340 Practical MATLAB® Applications for Engineers
Nyquist diagram Nyquist diagram
Nyquist plot without w
1.5
0.5
−0.5
− 1
−1.5
− 1 −0.5 0 0.5 1
0
1
Imaginary axis Imaginary axis
Real axis
1.5
0.5
−0.5
− 1
−1.5
− 1 −0.5 0 0.5 1
0
1
Real axis
Nyquist plot with w
(w = −1:0 4:10)
FIGURE 4.6
Nyquist plots of R.4.69.
Bode plots with w (w = −1:0.4:10)
Bode diagram
10
− 10
− 20
− 30
− 45
− 90
− 135
− 180
− 225
10 −^1100
0
0
Frequency (rad/s)
Magnitude (dB)
Phase (degree)
Bode diagram
20
0
− 20
− 40
− 60
− 80
Magnitude (dB)
Bode plots without w
Phase (degree)
0
− 45
− 90
− 135
− 180
− 225
10 −^1100101102
Frequency (rad/s)
FIGURE 4.7
Bode plots of R.4.69.