according to every possible com bination way of these factors, which can impact on LV leak current fault. An attribute significance model of factor influencing leak current fault was p resen2 ted, and a leak current fault diagnostic technology of LV was established by introducing the interm ediate p robability and the theory of connection number of set pair analysis. An examp le of LV leak current fault diagnosis was given to verify the reliability and effectiveness of the model. The sim ulation results show that the model was easy to find the weakness of system, so it has better updating capability and app lied p rospect. Ke y wo rd s: system engineering; fault diagnosis; fault tree; connection number of set pair analysis; in2 termediate p robability; attribute significance : : ( ) ; (2006BB2422) ; ( KJ060414) ; ( ) ; (0904) : (1973 ),, ; (1978 ),,, E2mail: hcx1978@163. com

2 (LV ), LV,,,,,, LV,, LV, LV,,, [ 1 ] [ 2 ] [ 3 ] Agent [ 4-7 ] [ 8 ], LV,, LV, 3 M, 10 M, 2, R SPA = a + bi + cj, : a,,,, ; b, ; c b c,,, b a a,,, [ 9 ], ( SPA ), LV,, ; c,, b = 1 - a - c1,, ( ) ( ) ( ) 3,,,,, 1 [ 10 ] 20 80,, :, [ 5, ] 111 ( ) ( ) ( ) 3, 112 U =A +B i + C j, (1) : A, B, C ; j = - 1, C j A ; i [ - 1, 1 ], B A C ; U ; A, B i, C j N =A +B + C, N ; u =U /N, a =A /N, b =B /N, c = C /N, u = a + bi + cj, (2) : a, b, c, a + b + c = ) 2 1 u 1 = a 1 + b 1 i + c 1 j, u 2 = a 2 + b 2 i + c 2 j, u 1 u 2 u = a + bi + cj, u = u 1 + u 2, : a = a 1 + a 2 - a 1 a 2 ; c = c 1 c 2 ; b = 1 - a - c. 2) 2 2 u 1 = a 1 + b 1 i + c 1 j, u 2 = a 2 + b 2 i + c 2 j, u 1 u 2 u = a + bi + cj, u = u 1 u 2, : a = a 1 a 2 ; c = c 1 + c 2 - c 1 c 2 ; b = 1 - a - c. 3)

3 R SPA = a + bi + cj, Ru = a + b i + c j u x u b - b + c - c. R I u R I = a - a + > R I v, u v,, u. 2 L V 211 [ 13 ] ( FTA ) 212 L V GJB GJB , LV LV ; G 1 G 2 G 3 G 4 G 5 G 6 G 7, G 8,,, LV,, 2 1 2,, 1, 2 FTA, : a, ; b, ; c ( ) b 1 c,, b a,, b a,c,, b = 1 - a - c. 1 Fig. 1 The graphic symbol of logic gates 3 L V LV, 2 LV Fig. 2 The lookup fault tree of leak current of LV

4 Tab. 1 The descrip tion of m iddle events TOP G 1 G 2 G 3 G 4 G 5 G 6 G 7 G 8 2 Tab. 2 The descrip tion of bottom events and its reliability data a b c X X X X X X X X X X X X X X X X X : X 1, X 2, X 3, X 4,, X 5, X 6, X 7, X 8, X 9, X 10, X 11, X 12, X 13, X 14, X 15, X 16, X 17.,,, :,, 2 LV,, LV, LV, LV,, LV, LV,,,,,,, LV MCS 17, : MCS 6 : { X 1 }, { X 2 }, { X 3 }, { X 4 }, { X 5 }, { X 6 }; 5 : { X 7 }, { X 8 }, { X 9 }, { X 10 }, { X 11 }; 6 : { X 12 }, { X 13 }, { X 14 }, { X 15 }, { X 16 }, { X 17 }. X i 2, LV R TOP = i j, LV 01108, , ( i = 1), R TOP = j, 01219;, ,,,,, R TOP, LV, LV,, 3 3,,

5 Tab. 2 The attribute significance of bottom events influencing top events R I X X X X [ - 016, 018 ], 114. LV, 2212%,, LV X X X X X X X X X X X X X Fig. 4 LV Fig. 4 Frequency p roperties curve of fault signal for LV with intermediate state LV,,,, :, LV [ - 012, 116 ], 118;, 4 LV,,,,,,,, ( References) 3 LV Fig. 3 Frequency p roperties curve of fault signal for LV without intermediate state [ 1 ],,,. [ J ]. :, 2002, 25 ( 12) : ZENG Xue2hong, FAN You2p ing, HUANG Xi2yue, et al. Leak cur2 rent fault diagnosis p roblem2solving in launch vehicle controlling system [ J ]. Journal of Chongqing University: Natural Science Edi2 tion, 2002, 25 (12) : ( in Chinese) [ 2 ],,,. [ J ]. :, 2003, 26 (1) : TANG Xian2m ing, FAN You2ping, HUANG Xi2yue, et al. Design2 ingand realization of leak current fault flatroof for launch vehicle controlling system [ J ]. Journal of Chongqing University: Natural Science Edition, 2003, 26 (1) : ( in Chinese)

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