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DISTURBANCE ACCOMMODATION CONTROL SYSTEM DESIGN
STABILITY AND TRANSIENT RESPONSE
4 other sections not shown
1-generalized amplitude arc sec rms arc sec2 sec3 asymptotic stability axis cancellation characteristic equation closed-loop system coefficients COFACTORS constant covariance analysis covariance matrix DEFINITION OF SYMBOLS density matrix deterministic disturbance dipole disturbance accommodation controller disturbance frequency disturbance torques eigenvalues equation A-17 external disturbances external torques Figure free parameters frequency response function gravity-gradient torque guidance sensor Hurwitz matrix iftE improvement in pointing Large Space Telescope linear LST and DASOC LST model LST spacecraft magnetic torque Marshall Space Flight matrix equation mean vector noise excitation obtained optimal characteristic frequency parameter matrix PI2C pitch motion pointing stability Proportional Controller rad/sec reaction wheels sensor noise sinusoidal disturbance solar pressure torques solution process Space Flight Center spectral density analysis stability conditions standard deviation oq steady-state response stochastic Stochastic differential equations Symbol Definition system 36 Table transient response twice orbital rate various characteristic frequencies vector in frame vector LST white noise process