【求助】问题出现了，怎么改呢？

[babyspring111]

输入输出有约束的模型预测控制器设计
问题出现在了，怎么改呢？》
请各位大侠帮忙，急￥￥￥

g11=poly2tfd(0.4,[13 1],0,53);
g12=poly2tfd(0.3,[15 1],0,41);
g13=poly2tfd(0,[0 1],0,0);
g14=poly2tfd(0,[0 1],0,0);

g21=poly2tfd(0.8,[9 1],0,24);
g22=poly2tfd(0.4,[14 1],0,31);
g23=poly2tfd(0,[0 1],0,0);
g24=poly2tfd(0,[0 1],0,0);

g31=poly2tfd(0.4,[16 1],0,47);
g32=poly2tfd(0.7,[18 1],0,37);
g33=poly2tfd(0,[0 1],0,0);
g34=poly2tfd(0,[0 1],0,0);

g41=poly2tfd(0,[0 1],0,0);
g42=poly2tfd(0.4,[15 1],0,37);
g43=poly2tfd(0.45,[18 1],0,20);
g44=poly2tfd(0,[0 1],0,0);

g51=poly2tfd(0,[0 1],0,0);
g52=poly2tfd(0,[0 1],0,0);
g53=poly2tfd(0.05,[17 1],0,54)
g54=poly2tfd(0.02,[19 1],0,50);

delt=3;
ny=2;tfinal=90
model=tfd2step(tfinal,delt,ny,g11,g12,g13,g14,g21,g22,g23,g24,g31,g32,g33,g34,g41,g42,g43,g44,g45,g51,g52,g53,g54);

====error using tfd2step
transter function must contain three rows.