U I
ω.
, . ( , Ch. P. Steinmetz).
:
,
( ), . 2.8.
~ , ( ) .
-, ω. , , :
(2.9)
, φ - .
- , ( ) . , ( ), .
( ) :
(2.10)
. 2.8 . ω t = 0, 2 π .. e iωt = 1. ω. , , e iωt = ,
, .
, e iωt, .
.
(, ).
clc; %
FigureColor=[1,1,1]; hFigure=gcf; set(hFigure, 'Color', FigureColor) %
title('exp(+ i \omega t)','FontSize', 28); %, omega .
tic;pause(2);toc; %
for t = 0:0.027:2*pi; axis([-1 1 -1 1]) %
x=-sin(t); y=cos(t); h = plot(x,y,'k.'); hold on; pause(0.01)
end; pause(2)
clf; %
title({' '; 'exp( i \omega t)'}, 'FontSize', 28); %, omega .
|
|
tic;pause(2);toc; %
for t = 0:0.028:2*pi; axis([-1 1 -1 1]) %
x=sin(t); y=cos(t); h = plot(x,y,'ro'); hold on; pause(0.01)
end; pause(1); clf;
, :
. (2.11)
(. (3.20), (3.21)).