电流预测控制simulink仿真，帮忙解释一下！！！！

xueshoudaoke

最近在做电流预测控制算法，在本论坛找到了这个模型，想研究一下，有些问题需要大家给予解释一下，在此谢谢大家了！！！！！我把预测控制器的代码给贴在下面，谁能给我解释一下？
# x# H6 J8 q' Q/ d; y# F; E+ \" y%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% This function contains the algorithm for the predictive current control
% of a two-level voltage source inverter.
9 n% x: z' @$ L4 E8 d1 v; w% Inputs:
/ c: R2 E- k2 s: k%   I_ref   := Two-element vector containing the reference current in
0 ~! W- p" F9 v) ]% x! r6 T%              alpha-beta coordinates.
%   I_meas  := Two-element vector containing the measured current in
  e$ ~( D$ ]( ?1 b%              alpha-beta coordinates.
4 G& r1 `! L' ]4 u5 b% Parameters (defined in the file parameters.m):
%   R       := Load resistance
%   L       := Load inductance
8 v. h  p/ ^. Q/ A5 H3 u% s7 r%   Ts      := Sampling time
% y5 U$ d- k# j9 A5 p%   v       := Eight-element vector containing the voltage vectors that can
%              be generated by the inverter, in alpha-beta coordinates.
" i. S" J+ ^& k5 N%   states  := Eight-by-three array containing the switching states for
%              each voltage vector.
/ }. l5 {$ U+ K* j% Outputs:
%   [Sa, Sb, Sc] := switching state corresponding to the optimum vector to
* Z- w! B* T9 x4 C9 b%                   be applied in the next sampling period.
' o9 z  ?5 E* d; y0 b%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

8 _, V9 x6 O  [5 Z/ }6 Wfunction [Sa,Sb,Sc] = control(I_ref,I_meas,R,L,Ts,v,states)
% Optimum vector and measured current at instant k-1
  Y& |" ]( k5 {1 S/ u- Hpersistent x_old i_old
% Initialize values
if isempty(x_old), x_old = 1; end
if isempty(i_old), i_old = 0+1j*0; end
g = zeros(1,8);
% Read current reference inputs at sampling instant k
ik_ref = I_ref(1) + 1j*I_ref(2);
$ L' ^9 h* J. C( W" i. s% Read current measurements at sampling instant k
ik = I_meas(1) + 1j*I_meas(2);
5 ?0 R" s9 g$ m/ X' I& d' j5 |) _% Back-EMF estimate
9 C# ?5 B/ s' w0 e. ?9 E  h8 ge = v(x_old) - L/Ts*ik - (R - L/Ts)*i_old;
; D; Q1 T% J" N7 M8 K* X9 O% Store the measured current for the next iteration
3 c- z8 B' O/ ~  A: \i_old = ik;
for i = 1:8
    % i-th voltage vector for current prediction
6 t9 U+ X- V" t( p* ~& i    v_o1 = v(i);
    % Current prediction at instant k+1
- g8 E7 R" @6 z- A) e0 V/ P) L! C    ik1 = (1 - R*Ts/L)*ik + Ts/L*(v_o1 - e);
    % Cost function
    g(i) = abs(real(ik_ref - ik1)) + abs(imag(ik_ref - ik1));
6 B, D  y1 S. e, P2 Wend
% Optimization
% @1 J$ Q7 S4 j3 C6 {[~,x_opt] = min(g);
1 V/ G, N. T8 Q/ Z7 z. S! _  |% Store the present value of x_opt
5 h0 ?5 }) d7 V+ {/ Sx_old = x_opt;
% Output switching states
8 L  r9 L* d/ C8 q6 a0 FSa = states(x_opt,1);
Sb = states(x_opt,2);
( t  ?, i6 m0 l( h& u$ hSc = states(x_opt,3);