chap3_6i.m

机器人控制仿真程序一书的所有源代码

function [sys,x0,str,ts] = spacemodel(t,x,u,flag)

switch flag,
case 0,
    [sys,x0,str,ts]=mdlInitializeSizes;
case 3,
    sys=mdlOutputs(t,x,u);
case {2,4,9}
    sys=[];
otherwise
    error(['Unhandled flag = ',num2str(flag)]);
end

function [sys,x0,str,ts]=mdlInitializeSizes
sizes = simsizes;
sizes.NumContStates  = 0;
sizes.NumDiscStates  = 0;
sizes.NumOutputs     = 1;
sizes.NumInputs      = 6;
sizes.DirFeedthrough = 1;
sizes.NumSampleTimes = 0;
sys = simsizes(sizes);
x0  = [];
str = [];
ts  = [];

function sys=mdlOutputs(t,x,u)
qd=u(1);
dqd=u(2);
ddqd=u(3);

q=u(4);
dq=u(5);

e=qd-q;
de=dqd-dq;
Hur=5;
r=de+Hur*e;

sys(1)=r;