csens

CSENS Fractional system sensitivity function frequencies.

      Computes the frequencies for the complementary senitivity function
      and sensitivity function for the fractional control system given
      by Gct(jw)=G(jw)*C(jw).

      The complementary sensitivity function is given by

              |  C(jw)*G(jw)  |
      T(jw) = | ------------- | [dB]
              | 1+C(jw)*G(jw) |

      And the sensitivity function is given by

              |       1       |
      S(jw) = | ------------- | [dB]
              | 1+C(jw)*G(jw) |

      Frequencies sought adhere to the rules:
      For all w >= wt [rad/sec] -> | T(jwt) | = A [dB]
      For all w <= ws [rad/sec] -> | S(jws) | = B [dB]

      Usage:   [WT, WS, W] = CSENS(GCT, A, B)

      where    WT, WS - frequencies discussed above,
               W - array with the whole frequency range [rad/s],
               A<0, B<0 - noise/disturbance attenuation in dB.

               [WT, WS] = CSENS(GCT, A, B, W)
               
      See also: fotf, freqresp, bode, logspace