= [1, 2]
den_unstable = [1, -1.5, 0.5]
sys_unstable = tf(num_unstable, den_unstable, dt=1)
poles_unstable...= np.arange(0, 20)
y_unstable = signal.lfilter(num_unstable, den_unstable, [1] + [0]*(len(t_unstable...= [1, 2]
den_unstable = [1, -1.5, 0.5]
sys_unstable = tf(num_unstable, den_unstable, dt=1)
poles_unstable...= sys_unstable.pole()
print("\n不稳定系统极点:", poles_unstable)
print("不稳定系统稳定性判断:")
if all(np.abs(poles_unstable...= signal.lfilter(num_unstable, den_unstable, [1] + [0]*(len(t_unstable)-1))
plt.figure(figsize=(10,