zero output continuously in closed loop

1 次查看（过去 30 天）

manikya valli 2016-3-21

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/274663-zero-output-continuously-in-closed-loop

编辑： Geoff Hayes 2016-3-21

Hi I am getting zero output continuously in closed loop in the following simlink model. I gave step inputs of magnitude 1 at t=1 sec. The matlab function code is:

function [q_v_dot, q4_dot,w_bi_dot] = sc_dyn(q_v,q4,w_bi,tau)
I=[0.0027 0 0;0 0.0107 0;0 0 0.0101];
w_bi_dot = inv(I)*(tau - Smtrx(w_bi)*(I*w_bi));
q_v_dot =(1/2)*(q4*eye(3)+Smtrx(q_v))*w_bi;
q4_dot = -(1/2)*q_v'*w_bi;
end
function S=Smtrx(i)
S = [0 -i(3) i(2);i(3) 0 -i(1);-i(2) i(1) 0];
end