永磁同步电机直接转矩控制入门MATLAB/Simulink完整仿真模型-含扇区判断

function [sys,x0,str,ts] = sector(t,x,u,flag) % The following outlines the general structure of an S-function. % switch flag, %判断flag，看当前处于哪个状态 %%%%%%%%%%%%%%%%%% % Initialization % %%%%%%%%%%%%%%%%%% case 0, [sys,x0,str,ts]=mdlInitializeSizes; %%%%%%%%%%% % Outputs % %%%%%%%%%%% case 3, sys=mdlOutputs(t,x,u); case {2,4,9}, sys=[]; %%%%%%%%%%%%%%%%%%%% % Unexpected flags % %%%%%%%%%%%%%%%%%%%% otherwise error(['Unhandled flag = ',num2str(flag)]); end % end sfuntmpl % %============================================================================= % mdlInitializeSizes % Return the sizes, initial conditions, and sample times for the S-function. %============================================================================= % function [sys,x0,str,ts]=mdlInitializeSizes % % call simsizes for a sizes structure, fill it in and convert it to a % sizes array. % % Note that in this example, the values are hard coded. This is not a % recommended practice as the characteristics of the block are typically % defined by the S-function parameters. % sizes = simsizes; %用于设置参数的结构体用simsizes来生成 sizes.NumContStates = 0; %连续状态变量的个数 sizes.NumDiscStates = 0; %离散状态变量的个数 sizes.NumOutputs = 1; %输出变量的个数 sizes.NumInputs = 2; %输入变量的个数 sizes.DirFeedthrough = 1; %是否存在反馈 sizes.NumSampleTimes = 1; %采样时间个数，至少是一个 sys = simsizes(sizes); %设置完后赋给sys输出 x0 = []; %状态变量设置为空，表示没有状态变量 str = []; ts = [-1 0]; %采样周期设为0表示是连续系统，-1表示采用当前的采样时间 % end mdlInitializeSizes % %============================================================================= % mdlOutputs % Return the block outputs. %============================================================================= % function sys=mdlOutputs(t,x,u) if(u(1)==0) N=1; %如果输入值为0，电压参考量在第一扇区 else a1=u(1); b1=u(1)*(-0.5)+(sqrt(3)/2)*u(2); %%根据文章的计算公式得到 c1=u(1)*(-0.5)-(sqrt(3)/2)*u(2); if a1>0 a=0; else a=1; end if b1>0 b=0; else b=1; end if c1>0 c=0; else c=1; end N=4*a+2*b+c; %扇区计算 end sys=N; % end mdlOutputs