How do I use loops to model a function of displacement changing with respect to angle over time?

Question

Christian Aranas 2018-7-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/411908-how-do-i-use-loops-to-model-a-function-of-displacement-changing-with-respect-to-angle-over-time

评论： Aquatris 2018-7-25

I have been trying to model the function of displacement (as you can see here: https://i.imgur.com/s6PXKSx.png). To do this I was trying to do a loop function on MATLAB, with a step size of 1/36th of a second from 0s to 1s.

Here is my code so far:

clear all
%recorded constants
h = 60;
b = 130; 
r = 135;
w = 2*pi; % angular velocity 
i=1;
for t =0:(1/36):1 % Starts from 2s with a step size of 2 until 60s
t2(i+1) = t; %Time function to progress with 1 step intervals
x(i+1)=b*((r*sin(wt)/((h-r)*cost(wt))
i=i+1;
end

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

Aquatris 2018-7-24

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/411908-how-do-i-use-loops-to-model-a-function-of-displacement-changing-with-respect-to-angle-over-time#answer_330135

在 MATLAB Online 中打开

You have a few typos in your implementation and you do not need a for loop either. Here is the code;

h = 60;
b = 130; 
r = 135;
w = 2*pi; % angular velocity 
t =0:(1/36):1;
x = b*(r*sin(w*t))./(h-r*cos(w*t));

I recommend you insert the picture to your question next time using "image" icon, which makes it easier to answer the question.

3 个评论
显示 1更早的评论隐藏 1更早的评论

Christian Aranas 2018-7-25

Thank you so much! on another note, would matlab happen to have a time derivative function that could take the first and second derivatives of 'x' in my code?

Aquatris 2018-7-25

There is the diff() function. Here is the link to its webpage , where you should look at the example for "Approximate Derivatives with diff".

请先登录，再进行评论。

How do I use loops to model a function of displacement changing with respect to angle over time?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

采纳的回答

3 个评论
显示 1更早的评论隐藏 1更早的评论

更多回答（0 个）

另请参阅

类别

标签

Community Treasure Hunt

How do I use loops to model a function of displacement changing with respect to angle over time?

0 个评论 显示 -2更早的评论隐藏 -2更早的评论

采纳的回答

3 个评论 显示 1更早的评论隐藏 1更早的评论

更多回答（0 个）

另请参阅

类别

标签

Community Treasure Hunt

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

3 个评论
显示 1更早的评论隐藏 1更早的评论