error in line1and 4

Question

firas 2023-5-11

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1961384-error-in-line1and-4

评论： Torsten 2023-5-11

Calculate the response function using the equation of motion:
omega_n = sqrt(k / m); % natural frequency
zeta = c / (2 * sqrt(m * k)); % damping ratio
omega_n = omega_n * sqrt(1 - zeta^2); % damped natural frequency
Calculate the response function using the equation of motion:
omega_n = sqrt(k / m); % natural frequency
zeta = c / (2 * sqrt(m * k)); % damping ratio
omega_d = omega_n * sqrt(1 - zeta^2); % damped natural frequency
figure;
plot(t, X);
xlabel('Time (s)');
ylabel('Displacement (m)');
title('Response of Mass-Spring-Damper System');
grid on;

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Chunru 2023-5-11

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1961384-error-in-line1and-4#answer_1232889

在 MATLAB Online 中打开

Those are comments which shoud start with %

% Calculate the response function using the equation of motion:
omega_n = sqrt(k / m); % natural frequency
Unrecognized function or variable 'k'.
zeta = c / (2 * sqrt(m * k)); % damping ratio
omega_n = omega_n * sqrt(1 - zeta^2); % damped natural frequency
% Calculate the response function using the equation of motion:
omega_n = sqrt(k / m); % natural frequency
zeta = c / (2 * sqrt(m * k)); % damping ratio
omega_d = omega_n * sqrt(1 - zeta^2); % damped natural frequency
figure;
plot(t, X);
xlabel('Time (s)');
ylabel('Displacement (m)');
title('Response of Mass-Spring-Damper System');
grid on;

2 个评论
显示无隐藏无

firas 2023-5-11

it says vakue assigned to variable might be unsured (omega_n);

omega_n = omega_n * sqrt(1 - zeta^2); % damped natural frequency

Torsten 2023-5-11

It means that you defined a variable, but you didn't use this variable in the sequel. Thus deleting the line where you defined the variable would not change anything in the results from the code - usually an indicator that you made a mistake.

请先登录，再进行评论。