ÒÆÏàÈ«ÇÅPS FBÒ»¸öÖÜÆÚ¿ÉÒÔ·ÖΪ12Öй¤×÷ģ̬£¬ÆäÖÐÕý¸º°ëÖÜÆÚÊǶÔÓ¦µÄ¹ØÏµ£¬Ö»²»¹ý¸Ä±äµÄÊǵçÁ÷ÔÚÇűÛÉϵÄÁ÷Ïò£¬ÏÂÃæÎÒÃÇÊ×ÏÈÀ´·ÖÎöZVSÕâ12¸ö¹¤×÷ģ̬µÄÇé¿ö£¬½Ò¿ªÒÆÏàÈ«ÇŵÄÉñÃØÃæÉ´¡£ÎÄÕÂÀ´Ô´£ºhttp://www.minaco-uk.com/bl/392.html
¹¤×÷ģ̬һ£ºÕý°ëÖÜÆÚ¹¦ÂÊÊä³ö¹ý³Ì
ÈçÉÏͼ,´ËʱT1ÓëT4ͬʱµ¼Í¨£¬T2ÓëT3ͬʱ¹Ø¶Ï£¬Ô±ßµçÁ÷µÄÁ÷ÏòÊÇT1—Lp—Lk—T4,ÈçͼËùʾ¡£
´ËʱµÄÊäÈëµçѹ¼¸ºõÈ«²¿½µÂäÔÚͼÖеÄA,BÁ½µãÉÏ£¬¼´U
AB=V
in, ´ËʱABÁ½µãµÄµç¸ÐÁ¿³ýÁËͼÉϱêʾ³öµÄLpÓëLkÖ®Í⣬Ӧ¸Ã»¹Óдμ¶·´É仨À´µÄµç¸ÐL
S`£¨ÒòΪ´Ëʱ´Î¼¶¶þ¼«¹ÜVD1Êǵ¼Í¨µÄ£©£¬¼´L
S`=n
2* L
f,ÓÉÓÚÊǰ´ÕÕÔÑ±ÈÆ½·½ÕÛËã»ØÀ´£¬ËùÒÔL
S`»á±ÈLk´óºÜ¶à£¬µ¼ÖÂIpÉÏÉý»ºÂý£¬ÉÏÉýµçÁ÷¡÷IpΪ
¡÷Ip=(Vin-n*Uo)*(t1-t0)/( Lk+ L
S`)
Vin-n*Uo
ÊÇгÕñµç¸ÐÁ½¶ËµÄµçѹ£¬¾ÍÊÇÓÃÊäÈëµçѹ¼õÈ¥´Î¼¶·´É仨À´µÄµçѹ
´Ë¹ý³ÌÖУ¬¸ù¾Ý±äѹÆ÷µÄͬÃû¶Ë¹ØÏµ£¬´Î¼¶¶þ¼«¹ÜVD1µ¼Í¨£¬VD2¹Ø¶Ï£¬±äѹÆ÷Ô±ßÏò¸ºÔØÌṩÄÜÁ¿£¬Í¬Ê±¸øÊä³öµç¸ÐL
fÓëÊä³öµçÈÝC
f´¢ÄÜ¡££¨Í¼ÖÐδ»³ö£©
´Ëʱ£¬ U
C2 =U
C3=U
A=U
AB=V
in
U
B=0V
¹¤×÷ģ̬¶þ£º³¬Ç°±ÛгÕñ¹ý³Ì
ÈçÉÏͼ£¬´Ëʱ³¬Ç°ÇűÛÉϹÜT1ÔÚt1ʱ¿Ì¹Ø¶Ï£¬µ«ÓÉÓÚµç¸ÐÁ½¶ËµçÁ÷²»ÄÜÍ»±äµÄÌØÐÔ£¬±äѹÆ÷ԱߵĵçÁ÷ÈÔÈ»ÐèҪά³ÖÔÀ´µÄ·½Ïò£¬¹ÊµçÁ÷±»×ªÒƵ½C1ÓëC2ÖУ¬C1±»³äµç£¬µçѹºÜ¿ì»áÉÏÉýµ½ÊäÈëµçѹVin£¬¶øC2¿ªÊ¼·Åµç£¬µçѹºÜ¿ì¾ÍϽµµ½0£¬¼´½«AµãµÄµçλǯλµ½0V¡£
