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？
0 h, f% |) T2 E3 s%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
; l+ k2 `6 }6 a& b# c) H% This function contains the algorithm for the predictive current control
$ y$ Z& k; ]; H% S% of a two-level voltage source inverter.
% Inputs:
6 G7 i- F) y0 a: v, w& }7 @; i%   I_ref   := Two-element vector containing the reference current in
%              alpha-beta coordinates.
%   I_meas  := Two-element vector containing the measured current in
2 [. c. B- P' Q%              alpha-beta coordinates.
' f( K4 x: T% n, S( b% Parameters (defined in the file parameters.m):
%   R       := Load resistance
%   L       := Load inductance
%   Ts      := Sampling time
. s. k6 f( f  Z' k/ |%   v       := Eight-element vector containing the voltage vectors that can
- _1 ]4 j- x: u7 T% B; Z%              be generated by the inverter, in alpha-beta coordinates.
%   states  := Eight-by-three array containing the switching states for
2 S* i" E1 j9 w9 ^( s: |%              each voltage vector.
- o! K5 e" x) g5 l% Outputs:
( f3 B( z7 D! V; }, r0 n$ K! Z  s%   [Sa, Sb, Sc] := switching state corresponding to the optimum vector to
# `! p0 c: |" }; S%                   be applied in the next sampling period.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
; D& l; A6 G9 H0 m2 C
( m' V3 ~- j/ G0 P7 Qfunction [Sa,Sb,Sc] = control(I_ref,I_meas,R,L,Ts,v,states)
* h) r$ O; z5 }& ~$ K* }% Optimum vector and measured current at instant k-1
persistent x_old i_old
1 }6 w0 c. |& p3 x1 V5 y" c: B% 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);
% Read current measurements at sampling instant k
3 Z2 I: q8 |- `" ^  Bik = I_meas(1) + 1j*I_meas(2);
% Back-EMF estimate
3 w8 F4 g, ~9 @: d# r0 Fe = v(x_old) - L/Ts*ik - (R - L/Ts)*i_old;
# R- s. a+ p9 C' G/ _' O$ J' T% Store the measured current for the next iteration
i_old = ik;
7 j, V/ o2 w0 E' Xfor i = 1:8
) k5 O  s0 E* D3 V. f4 T1 o    % i-th voltage vector for current prediction
    v_o1 = v(i);
5 w6 h; r3 V$ @* I* ^# ?  V& W    % Current prediction at instant k+1
    ik1 = (1 - R*Ts/L)*ik + Ts/L*(v_o1 - e);
. X9 O" p( U  Q$ V  P  b    % Cost function
    g(i) = abs(real(ik_ref - ik1)) + abs(imag(ik_ref - ik1));
end
) ]+ U( I) S+ \( ^: M( Q4 [+ k% Optimization
  K5 ^, y8 @# F1 o[~,x_opt] = min(g);
& H- g: i: e1 `3 a- P' K% Store the present value of x_opt
x_old = x_opt;
% Output switching states
, G( X2 J8 S4 {; ?/ ], xSa = states(x_opt,1);
Sb = states(x_opt,2);
0 q7 _, t4 y! `3 B' H/ dSc = states(x_opt,3);