Page 28 - Control Theory in Biomedical Engineering
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0.8
                            0.78
                              0.76
                                0.74
                               0.07
                              0.08
                             0.09
                            0.1
                    10
                           –2
                       0
                       z
                               10
                                 –5 0.06  5  x  0  0.05  y  0.72  0.04  x  0.7  0.03  Limit torus  No attractor  systems.
                                  –10
                                   –15  Limit cycle
                                   0
                                 5                                physiological
                                10  y                    20
                               15                         10      by
                   10  5  0  –5  –10  –15  20
                        z                                  0  x   exhibit
                                                            –10
                                                            –20
                               4                                Strange attractor  behaviors
                                                            –10
                               2
                                                           0
                                0                           y
                                 x
                                 –2                      10       dynamic
                                      Fixed point  z
                                 –4          10  5  0  –5  –10  –15  20
                                  –6
                                  0                               possible
                                 5
                                                                  Five
                                 y
                               10
                                                                  7
                    6  4  2  0  –2  –4  15
                        z                                         Fig.
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