ÓÉÓڴμ¶ÕÛËã¹ýÀ´µÄ¸ÐÁ¿L
S`Ô¶Ô¶´óÓÚгÕñµç¸ÐµÄ¸ÐÁ¿L
k£¬¹Ê»ù±¾¿ÉÒÔÈÏΪ´ËÊǵÄÔ±ßÀàËÆÒ»¸öºãÁ÷Ô´£¬´ËʱµÄip»ù±¾²»±ä£¬»òϽµºÜС¡£
C1Á½¶ËµÄµçѹÓÉÏÂʽ¸ø³ö
Vc1=Ip*(t2-t1)/(C1+C3)= Ip*(t2-t1)/2 C
lead
C2Á½¶ËµÄµçѹÓÉÏÂʽ¸ø³ö
Vc1= Vin- ¡¾Ip*(t2-t1)/2 C
lead¡¿
ÆäÖÐIpÊÇÔÚģ̬2Á÷¹ýԱߵç¸ÐµÄµçÁ÷£¬ÔÚT2ʱ¿ÌC1ÉϵĵçѹºÜ¿ìÉÏÉýµ½Vin£¬C2ÉϵĵçѹºÜ¿ì±ä³É0V£¬D2¿ªÊ¼µ¼Í¨¡£
ÔÚt2ʱ¿Ì֮ǰ£¬C1³äÂúµç£¬C2·ÅÍêµç£¬¼´ V
C1= V
C3= Vin V
C2=V
A=V
B= 0V
ģ̬2µÄʱ¼äΪ
¡÷t= t2-t1=2 Clead * Vin/ Ip
¹¤×÷ģ̬Èý£ºÔ±ßµçÁ÷Õý°ëÖÜÆÚÇ¯Î»ÐøÁ÷¹ý³Ì
ÈçÉÏͼ£¬´Ëʱ¶þ¼«¹ÜD2ÒѾÍêÈ«µ¼Í¨ÐøÁ÷£¬½«³¬Ç°±ÛϹÜT2Á½¶ËµÄµçѹǯλµ½0V£¬´Ëʱ½«T2´ò¿ª£¬¾ÍʵÏÖÁ˳¬Ç°±ÛϹÜT2µÄZVS¿ªÍ¨£»µ«´ËʱµÄԱߵçÁ÷ÈÔÈ»ÊÇ´ÓD2×ߣ¬¶ø²»ÊÇT2¡£
´ËʱÁ÷¹ýԱߵĵçÁ÷ÈÔÈ»½Ï´ó£¬µÈÓ븱±ßµç¸ÐLfµÄµçÁ÷ÕÛË㵽ԱߵĵçÁ÷
¼´ ip(t)= iLf(t)/n
´ËʱµçÁ÷µÄϽµËٶȸúµç¸ÐÁ¿Óйء£
´Ó³¬Ç°±ÛT1¹Ø¶Ïµ½T2´ò¿ªÕâ¶Îʱ¼ätd£¬³ÆÎª³¬Ç°±ÛËÀÇøÊ±¼ä£¬Îª±£Ö¤Âú×ãT2µÄZVS¿ªÍ¨Ìõ¼þ£¬¾Í±ØÐëÈÃC2·Åµçµ½0V£¬¼´
td ≥¡÷t= t2-t1=2 Clead * Vin/ Ip
´Ëʱ£¬ UC1=UC3=Vin £¬ UA=UB=UAB=0V
C3µÄ¼«ÐÔ²¢Ã»ÓÐÍ»±ä£¬ÔÚT4¹Ø¶ÏǰC3µÄµçѹ¾ÍµÈÓÚԱߵÄÊäÈëµçѹ£¬ÒòΪ´ËʱBµãµçѹΪ0V£¬µ±T4¹Ø¶ÏµÄʱ¿Ì£¬¿ÉÒÔÈÏΪÊÇipͨ¹ýLkÓëVinͨ¹ýC3ͬʱ¸øC4³äµç
¹¤×÷ģ̬ËÄ£ºÕý°ëÖÜÆÚÖͺó±ÛгÕñ¹ý³Ì
