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APPENDIX E Frequency response analysis of linear systems    287
































                    FIG. E.4
                    Asymptotic Bode plots of G(s)¼(s+1)/(s+0.1)(s+10).


                                       Bode plots of G(s) = (s + 1)/[(s + 0.1)(s + 10)]
                          0
                        –10
                       Magnitude (dB)  –20


                        –30
                        –40
                        –50
                          0


                       Phase (deg)  –45





                        –90
                         10 –2         10 –1        10 0         10 1         10 2
                                               Frequency (rad/s)
                    FIG. E.5
                    Exact Bode plots of G(s)¼(s+1)/[(s+0.1)(s+10)].
   280   281   282   283   284   285   286   287   288   289   290