📄 ch7_1_2.htm
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<HTML><HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <META NAME="GENERATOR" CONTENT="Mozilla/4.0b3 [en] (Win95; I) [Netscape]"> <TITLE> ¤Gºû¤º´¡ </TITLE><! Made by Html Translation Ver 1.0></HEAD><BODY BACKGROUND="bg0000-1.gif" tppabs="http://webclass.ncu.edu.tw/~junwu/bg0000.gif"><H1><FONT COLOR="#0000FF">7.1.2 ¤Gºû¤º´¡</FONT></H1><HR><BR><BR>¤Gºû¤º´¡»P¤@ºû¤º´¡ªº®t§O¬O­n¤º´¡ªº¼Æ¾Ú¬O¤Gºû¡A§Y¬O<BR><BR><IMG SRC="img00007-2.gif" tppabs="http://webclass.ncu.edu.tw/~junwu/img00007.gif" HEIGHT=22 WIDTH=300> <BR><BR>MATLABªº¤Gºû¤º´¡¨ç¼Æ¬O<FONT COLOR="#FF0000">interp2</FONT>¡A¨ä»yªk¬°<FONT COLOR="#FF0000">interp2(X,Y,Z,XI,YI)</FONT>¡A¨ä¤¤ªº<FONT COLOR="#FF0000">X,Y,Z</FONT>¬O­ì¤wª¾ªº¼Æ¾Úªº<I>x,y,z</I>­È¡A³o²Õ¾Ú¾Úªº·N¸q¬O<FONT FACE="Times New Roman"><I>Z=Z(X,Y)</I></FONT>¡C¥t¥~<I>Z</I> ¯x°}¤j¤p¥²¶·¬O<IMG SRC="img00008-2.gif" tppabs="http://webclass.ncu.edu.tw/~junwu/img00008.gif" HEIGHT=17 WIDTH=52>¡A¦Ó<FONT COLOR="#FF0000">XI,YI</FONT>«h¬O­n¤º´¡ªº¼Æ¾ÚÂI¡C¦pªG»yªk¬O<FONT COLOR="#FF0000">interp2(X,Y,Z,XI,YI,'method')</FONT>¡A<FONT COLOR="#FF0000">method</FONT>¥i¥H³]©w¤º´¡¤èªk¦³<FONT COLOR="#FF0000">linear</FONT>,<FONT COLOR="#FF0000">cubic</FONT>¡A¤À§O¬O¤@¦¸©M¤T¦¸¤èµ{¦¡¡A¨ä¤¤¹w³]¤èªk¬O<FONT COLOR="#FF0000">linear</FONT>¡C§Ú­Ì¥H¤U­±ªº¨Ò¤l»¡©ú¡C°²³]¦³¤@­Ó¨T¨®¤ÞÀºªºÂà³t¡]³æ¦ì¬°rpm¡^¡B·Å«×»P®É¶¡¡]³æ¦ì¬°sec¡^ªº¶q´ú­È¦p¤U<TABLE BORDER ><TR><TD WIDTH="66">time </TD><TD COLSPAN="3" WIDTH="224">speed </TD></TR><TR><TD WIDTH="66">0 </TD><TD WIDTH="72">2000 rpm </TD><TD WIDTH="76">3000 rpm </TD><TD WIDTH="76">4000 rpm </TD></TR><TR><TD WIDTH="66">1 </TD><TD WIDTH="72">20 </TD><TD WIDTH="76">110 </TD><TD WIDTH="76">176 </TD></TR><TR><TD WIDTH="66">2 </TD><TD WIDTH="72">60 </TD><TD WIDTH="76">180 </TD><TD WIDTH="76">220 </TD></TR><TR><TD WIDTH="66">3 </TD><TD WIDTH="72">68 </TD><TD WIDTH="76">240 </TD><TD WIDTH="76">349 </TD></TR><TR><TD WIDTH="66">4 </TD><TD WIDTH="72">77 </TD><TD WIDTH="76">310 </TD><TD WIDTH="76">450 </TD></TR><TR><TD WIDTH="66">5 </TD><TD WIDTH="72">110 </TD><TD WIDTH="76">405 </TD><TD WIDTH="76">503 </TD></TR></TABLE>¨ä¤¤·Å«×ªº¼Æ¾Ú±q<FONT FACE="Times New Roman">20<SUP>o</SUP>C</FONT>Åܤƨì<FONT