曝光臺 注意防騙 網曝天貓店富美金盛家居專營店坑蒙拐騙欺詐消費者

┃                                                                                    ┃'0      a ┃
┣━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╋━━━━━┫
┃LI   D  -5  - -3 \I --   i    t- zc -*                                   ~- 2.5435  ┃          ┃
┃5'1278/. _j                                                                         ┃          ┃
┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┻━━━━━┛
Fig. 536    Root-Iocii for the control system of Example 5.10-
~,:r
           I
500           PERFORMANCE, STABILI-fY, DYNAMICS, AND CONTROL
Root-Locus of PD Compensated System
     ReaIAxis
                       c)
              Fig. 5.36    Root-Iocii for the control system of Example 5.lO,continued.
the closed-loop pole locations are -0.8299 +  j1.9426 and -6.3402. Because the
third pole located at -6.3402 is farther from the second-order poles, we can use the
second-order approximation. With this assumption, the times for peak amplitude
for the basic system Tp and that for the compensated system Tpc are given by
                       7r
                          Tp = tOd
                       rr
                                                          = ~9~426 = 1.6172 s
                                      Tp. = fj = 0.5391s
Then,
cocic = T
   7r
= 0 539~
- 5.8278
LINEAR SYSTEMS, THEORY, AND DESIGN: A BRIEF REVIEW       501
                                   Root-Locus of lead-lag compensated system.
                                                                                    Real Axis
                 d)
Fig. 5.36    Root-Iocii for the control system ofExample 5.10, continued.
             . COnc= [r?-
                                                                                        1
　
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