zonghemoxing2.m

内燃机转子仿真

clear all;
clc;
close all;
format long;
a=pi/4;
h=0.001;
t=1;
w=60;
bt=rem(t,h);
bbt=t-bt;
n1=bbt/h;
    kn=0;
for i=1:n1
    t(:,i)=(i-1)*h;


    oo=w*t(:,i);
   
    if oo<=2*kn*pi+0.5*pi-a&oo>=2*kn*pi

        ff(:,i)=1;
    elseif oo<=2*kn*pi+0.5*pi+a&oo>2*kn*pi+0.5*pi-a

        ff(:,i)=0.5*(1+cos((0.5*(oo-0.5*pi+a)/a)*pi));
    elseif oo<=2*kn*pi+3*pi/2-a&oo>2*kn*pi+0.5*pi+a

        ff(:,i)=0;
    elseif oo<=2*kn*pi+3*pi/2+a&oo>2*kn*pi+3*pi/2-a

        ff(:,i)=0.5*(1-cos((0.5*(oo-3*pi/2+a)/a)*pi));
    %elseif oo>2*k*pi+3*pi/2+a&oo<=2*pi+2*k*pi
    elseif 2*kn*pi+3*pi/2+a<oo<=2*pi+2*kn*pi
         ff(:,i)=1;
    end
     if oo>2*(kn+1)*pi
        kn=kn+1;
    end
end
plot(t(:),ff(:));