Jsh. Tsai et al., DIGITALLY REDESIGNED PAM CONTROLLER AND IDEAL STATE RECONSTRUCTOR FORINPUT TIME-DELAY NONDELAY SYSTEMS WITH NONSYNCHRONOUS SAMPLING/, Circuits, systems, and signal processing, 16(3), 1997, pp. 325-347
This paper develops a new digitally redesigned pulse-amplitude modulat
ed (PAM) controller for a continuous-time input time-delay/nondelay sy
stem with nonsynchronous sampling. The concept of the law of the mean
from the input integral calculus is utilized for the development of th
e equivalent digital predictor controllers from the available analog p
redictor controllers. As a result, the digitally controlled states clo
sely match the original continuous-time states. To implement the devel
oped discrete-time state-feedback PAM controller, this paper also deve
lops an ideal discrete-time state using nonsynchronously sampled input
-output data of the continuous-time input delay/nondelay system withou
t establishing a dynamic observer.