曝光臺(tái) 注意防騙 網(wǎng)曝天貓店富美金盛家居專(zhuān)營(yíng)店坑蒙拐騙欺詐消費(fèi)者

the desired handling qualities. It was not possible to go into all the details oflinear
 systems theory. Readers interested in getting more detailed information on control
systems may refer elsewhere.l-3
References
IOgata, K., Modem Conrrol Engineering, Prentice-Hall, Englewood Cliffs, NJ,  1986.
2Norman, S., and Nisc, N. S,, Control System Engineering, Benjamin/Cummings, I 992.
3Kuo, B., Automatic Control Systems, 4th ed., Prentice-Hall, Englewood Cliffs, NJ,
1982.
    4Pro_MATIAB for Sun Workstations, The MathWorks, Natick, MA, Jan.  1990
5
g,
g
o
= [-,/
-6is Og5]
532           PERFORMANCE, STABILITY, DYNAMICS, AND CONTROL
   Problems
5.1   Sketch the Bode plot for the open-loop systems with
                   50
                                  (a)  G(s) = s~s+5~
                                                                                                25(s + 2)
                          (b)  G(s) = ~s+3~s+5~s+7)
5.2    Using Routh's criterion, examine the stability ofthe closed-loop system with
a characteristic polynomial grven by
                             (a)  S4+5S3+3S2+s+2 = O
                                (b)  S4 +2S3 +O.OOIS2 +3s +4 = 0
                                           (C)  S4 +4S3 +7s +2 = O
     [Answer: (a) Two sign changes, unstable; (b) Two sign changes, unstable; and
 (c) Two sign changes, unstable.]
 5.3    Sketch the root-locus for a unity feedback system with
                                                        k(s + 3)
                               (a)  G(s) = s~s+2~s+4)
                                                        k(s + 1)
                           (b)  G(s) = s~s+2~s+3 (s+7)
Determine the value of the gain k when the closed-loop system in (b) becomes
unstable.
5-4   Sketch the root-locus for a unity feedback system with
                                                                                                    ;)(s + 7)
                                             G(s) = k~+~3~ 1
　
中國(guó)航空網(wǎng) m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：PERFORMANCE, STABILITY, DYNAMICS, AND CONTROL3(89)