ÈçͼËùʾ:ÔÚT3ʱ¿Ì½«Öͺó±ÛϹÜT4¹Ø¶Ï£¬ÔÚT4¹Ø¶Ïǰ£¬C4Á½¶ËµÄµçѹΪ0£¬ËùÒÔT4ÊÇÁãµçѹ¹Ø¶Ï¡£
ÓÉÓÚT4µÄ¹Ø¶Ï£¬Ô±ßµçÁ÷ipͻȻʧȥͨ·£¬µ«Óɵç¸ÐµÄÔÀíÎÒÃÇÖªµÀ£¬Ô±ßµçÁ÷²»ÔÊÐíÍ»±ä£¬ÐèҪά³ÖÔÀ´µÄ·½Ïò£¬ÒÔÒ»¶¨µÄËÙÂʼõÉÙ¡£ËùÒÔ£¬Ô±ßµçÁ÷ip»á¶ÔC4³äµç£¬Ê¹C4Á½¶ËµÄµçѹÂýÂýÍùÉÏÉý£¬Í¬Ê±³é×ßC3Á½¶ËµÄµçºÉ¡£
¼´ ip(t)=I2sinω(t-t3)
vc4(t)=ZpI2sinω(t-t3)
vc3(t)=Vin-ZpI2sinω(t-t3)
ÆäÖУ¬I2£ºt3ʱ¿Ì£¬Ô±ßµçÁ÷ϽµÖ®ºóµÄµçÁ÷Öµ
Zp£ºÖͺó±ÛµÄгÕñ×迹£¬Zp= )0.5
ω£ºÖͺó±ÛµÄгÕñ½ÇƵÂÊ£¬ω=1/(2Lr*Clag)0.5
¿ÉÄÜÓÐÈË»á¸Ðµ½Ææ¹Ö£¬µçÁ÷Ôõô³öÏÖÁËÕýÏÒº¯Êý¹ØÏµÄØ£¬Ã»´í£¬ÒòΪ´ËʱÊÇԱߵÄгÕñµç¸ÐLrÓëÖͺó±ÛµÄÁ½¸öµçÈÝC3,C4гÕñ£¬Æä¹ØÏµ¾ÍÊÇÕýÏÒ¹ØÏµ¡£
ΪºÎÎÒÉÏÃæÌáµ½Ö»ÓÐԱߵÄгÕñµç¸ÐLr²Î¼ÓгÕñÄØ£¬ÄÇô´Î¼¶µÄ´¢Äܵç¸ÐÊÇ·ñÓвμÓгÕñÄØ£¿ÏÂÃæÎÒÃÇÀ´·ÖÎöһϣº
ÓÉÓÚÖͺó±ÛϹÜT4µÄ¹Ø¶Ï£¬C4ÂýÂý½¨Á¢Æðµçѹ£¬¶ø×îÖÕµÈÓÚµçÔ´µçѹ£¬¼´UC4=Vin,´ÓͼֽÉÏÎÒÃÇ¿ÉÒÔ¿´µ½£¬UC4Æäʵ¾ÍÊÇBµãµÄµçѹ£¬C4Á½¶ËµçѹµÄÉÏÉý¾ÍÊÇBµãµçѹÓÉ0VÂýÂýµÄÉÏÉý¹ý³Ì£¬¶ø´ËʱAµãµçѹ±»Ç¯Î»µ½0V£¬ËùÒÔÕâ»áµ¼ÖÂUAB<0V£¬Ò²¾ÍÊÇ˵Õâ¸öʱºòÔ±ßÈÆ×éµÄµçѹÒѾ¿ªÊ¼·´Ïò¡£
ÓÉÓÚԱߵçѹµÄ·´Ïò£¬¸ù¾ÝͬÃû¶ËµÄ¹ØÏµ£¬L
S1£¬L
S2ͬʱ³öÏÖÏÂÕýÉϸºµÄ¹ØÏµ£¬´ËʱVD2¿ªÊ¼µ¼Í¨²¢Á÷¹ýµçÁ÷£»¶øÓÉÓÚL
S1ÓëL
fµÄ¹ØÏµ£¬Á÷¹ýL
S1ÓëVD1µÄµçÁ÷²»ÄÜÂíÉϼõÉÙµ½0£¬Ö»ÄÜÂýÂýµÄ¼õÉÙ£»¶øÇÒͨ¹ýVD2µÄµçÁ÷Ò²Ö»ÄÜÂýÂýµÄÔö¼Ó£¬ËùÒÔ³öÏÖÁËVD1ÓëVD2ͬʱµ¼Í¨µÄÇé¿ö£¬¼´¸±±ßÈÆ×éL
