clc
Yd=inline('[(YY(2)-1)*2*pi*50;(1-(1.47*1/2.82)*sin(YY(1)))/11.28]','t','YY');
[t,YY]=ode45(Yd,0.3,[31.54*pi/180;1])
x=YY(:,1);
y=YY(:,2);
plot(t,x*180/pi);
xlabel('t/s'),ylabel('delta/deg')