Why Value of type "tf"is not convertible to double?
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clc;
clear all;
x0=[0 0 0 0 0 0 ];
tic
xOptSim=fminsearch(@robot,x0);
t2=toc;
function [car_sys,u1] = robot(parametry)
X1=parametry(1);
X2=parametry(2);
X3=parametry(3);
X4=parametry(4);
X5=parametry(5);
X6=parametry(6);
m = 200; %kg
b = 500; %Ns/m
k = 12500; %N/m
car_sys = tf([b k],[m b k])
t = 0:0.001:10;
wd=7;
% Respuesta a bajas frecuencias
figure
u1 = sin(wd/2*t)+cos(wd*t);
lsim(car_sys, u1, t)
title('Niska charakterystyka częstotliwościowa')
legend('Odpowiedź systemu' , 'Lokalizacja' , 'SE')
ylim([-4 4])
end
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Answers (1)
Cris LaPierre
on 23 Jan 2022
I believe the issue is because the order of your function outputs is not correct. The first output of your function needs to be the solution, u1. Try reversing the order of your output arguments.
x0=[0 0 0 0 0 0 ];
xOptSim=fminsearch(@robot,x0);
function [u1,car_sys] = robot(parametry)
X1=parametry(1);
X2=parametry(2);
X3=parametry(3);
X4=parametry(4);
X5=parametry(5);
X6=parametry(6);
m = 200; %kg
b = 500; %Ns/m
k = 12500; %N/m
car_sys = tf([b k],[m b k])
t = 0:0.001:10;
wd=7;
% Respuesta a bajas frecuencias
figure
u1 = sin(wd/2*t)+cos(wd*t);
lsim(car_sys, u1, t)
title('Niska charakterystyka częstotliwościowa')
legend('Odpowiedź systemu' , 'Lokalizacja' , 'SE')
ylim([-4 4])
end
1 Comment
Cris LaPierre
on 23 Jan 2022
The new error is because your solution vector, u1, is not the same size as x0. One thing to look into is why you are not using your X values in your function.
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