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？
; Y* e) ]! K7 D3 H) C# p%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
' S& @: P% o1 Q2 J% This function contains the algorithm for the predictive current control
% of a two-level voltage source inverter.
; A$ G8 E9 q0 q+ l: l0 j! F% Inputs:
7 N1 c, a4 h, G& E%   I_ref   := Two-element vector containing the reference current in
%              alpha-beta coordinates.
%   I_meas  := Two-element vector containing the measured current in
/ V, D" k% j8 R1 r% A' g% @* `* O3 U%              alpha-beta coordinates.
# @) Y/ F' K1 s* ^* q3 n6 }% Parameters (defined in the file parameters.m):
; H/ d9 i$ h* n$ k( e( Y. S%   R       := Load resistance
%   L       := Load inductance
" k& I9 z* w; j4 Z. g%   Ts      := Sampling time
%   v       := Eight-element vector containing the voltage vectors that can
  G1 L- a% Q+ k# V: }%              be generated by the inverter, in alpha-beta coordinates.
+ W5 G0 r$ d% j  H4 T* h%   states  := Eight-by-three array containing the switching states for
%              each voltage vector.
% Outputs:
%   [Sa, Sb, Sc] := switching state corresponding to the optimum vector to
%                   be applied in the next sampling period.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

function [Sa,Sb,Sc] = control(I_ref,I_meas,R,L,Ts,v,states)
% Optimum vector and measured current at instant k-1
( r6 k) V* k5 a7 v1 lpersistent x_old i_old
% Initialize values
if isempty(x_old), x_old = 1; end
if isempty(i_old), i_old = 0+1j*0; end
- @* L6 M8 O2 `0 B) O7 {- V9 U! k# ]: Zg = zeros(1,8);
% Read current reference inputs at sampling instant k
ik_ref = I_ref(1) + 1j*I_ref(2);
8 e; o; x3 b2 o. M, c, [& x) f% Read current measurements at sampling instant k
ik = I_meas(1) + 1j*I_meas(2);
% Back-EMF estimate
e = v(x_old) - L/Ts*ik - (R - L/Ts)*i_old;
% Store the measured current for the next iteration
3 m5 ?; H: y! R6 f8 l, zi_old = ik;
for i = 1:8
    % i-th voltage vector for current prediction
+ B8 U* h5 _) R+ ]% W    v_o1 = v(i);
( l4 h5 w* ^) h7 A6 s; h    % Current prediction at instant k+1
: ~9 L, e& U- X/ y    ik1 = (1 - R*Ts/L)*ik + Ts/L*(v_o1 - e);
4 y' Z& ~/ u! Z, k; n# @! N, u    % Cost function
' t0 L  K3 z0 F% c$ n    g(i) = abs(real(ik_ref - ik1)) + abs(imag(ik_ref - ik1));
* o# ?4 q3 t1 ]2 ^end
% Optimization
+ z3 X5 k7 p; s5 i4 M# C[~,x_opt] = min(g);
% Store the present value of x_opt
8 q  X) O$ F' {4 o( d0 ]( k% Rx_old = x_opt;
2 X) E& L* R# M& E& ]( {% Output switching states
Sa = states(x_opt,1);
1 j" \9 T) ^* c/ GSb = states(x_opt,2);
Sc = states(x_opt,3);