# phase_app.ode # phase model for two coupled oscillators # using numerically computed H h(x)=3.34-3.05*cos(x)-.29*cos(2*x)+3.61*sin(x)-.33*sin(2*x) th1'=w1+a*h(th2-th1) th2'=w2+a*h(th1-th2) par w1=1,w2=1,a=.1 @ total=100 @ fold=th1,fold=th2 @ xlo=0,ylo=0,xhi=6.3,yhi=6.3,xp=th1,yp=th2 done