FACE="Times New Roman">503<SUP>o</SUP>C</FONT>¡A¦pªG­n¦ô­p¦b<FONT FACE="Times New Roman">t=2.6,sec, rpm=2500 </FONT>ªº·Å«×¡A¥i¥H¤U¦C«ü¥O­pºâ<BR><BR><FONT COLOR="#FF0000"><FONT FACE="Times New Roman">>> d2(:,1)=[0 1 2 34 5]'; % </FONT>±N®É¶¡¿é¤J</FONT> <BR><BR><FONT COLOR="#FF0000"><FONT FACE="Times New Roman">>> d2(:,2)=[2000 2060 68 77 110]'; % </FONT>±N<FONT FACE="Times New Roman"> rpm=2000</FONT>ªº·Å«×¿é¤J</FONT> <BR><BR><FONT COLOR="#FF0000"><FONT FACE="Times New Roman">>> d2(:,3)=[3000 110180 240 310 405]'; % </FONT>±N<FONT FACE="Times New Roman"> rpm=3000</FONT>ªº·Å«×¿é¤J</FONT> <BR><BR><FONT COLOR="#FF0000"><FONT FACE="Times New Roman">>> d2(:,4)=[4000 176220 349 450 503]'; % </FONT>±N<FONT FACE="Times New Roman"> rpm=4000</FONT>ªº·Å«×¿é¤J</FONT> <BR><BR><FONT COLOR="#FF0000"><FONT FACE="Times New Roman">>> t=d2(2:6,1); % </FONT>¿ï¾Ü°µ¤º´¡ªº®É¶¡</FONT> <BR><BR><FONT COLOR="#FF0000"><FONT FACE="Times New Roman">>> rpm=d2(1,2:4); %</FONT>¿ï¾Ü°µ¤º´¡ªº<FONT FACE="Times New Roman">rpm</FONT></FONT> <BR><BR><FONT COLOR="#FF0000"><FONT FACE="Times New Roman">>> temp=d2(2:6,2:4);% </FONT>¿ï¾Ü°µ¤º´¡ªº·Å«×</FONT> <BR><BR><FONT COLOR="#FF0000"><FONT FACE="Times New Roman">>> temp_i=interp2(rpm,t,temp,2500,2.6)% </FONT>¥H½u©Ê¤º´¡¨M©w<FONT FACE="Times New Roman">rpm=2500,t=2.6 </FONT>ªº·Å«×</FONT> <BR><BR><FONT FACE="Times New Roman"><FONT COLOR="#FF0000">temp_i =</FONT></FONT> <BR><BR><FONT FACE="Times New Roman"><FONT COLOR="#FF0000">140.4000</FONT></FONT> <BR><HR><A HREF="ch7_1_1.htm" tppabs="http://webclass.ncu.edu.tw/~junwu/ch7_1_1.htm"><IMG SRC="lastpage-1.gif" tppabs="http://webclass.ncu.edu.tw/~junwu/lastpage.gif" BORDER=0 ></A> <A HREF="ch7_1_3.htm" tppabs="http://webclass.ncu.edu.tw/~junwu/ch7_1_3.htm"><IMG SRC="nextpage.gif" tppabs="http://webclass.ncu.edu.tw/~junwu/nextpage.gif" HSPACE=10 BORDER=0 ></A> <A HREF="index.html" tppabs="http://webclass.ncu.edu.tw/~junwu/index.html"><IMG SRC="outline.gif" tppabs="http://webclass.ncu.edu.tw/~junwu/outline.gif" HSPACE=6 BORDER=0 ></A> <BR><FONT COLOR="#AA55FF"><FONT SIZE=-1>¤W¤@­¶¡@¤U¤@­¶¡@Á¿¸q¤jºõ</FONT></FONT> </BODY></HTML>⌨️ 快捷键说明
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