functional disturbance observer (discrete-time linear systems)

Code for my Automaitca(2018) paper

%% This script implements the algorithm for the following work
% Su, Jinya, and Wen-Hua Chen. Further results on “Reduced order disturbance
% observer for discrete-time linear systems”, Automatica, in press, 2018.
% you may also be interested in the following paper, where the simulation is also available.
% Su, Jinya, Wen-Hua Chen, and Jun Yang. "On relationship between
% time-domain and frequency-domain disturbance observers and its applications."
% Journal of Dynamic Systems, Measurement, and Control 138.9 (2016): 091013.
% Find the code in the following link
% https://uk.mathworks.com/matlabcentral/fileexchange/57825-functional-disturbance-observer-based-control

% if you feel it useful, please support the research by citing the papers.

% Thank you a lot. Any prolbem, please contact me at [e-mail], or
% [e-mail]. Although i am now doing UAV for precision
% agricutlure, i will try my best to get back to you.