This work addresses the design and analysis of the discrete longitudinal
autopilot for application to the bank-to-turn (BTT) missiles.
In the development the classical design and analysis were reviewed
using the continuous uncoupled pitch channel autopilot for circular airframe.
Then,applying analog-to-digital conversion, the corresponding discrete
autopilot was designed. The performance of both continuous and discrete
open loop systems was analyzed according to the desired requirements.
In the following section, utilizing modern control design techniques for
the discrete pitch channel autopilot, the control law was designed,
assuming availability of all the states and taking the desired poles to be at
the same place as in the classical design. Therefore the discrete state-feedback
autopilot was obtained and analyzed. The next step was the design
of an estimator which estimates the entire state vector, given
measurements of the portion of the state. The performance of the estimator
was analyzed too.
Finally coupling the discrete pitch and roll channel autopilots the
overall performance of the discrete system was obtained and analyzed. The
resulting design was also proved to be robust.http://archive.org/details/effectsofdigital00karaLieutenant, Hellenic NavyApproved for public release; distribution is unlimited
