¥Ñ Eclipse ©ó ¬P´Á¤T ¤K¤ë 10, 2005 11:47 am
°ò¥»¤W¥un¯à±N¹Ï§Î¥H¨ç¼Æªí¥Ü,¨º»ò³Ñ¤Uªº´N¥u¬OLaplaceÂà´«¹Bºâ
n±N¤£³sÄò¹Ï§Î¥H¤@Ó¨ç¼Æªí¥Ü,¨º»ò»Ýn¤Þ¤J¤@step function,
Let H(t) is a step function
Then H(t)¡Ý 1, t¡Ù0 , if t<0, then H(t)=0,
Step function ¨ú©Ô¦¡Âà´« L[H(t)]= 1/s
(1)
3¬q¨ç¼Æ¦p¤U
when t=0~1, f(t)=t, when t=1~2 , f(t)=1, when t¡Ù2 , f(t) =0
¤Þ¤Jstep function «h
f(t)= t*[H(t)-H(t-1)]+H(t-1)-H(t-2) + 0 ¡K¡K¡K¡K¡K¡K¡K..(1)
(2)
2¬q¨ç¼Æ¤J¤U
f(t)=b*t , 0¡Øt¡Ø1 , f(t)=2b-b*t , 1¡Øt¡Ø2
¤Þ¤Jstep function «h
f(t)=b*t*[H(t)-H(t-1)]+(2b-b*t)*[H(t-1)-H(t-2)]¡K¡K¡K¡K¡K¡K..(2)
(3)
f(t)=(b/a)*t , 0¡Øt¡Øa , f(t)=0, t¡Ùa
¤Þ¤Jstep function «h
f(t)=(b/a)*t*[H(t)-H(t-a)]¡K¡K¡K¡K¡K¡K¡K¡K¡K..(3)
¥Ñ¥H¤W3¦¡¨ú©Ô¦¡Âà´«,¹B¥ÎLaplace ²Ä¤@¤Î²Ä¤G¥²¾©w²z¥i±o¸Ñ
¦b³o¨S¸Ñ¥Xµª®×ªºì¦]¬O
1. §Ú»{¬°§A¥u¬O¥d¦bµLªk±N¹Ï§ÎÂର¨ç¼Æ,©Ò¥H¥u¦C¥X¨ç¼Æ³Ñ¤Uªº§AºCºC¥h©Ô
2. ¨ä¹ê³o¬O«ÂI,¦]¬°·í§¹§LÀY¸£°h¤Æ¤S¤Ó¤[¨S±µÄ²©Ò¥H¤£¤Ó·|©Ô¤F,¦Ó¤W¯Z®É¶¡¤]¤£¤è«K½¾\®ÑÄy,©Ò¥H¯dµ¹§A¦Û¤v¥h©Ô
¦pªG¹ï©ó3Ó¦¡¤l¦p¦ó¨ÓªºÁÙ¬O¤£ÁA¸Ñ,§Ú·Q§A¬Ý¬Ý§Aªº®ÑÀ³¸Ó·|¦³¤¶²Ð,²¦³º¦³¨ÇªF¦è¥Î¹q¸£¥´¦r«ÜÃøªí¹F¤]»¡¤£²M·¡¡K..