S1£¬L
S2ͬʱ³öÏÖÁ˶Ì·¡£
¶ø¸±±ßÈÆ×éµÄ¶Ì·£¬µ¼ÖÂL
f·´Éäµ½Ô±ßÈ¥µÄͨ·±»Çжϣ¬Ò²¾ÍÊÇ˵»áµ¼ÖÂԱ߲μÓгÕñµÄµç¸ÐÁ¿ÓÉÔÀ´µÄ£¨L
f*n
2+ L
r£©Ñ¸ËÙ¼õÉÙµ½Ö»Ê£L
r£¬ÓÉÓÚL
r±È£¨L
f*n
2+ L
r£©Ð¡ºÜ¶à£¬ËùÒÔԱߵçÁ÷»áѸËÙ¼õÉÙ¡£
´Ëʱ£¬Ô±ßµÄU
AB=U
Lr=-V
in£¬U
A=0V, U
B= V
in
ËùÒÔT4ÊÇÁãµçѹ¹Ø¶Ï¡£
¿ª¹ØÄ£Ì¬Î壺гÕñ½áÊø£¬Ô±ßµç¸ÐÏòµçÍøÀ¡ÄÜ
ÈçͼËùʾ£¬µ±C4³äµçµ½VinÖ®ºó£¬Ð³Õñ½áÊø£¬¾Í²»ÔÙÓеçÁ÷Á÷¹ýC3,C4,ת¶øD3×ÔÈ»µ¼Í¨£¬Ô±ßµçÁ÷ͨ¹ýD2—Lr—D3ÏòµçÍøÀ¡ÄÜ£¬ÆäʵÄÜÁ¿À´Ô´ÓÚ´¢´æÔÚLrÖеÄÄÜÁ¿£¬´ËʱԱߵçÁ÷ѸËÙ¼õÉÙ£¬
ip(t)= Ip4- (t-t4)
ÆäÖÐ Ip4ÊÇt4ʱ¿ÌµÄԱߵçÁ÷Öµ
ÔÚt5ʱ¿Ì¼õÉÙµ½0¡£
´ËʱT3Á½¶ËµÄµçѹ½µÎª0V£¬Ö»ÒªÔÚÕâ¸öʱ¼ä½«T3¿ªÆô£¬ÄÇôT3¾Í´ïµ½ÁËÁãµçѹ¿ªÆôµÄЧ¹û¡£
ÔÚÕâÀïÓм¸¸ö¸ÅÄîÐèÒª½éÉÜÏ£º
ËÀÇøÊ±¼ä£º³¬Ç°±Û»òÖͺó±ÛµÄÉÏÏÂÁ½¹Ü£¬¿ªÍ¨»ò¹Ø±ÕµÄ¼ä¸ôʱ¼ä£¬ÒÆÏàÈ«ÇŵçԴÿ¸öÖÜÆÚÓÐ4¸öËÀÇøÊ±¼ä¡£
гÕñÖÜÆÚ£ºÖͺó±ÛÁ½¸ö¹Ü×ӹضÏÖ®ºóµ½³¬Ç°±ÛÁ½¸ö¹Ü×Ó¿ªÍ¨Ö®Ç°£¬´Î¼¶µç¸Ðͨ¹ýÔѱȷ´É仨À´µÄµç¸ÐÓëгÕñµç¸ÐÖ®ºÍÓë¸÷×ÔµÄгÕñµçÈݵÄ2¸öгÕñʱ¼ä£»»¹ÓоÍÊdz¬Ç°±ÛÒѾ¿ªÍ¨£¬Öͺó±ÛÁ½¸ö¹Ü×Ó»»Á÷֮ǰ£¬Ð³Õñµç¸ÐÓë¸÷×ÔµÄгÕñµçÈݵÄ2¸öгÕñʱ¼ä¡£
ÒÆÏà½Ç¶È£ºÖ¸µÄÊdz¬Ç°±ÛÉϹܿªÍ¨µ½Öͺó±ÛϹܵĿªÍ¨µÄʱ¼ä¼ä¸ô»ò³¬Ç°±ÛϹܿªÍ¨µ½Öͺó±ÛÉϹܵĿªÍ¨µÄʱ¼ä¼ä¸ô£¬ÔÙת»»³É½ÇƵÂÊω
ω=2∏f=2∏/T.
