?? oscillation.py
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import mathimport qcaddef start(str): t=0.0 # time (counter) res=256.0 # resolution of curve x_m=100.0 # amplitude t_m=400.0 # max t value beta=0.04 # attenuation m=1.0 # mass w_d=0.05 # angular frequency without attenuation f=0.0 # function value fo=32000 # old function value step=t_m/res # x-axis: qcad.rsPyAddLine(0, 0, t_m, 0) #while t<2*math.pi: # qcad.rsPyAddLine(n, 0, n, -0.05) # t+=math.pi/4 # y-axis: qcad.rsPyAddLine(0, -x_m, 0, x_m) # oscillation fo=32000 t=0.0 while t<t_m: f = x_m * math.exp((-beta/(2.0*m))*t) * math.sin(w_d * t) if (fo!=32000): qcad.rsPyAddLine(t-step, fo, t, f) t+=step fo=f # x_m: fo=32000 t=0.0 while t<t_m: f = x_m * math.exp((-beta/(2.0*m))*t) if (fo!=32000): qcad.rsPyAddLine(t-step, fo, t, f) qcad.rsPyAddLine(t-step, -fo, t, -f) t+=step fo=f return(1)?? 快捷鍵說明
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