¶ÔÓÚ¿ª¹ØÄ£Ì¬5À´Ëµ£¬Ð³ÕñÖÜÆÚÒ»¶¨ÒªÐ¡ÓÚËÀÇøÊ±¼ä£¬·ñÔò¾Í²»ÄÜ´ïµ½Öͺó±ÛµÄZVSЧ¹ûÁË¡£µ«´ËʱµÄгÕñµç¸ÐÊÇûÓдμ¶µç¸Ðͨ¹ýÔѱȷ´É仨À´µÄ£¬ËùÒÔÖ»ÓÐгÕñµç¸Ð²ÎÓëÁËгÕñ£¬ÔÚÉè¼ÆµÄʱºòСÐÄÁË£¬Ð³Õñµç¸ÐÒ»¶¨Òª×ã¹»´ó£¬·ñÔòгÕñÄÜÁ¿²»¹»µÄ»°£¬Ô±ßµçÁ÷¾Í»á»û±ä¡£
ÔÚt5ʱ¿Ì£¬UAB=ULr=-Vin£¬UA=0V, UB= UC1= Vin
¿ª¹ØÄ£Ì¬Áù£ºÔ±ßµçÁ÷´Ó0·´ÏòÔö´ó
ÈçͼËùʾ£¬ÔÚt5ʱ¿Ì֮ǰ£¬T3ÒѾµ¼Í¨£¬ÔÚt5ʱ¿ÌԱߵçÁ÷ipÒѾϽµµ½0£¬ÓÉÓÚûÓÐÁ˵çÁ÷£¬ËùÒÔD2£¬D3×ÔÈ»¹Ø¶Ï¡£
ÔÚt5-t6µÄʱ¼äÄÚ£¬¸±±ßµÄ¶þ¼«¹ÜD1£¬D2»¹ÊÇͬʱµ¼Í¨Á÷¹ýµçÁ÷£¬½«¸±±ßÈÆ×é¶Ì·£¬×è¶ÏÊä³öµç¸Ð·´Éäµ½³õ¼¶µÄ;¾¶£¬´ËʱµÄ¸ºÔصçÁ÷»¹ÊÇÓɴμ¶µç¸ÐÓëÊä³öµçÈÝÌṩ£»Í¬Ê±£¬ÓÉÓÚԱߵÄT2£¬T3ÒѾµ¼Í¨£¬Ô±ßµçÁ÷ipÁ÷¹ýT3--Lr--T2,ÓÖÒòΪLrºÜС£¬ËùÒÔԱߵçÁ÷ip¾Í»á·´Ïò¼±¾çÔö´ó¡£
¼´ ip(t)= - (t-t5)
ÔÚt6ʱ¿Ì£¬ip´ïµ½×î´ó£¬µÈÓÚ¸±±ßµÄµç¸ÐµçÁ÷ÕÛËãµ½³õ¼¶µÄµçÁ÷
¼´ ip(t6)= - ILf(t6)/n
ÔÚÕâ¸ö¿ª¹ØÄ£Ì¬£¬Ô±ßµçÁ÷ÊDz»´«µÝÄÜÁ¿µÄ£¬µ«¸±±ßÈ´´æÔÚ×ÅÒ»¸ö¾çÁҵĻ»Á÷¹ý³Ì£¬Í¨¹ý¸±±ß¶þ¼«¹ÜVD1µÄµçÁ÷ѸËÙ¼õÉÙ£¬VD2µÄµçÁ÷ѸËÙÔö´ó£¬ÔÚt6ʱ¿Ì£¬Í¨¹ýVD1µÄµçÁ÷¼õÉÙµ½0£¬Í¨¹ýVD2µÄµçÁ÷µÈÓÚµç¸ÐµçÁ÷ILf¡£
ÔÚt6ʱ¿Ì֮ǰ£¬Ô±ßµÄUAB= ULr=-Vin£¬UA=0V, UB= Vin
´ïµ½t6ʱ¿ÌÖ®ºó£¬ÒÆÏàÈ«ÇŵÄÕý°ëÖÜÆÚ¹¤×÷½áÊø£»²¢¿ªÊ¼¸º°ëÖÜÆÚ¹¤×÷£¬Æä¹¤×÷ÔÀíÓëÕý°ëÖÜÆÚÏàËÆ£¬ÏÂÃæÀ´×ö½øÒ»²½µÄ·ÖÎö£º